move unsent I2NP messages to new session if replaced

Fixed checking the bandwidth flag in the config

.editorconfig

@@ -34,3 +34,6 @@ trim_trailing_whitespace = false
 [*.yml]
 indent_style = space
 indent_size = 2
+
+[*.patch]
+trim_trailing_whitespace = false

.github/workflows/build-deb.yml

@@ -1,6 +1,24 @@
 name: Build Debian packages
 
-on: [push, pull_request]
+on:
+  push:
+    branches:
+    - '*'
+    paths:
+    - .github/workflows/build-deb.yml
+    - contrib/**
+    - daemon/**
+    - debian/**
+    - i18n/**
+    - libi2pd/**
+    - libi2pd_client/**
+    - Makefile
+    - Makefile.linux
+    tags:
+    - '*'
+  pull_request:
+    branches:
+    - '*'
 
 jobs:
   build:
@@ -14,26 +32,30 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         fetch-depth: 0
 
+    - name: Commit Hash
+      id: commit
+      uses: prompt/actions-commit-hash@v3.0.0
+
     - name: Build package
       uses: jtdor/build-deb-action@v1
       with:
         docker-image: debian:${{ matrix.dist }}-slim
         buildpackage-opts: --build=binary --no-sign
-        before-build-hook: debchange --controlmaint --local "+${{ github.sha }}~${{ matrix.dist }}" -b --distribution ${{ matrix.dist }} "CI build"
+        before-build-hook: debchange --controlmaint --local "+${{ steps.commit.outputs.short }}~${{ matrix.dist }}" -b --distribution ${{ matrix.dist }} "CI build"
         extra-build-deps: devscripts git
 
     - name: Upload package
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: i2pd_${{ matrix.dist }}
         path: debian/artifacts/i2pd_*.deb
 
     - name: Upload debugging symbols
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: i2pd-dbgsym_${{ matrix.dist }}
         path: debian/artifacts/i2pd-dbgsym_*.deb

.github/workflows/build-freebsd.yml

@@ -1,19 +1,37 @@
 name: Build on FreeBSD
 
-on: [push, pull_request]
+on:
+  push:
+    branches:
+    - '*'
+    paths:
+    - .github/workflows/build-freebsd.yml
+    - build/CMakeLists.txt
+    - build/cmake_modules/**
+    - daemon/**
+    - i18n/**
+    - libi2pd/**
+    - libi2pd_client/**
+    - Makefile
+    - Makefile.bsd
+    tags:
+    - '*'
+  pull_request:
+    branches:
+    - '*'
 
 jobs:
   build:
-    runs-on: macos-12
+    runs-on: ubuntu-latest
     name: with UPnP
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Test in FreeBSD
       id: test
-      uses: vmactions/freebsd-vm@v0.3.0
+      uses: vmactions/freebsd-vm@v1
       with:
         usesh: true
         mem: 2048
@@ -26,7 +44,7 @@ jobs:
           gmake -j2
 
     - name: Upload artifacts
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: i2pd-freebsd
         path: build/i2pd

.github/workflows/build-osx.yml

@@ -1,6 +1,22 @@
 name: Build on OSX
 
-on: [push, pull_request]
+on:
+  push:
+    branches:
+    - '*'
+    paths:
+    - .github/workflows/build-osx.yml
+    - daemon/**
+    - i18n/**
+    - libi2pd/**
+    - libi2pd_client/**
+    - Makefile
+    - Makefile.homebrew
+    tags:
+    - '*'
+  pull_request:
+    branches:
+    - '*'
 
 jobs:
   build:
@@ -14,13 +30,16 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
-    - name: install packages
+    - name: Install required formulae
       run: |
         find /usr/local/bin -lname '*/Library/Frameworks/Python.framework/*' -delete
         brew update
         brew install boost miniupnpc openssl@1.1
 
-    - name: build application
+    - name: List installed formulae
+      run: brew list
+
+    - name: Build application
       run: make HOMEBREW=1 USE_UPNP=${{ matrix.with_upnp }} PREFIX=$GITHUB_WORKSPACE/output -j3

.github/workflows/build-windows-msvc.yml

@@ -1,52 +0,0 @@
-name: Build on Windows with MSVC
-
-on: [push, pull_request]
-
-jobs:
-  build:
-    name: Build
-    runs-on: windows-latest
-
-    strategy:
-      fail-fast: false
-
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v3
-      with:
-        fetch-depth: 0
-
-    - name: Build and install zlib
-      run: |
-        powershell -Command "(Invoke-WebRequest -Uri https://raw.githubusercontent.com/r4sas/zlib.install/master/install.bat -OutFile install_zlib.bat)"
-        powershell -Command "(Get-Content install_zlib.bat) | Set-Content install_zlib.bat" # fixing line endings
-        set BUILD_TYPE=Debug
-        ./install_zlib.bat
-        set BUILD_TYPE=Release
-        ./install_zlib.bat
-        del install_zlib.bat
-
-    - name: Install Boost
-      uses: crazy-max/ghaction-chocolatey@v2
-      with:
-        args: install boost-msvc-14.3
-
-    - name: Install OpenSSL
-      uses: crazy-max/ghaction-chocolatey@v2
-      with:
-        args: install openssl
-
-    - name: Configure
-      working-directory: build
-      run: cmake -DWITH_STATIC=ON .
-
-    - name: Build
-      working-directory: build
-      run: cmake --build . --config Debug -- -m
-
-    - name: Upload artifacts
-      uses: actions/upload-artifact@v3
-      with:
-        name: i2pd-msvc
-        path: build/Debug/i2pd.*
-

.github/workflows/build-windows-msvc.yml-disabled

@@ -0,0 +1,80 @@
+name: Build on Windows with MSVC
+
+on:
+  push:
+    branches:
+    - '*'
+    paths:
+    - .github/workflows/build-windows-msvc.yml
+    - build/CMakeLists.txt
+    - build/cmake_modules/**
+    - daemon/**
+    - i18n/**
+    - libi2pd/**
+    - libi2pd_client/**
+    - Win32/**
+    tags:
+    - '*'
+  pull_request:
+    branches:
+    - '*'
+
+jobs:
+  build:
+    name: Build
+    runs-on: windows-latest
+    env:
+      boost_path: ${{ github.workspace }}\boost_1_83_0
+      openssl_path: ${{ github.workspace }}\openssl_3_2_1
+
+    strategy:
+      fail-fast: false
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+
+    - name: Build and install zlib
+      run: |
+        powershell -Command "(Invoke-WebRequest -Uri https://raw.githubusercontent.com/r4sas/zlib.install/master/install.bat -OutFile install_zlib.bat)"
+        powershell -Command "(Get-Content install_zlib.bat) | Set-Content install_zlib.bat" # fixing line endings
+        set BUILD_TYPE=Debug
+        ./install_zlib.bat
+        set BUILD_TYPE=Release
+        ./install_zlib.bat
+        del install_zlib.bat
+
+    - name: Install Boost
+      run: |
+        powershell -Command "(Start-BitsTransfer -Source https://sourceforge.net/projects/boost/files/boost-binaries/1.83.0/boost_1_83_0-msvc-14.3-64.exe/download -Destination boost_1_83_0-msvc-14.3-64.exe)"
+        ./boost_1_83_0-msvc-14.3-64.exe /DIR="${{env.boost_path}}" /VERYSILENT /SUPPRESSMSGBOXES /SP-
+
+    - name: Install OpenSSL
+      run: |
+        powershell -Command "(Start-BitsTransfer -Source https://slproweb.com/download/Win64OpenSSL-3_2_1.exe -Destination Win64OpenSSL-3_2_1.exe)"
+        ./Win64OpenSSL-3_2_1.exe /DIR="${{env.openssl_path}}" /TASKS="copytobin" /VERYSILENT /SUPPRESSMSGBOXES /NORESTART /SP-
+
+    - name: Make copy of the OpenSSL libraries for CMake
+      run: |
+        dir ${{ github.workspace }}
+        dir ${{env.openssl_path}}\lib\VC
+        dir ${{env.openssl_path}}\lib\VC\x64\
+        dir ${{env.openssl_path}}\lib\VC\x64\MTd\
+        xcopy /s /y "${{env.openssl_path}}\lib\VC\x64\MTd" "${{env.openssl_path}}\lib"
+
+    - name: Configure
+      working-directory: build
+      run: cmake -DBoost_ROOT="${{env.boost_path}}" -DOPENSSL_ROOT_DIR="${{env.openssl_path}}" -DWITH_STATIC=ON .
+
+    - name: Build
+      working-directory: build
+      run: cmake --build . --config Debug -- -m
+
+    - name: Upload artifacts
+      uses: actions/upload-artifact@v4
+      with:
+        name: i2pd-msvc
+        path: build/Debug/i2pd.*
+

.github/workflows/build-windows.yml

@@ -1,6 +1,25 @@
 name: Build on Windows
 
-on: [push, pull_request]
+on:
+  push:
+    branches:
+    - '*'
+    paths:
+    - .github/workflows/build-windows.yml
+    - build/CMakeLists.txt
+    - build/cmake_modules/**
+    - daemon/**
+    - i18n/**
+    - libi2pd/**
+    - libi2pd_client/**
+    - Win32/**
+    - Makefile
+    - Makefile.mingw
+    tags:
+    - '*'
+  pull_request:
+    branches:
+    - '*'
 
 defaults:
   run:
@@ -23,7 +42,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         fetch-depth: 0
 
@@ -44,7 +63,7 @@ jobs:
         make USE_UPNP=yes DEBUG=no USE_GIT_VERSION=yes -j3
 
     - name: Upload artifacts
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: i2pd-${{ matrix.arch_short }}.exe
         path: i2pd.exe
@@ -65,7 +84,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         fetch-depth: 0
 
@@ -83,7 +102,7 @@ jobs:
         cmake --build . -- -j3
 
     - name: Upload artifacts
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: i2pd-cmake-${{ matrix.arch_short }}.exe
         path: build/i2pd.exe
@@ -97,7 +116,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         fetch-depth: 0
 
@@ -106,34 +125,117 @@ jobs:
       with:
         msystem: MINGW32
         install: base-devel git mingw-w64-i686-gcc mingw-w64-i686-boost mingw-w64-i686-openssl mingw-w64-i686-miniupnpc
+        cache: true
         update: true
 
-    - name: Build WinXP-capable CRT packages
+    - name: Clone MinGW packages repository
+      run: git clone https://github.com/msys2/MINGW-packages
+
+    # headers
+    - name: Get headers package version
+      id:  version-headers
+      run: |
+        echo "version=$(pacman -Si mingw-w64-i686-headers-git | grep -Po '^Version\s*: \K.+')" >> $GITHUB_OUTPUT
+    - name: Cache headers package
+      uses: actions/cache@v4
+      id: cache-headers
+      with:
+        path: MINGW-packages/mingw-w64-headers-git/*.zst
+        key: winxp-headers-${{ steps.version-headers.outputs.version }}
+    - name: Build WinXP-capable headers package
+      if: steps.cache-headers.outputs.cache-hit != 'true'
       run: |
-        git clone https://github.com/msys2/MINGW-packages
-        pushd MINGW-packages
-        pushd mingw-w64-headers-git
+        cd MINGW-packages/mingw-w64-headers-git
         sed -i 's/0x601/0x501/' PKGBUILD
-        MINGW_ARCH=mingw32 makepkg-mingw -sCLf --noconfirm
-        pacman --noconfirm -U mingw-w64-i686-headers-git-*-any.pkg.tar.zst
-        popd
-        pushd mingw-w64-crt-git
-        MINGW_ARCH=mingw32 makepkg-mingw -sCLf --noconfirm
-        pacman --noconfirm -U mingw-w64-i686-crt-git-*-any.pkg.tar.zst
-        popd
-        pushd mingw-w64-winpthreads-git
-        MINGW_ARCH=mingw32 makepkg-mingw -sCLf --noconfirm
-        pacman --noconfirm -U mingw-w64-i686-libwinpthread-git-*-any.pkg.tar.zst mingw-w64-i686-winpthreads-git-*-any.pkg.tar.zst
-        popd
-        popd
+        MINGW_ARCH=mingw32 makepkg-mingw -sCLf --noconfirm --nocheck
+    - name: Install headers package
+      run: pacman --noconfirm -U MINGW-packages/mingw-w64-headers-git/mingw-w64-i686-*-any.pkg.tar.zst
+
+    # CRT
+    - name: Get crt package version
+      id:  version-crt
+      run: |
+        echo "version=$(pacman -Si mingw-w64-i686-crt-git | grep -Po '^Version\s*: \K.+')" >> $GITHUB_OUTPUT
+    - name: Cache crt package
+      uses: actions/cache@v4
+      id: cache-crt
+      with:
+        path: MINGW-packages/mingw-w64-crt-git/*.zst
+        key: winxp-crt-${{ steps.version-crt.outputs.version }}
+    - name: Build WinXP-capable crt package
+      if: steps.cache-crt.outputs.cache-hit != 'true'
+      run: |
+        cd MINGW-packages/mingw-w64-crt-git
+        MINGW_ARCH=mingw32 makepkg-mingw -sCLf --noconfirm --nocheck
+    - name: Install crt package
+      run: pacman --noconfirm -U MINGW-packages/mingw-w64-crt-git/mingw-w64-i686-*-any.pkg.tar.zst
+
+    # winpthreads
+    - name: Get winpthreads package version
+      id:  version-winpthreads
+      run: |
+        echo "version=$(pacman -Si mingw-w64-i686-winpthreads-git | grep -Po '^Version\s*: \K.+')" >> $GITHUB_OUTPUT
+    - name: Cache winpthreads package
+      uses: actions/cache@v4
+      id: cache-winpthreads
+      with:
+        path: MINGW-packages/mingw-w64-winpthreads-git/*.zst
+        key: winxp-winpthreads-${{ steps.version-winpthreads.outputs.version }}
+    - name: Build WinXP-capable winpthreads package
+      if: steps.cache-winpthreads.outputs.cache-hit != 'true'
+      run: |
+        cd MINGW-packages/mingw-w64-winpthreads-git
+        MINGW_ARCH=mingw32 makepkg-mingw -sCLf --noconfirm --nocheck
+    - name: Install winpthreads package
+      run: pacman --noconfirm -U MINGW-packages/mingw-w64-winpthreads-git/mingw-w64-i686-*-any.pkg.tar.zst
+
+    # OpenSSL
+    - name: Get openssl package version
+      id:  version-openssl
+      run: |
+        echo "version=$(pacman -Si mingw-w64-i686-openssl | grep -Po '^Version\s*: \K.+')" >> $GITHUB_OUTPUT
+    - name: Cache openssl package
+      uses: actions/cache@v4
+      id: cache-openssl
+      with:
+        path: MINGW-packages/mingw-w64-openssl/*.zst
+        key: winxp-openssl-${{ steps.version-openssl.outputs.version }}
+    - name: Build WinXP-capable openssl package
+      if: steps.cache-openssl.outputs.cache-hit != 'true'
+      run: |
+        cd MINGW-packages/mingw-w64-openssl
+        gpg --recv-keys D894E2CE8B3D79F5
+        MINGW_ARCH=mingw32 makepkg-mingw -sCLf --noconfirm --nocheck
+    - name: Install openssl package
+      run: pacman --noconfirm -U MINGW-packages/mingw-w64-openssl/mingw-w64-i686-*-any.pkg.tar.zst
+
+    # Boost
+    - name: Get boost package version
+      id:  version-boost
+      run: |
+        echo "version=$(pacman -Si mingw-w64-i686-boost | grep -Po '^Version\s*: \K.+')" >> $GITHUB_OUTPUT
+    - name: Cache boost package
+      uses: actions/cache@v4
+      id: cache-boost
+      with:
+        path: MINGW-packages/mingw-w64-boost/*.zst
+        key: winxp-winpthreads-${{ steps.version-boost.outputs.version }}
+    - name: Build WinXP-capable boost package
+      if: steps.cache-boost.outputs.cache-hit != 'true'
+      run: |
+        cd MINGW-packages/mingw-w64-boost
+        MINGW_ARCH=mingw32 makepkg-mingw -sCLf --noconfirm --nocheck
+    - name: Install boost package
+      run: pacman --noconfirm -U MINGW-packages/mingw-w64-boost/mingw-w64-i686-*-any.pkg.tar.zst
 
+    # Building i2pd
     - name: Build application
       run: |
         mkdir -p obj/Win32 obj/libi2pd obj/libi2pd_client obj/daemon
         make USE_UPNP=yes DEBUG=no USE_GIT_VERSION=yes USE_WINXP_FLAGS=yes -j3
 
     - name: Upload artifacts
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: i2pd-xp.exe
         path: i2pd.exe

.github/workflows/build.yml

@@ -1,6 +1,24 @@
 name: Build on Ubuntu
 
-on: [push, pull_request]
+on:
+  push:
+    branches:
+    - '*'
+    paths:
+    - .github/workflows/build.yml
+    - build/CMakeLists.txt
+    - build/cmake_modules/**
+    - daemon/**
+    - i18n/**
+    - libi2pd/**
+    - libi2pd_client/**
+    - Makefile
+    - Makefile.linux
+    tags:
+    - '*'
+  pull_request:
+    branches:
+    - '*'
 
 jobs:
   build-make:
@@ -14,7 +32,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: install packages
       run: |
@@ -35,7 +53,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: install packages
       run: |

.github/workflows/docker.yml

@@ -5,6 +5,16 @@ on:
     branches:
     - openssl
     - docker
+    paths:
+    - .github/workflows/docker.yml
+    - contrib/docker/**
+    - contrib/certificates/**
+    - daemon/**
+    - i18n/**
+    - libi2pd/**
+    - libi2pd_client/**
+    - Makefile
+    - Makefile.linux
     tags:
     - '*'
 
@@ -27,29 +37,29 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Set up QEMU
-      uses: docker/setup-qemu-action@v2
+      uses: docker/setup-qemu-action@v3
 
     - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v2
+      uses: docker/setup-buildx-action@v3
 
     - name: Login to DockerHub
-      uses: docker/login-action@v2
+      uses: docker/login-action@v3
       with:
         username: ${{ secrets.DOCKERHUB_USERNAME }}
         password: ${{ secrets.DOCKERHUB_TOKEN }}
 
     - name: Login to GitHub Container registry
-      uses: docker/login-action@v2
+      uses: docker/login-action@v3
       with:
         registry: ghcr.io
         username: ${{ github.actor }}
         password: ${{ secrets.GITHUB_TOKEN }}
 
     - name: Build container for ${{ matrix.archname }}
-      uses: docker/build-push-action@v3
+      uses: docker/build-push-action@v5
       with:
         context: ./contrib/docker
         file: ./contrib/docker/Dockerfile
@@ -72,22 +82,22 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Set up QEMU
-      uses: docker/setup-qemu-action@v2
+      uses: docker/setup-qemu-action@v3
 
     - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v2
+      uses: docker/setup-buildx-action@v3
 
     - name: Login to DockerHub
-      uses: docker/login-action@v2
+      uses: docker/login-action@v3
       with:
         username: ${{ secrets.DOCKERHUB_USERNAME }}
         password: ${{ secrets.DOCKERHUB_TOKEN }}
 
     - name: Login to GitHub Container registry
-      uses: docker/login-action@v2
+      uses: docker/login-action@v3
       with:
         registry: ghcr.io
         username: ${{ github.actor }}

ChangeLog

@@ -1,6 +1,143 @@
 # for this file format description,
 # see https://github.com/olivierlacan/keep-a-changelog
 
+## [2.52.0] - 2024-05-12
+### Added
+- Separate threads for persisting RouterInfos and profiles to disk
+- Give preference to address with direct connection
+- Exclude addresses with incorrect static or intro key
+- Avoid two firewalled routers in the row in tunnel
+- Drop unsolicited database search replies
+### Changed
+- Increase number of hashes to 16 in exploratory lookup reply
+- Reduce number of a RouterInfo lookup attempts to 5
+- Reset stream RTO if outbound tunnel was changed
+- Insert previously excluded floodfill back when successfully connected
+- Increase maximum stream resend attempts to 9
+- Reply to exploratory lookups with only confirmed routers if low tunnel build rate
+- Don't accept too old RouterInfo
+- Build client tunnels through confirmed routers only if low tunnel build rate
+- Manage netDb requests more frequently
+- Don't reply with closer than us only floodfills for lookup
+### Fixed
+- Crash on router lookup if exploratory pool is not ready
+- Race condition in excluded peers for next lookup
+- Excessive number of lookups for same destination
+- Race condition with transport peers during shutdown
+- Corrupted RouterInfo files
+
+## [2.51.0] - 2024-04-06
+### Added
+- Non-blocking mode for UDP sockets
+- Set SSU2 socket buffer size based on bandwidth limit
+- Encrypted tunnel tests
+- Support for multiple UDP server tunnels on one destination
+- Publish medium congestion indication
+- Local domain sockets for SOCKS proxy upstream
+- Tunnel status "declined" in web console
+- SAM error reply "Incompatible crypto" if remote destination has incompatible crypto
+- Reduce amount of traffic by handling local message drops
+- Keep SSU2 socket open even if it fails to bind
+- Lower SSU2 resend traffic spikes
+- Expiration for messages in SSU2 send queue
+- Use EWMA for stream RTT estimation
+- Request choking delay if too many NACKs in stream
+- Allow 0ms latency for tunnel
+- Randomize tunnels selection for tests
+### Changed
+- Upstream SOCKS proxy from SOCKS4 to SOCKS5
+- Transit tunnels limit to 4 bytes. Default value to 10K
+- Reply CANT_REACH_PEER if connect to ourselves in SAM
+- Don't send already expired I2NP messages
+- Use monotonic timer to measure tunnel test latency
+- Standard NTCP2 frame doesn't exceed 16K
+- Always send request through tunnels in case of restricted routes
+- Don't delete connected routers from NetDb
+- Send lookup reply directly to reply tunnel gateway if possible
+- Reduce unreachable router ban interval to 8 minutes
+- Don't request banned routers / don't try to connect to unreachable router
+- Consider 'M' routers as low bandwidth
+- Limit minimal received SSU2 packet size to 40 bytes
+- Bob picks peer test session only if Charlie's address supports peer testing
+- Reject peer test msg 2 if peer testing is not supported
+- Don't request termination if SSU2 session was not established
+- Set maximum SSU2 queue size depending on RTT value
+- New streaming RTT calculation algorithm
+- Don't double initial RTO for streams when changing tunnels
+- Restore failed tunnel if test or data for inbound tunnel received
+- Don't fail last remaining tunnel in pool
+- Publish LeasetSet again if local destination was not ready or no tunnels
+- Make more attempts to pick high bandwidth hop for client tunnel
+- Reduced SSU2 session termination timeout to 165 seconds
+- Reseeds list
+### Fixed
+- ECIESx25519 symmetric key tagset early expiration
+- Encrypted LeaseSet lookup
+- Outbound tunnel build fails if it's endpoint is the same as reply tunnel gateway
+- I2PControl RouterManager returns invalid JSON when unknown params are passed
+- Mix of data between different UDP sessions on the same server
+- TARGET_OS_SIMULATOR check
+- Handling of "reservedrange" param
+- New NTCP2 session gets teminated upon termination of old one
+- New SSU2 session gets teminated upon termination of old one
+- Peer test to non-supporting router
+- Streaming ackThrough off 1 if number of NACKs exceeds 255
+- Race condition in ECIESx25519 tags table
+- Good tunnel becomes failed
+- Crash when packet comes to terminated stream
+- Stream hangs during LeaseSet update
+
+## [2.50.2] - 2024-01-06
+###Fixed
+- Crash with OpenSSL 3.2.0
+- False positive clock skew detection
+
+## [2.50.1] - 2023-12-23
+###Fixed
+- Support for new EdDSA usage behavior in OpenSSL 3.2.0
+
+## [2.50.0] - 2023-12-18
+### Added
+- Support of concurrent ACCEPTs on SAM 3.1
+- Haiku OS support
+- Low bandwidth and far routers can expire before 1 hour
+### Changed
+- Don't pick too active peer for first hop
+- Try peer test again if status is Unknown
+- Send peer tests with random delay
+- Reseeds list
+### Fixed
+- XSS vulnerability in addresshelper
+- Publishing NAT64 ipv6 addresses
+- Deadlock in AsyncSend callback
+
+## [2.49.0] - 2023-09-18
+### Added
+- Handle SOCK5 authorization with empty user/password
+- Drop incoming transport sessions from too old or from future routers
+- Memory pool for router profiles
+- Allow 0 hops in explicitPeers
+### Changed
+- Separate network and testing status
+- Remove AVX code
+- Improve NTCP2 transport session logging
+- Select router with ipv4 for tunnel endpoint
+- Consider all addresses non-published for U and H routers even if they have host/port
+- Don't pick completely unreachable routers for tunnels
+- Exclude SSU1 introducers from SSU2 addresses
+- Don't create paired inbound tunnel if length is different
+- Remove introducer from RouterInfo after 60 minutes
+- Reduce SSU2 keep alive interval and add keep alive interval variance
+- Don't pick too old sessions for introducer
+### Fixed
+- Version of the subnegotiation in user/password SOCKS5 response
+- Send keepalive for existing session with introducer
+- Buffer offset for EVP_EncryptFinal_ex() to include outlen
+- Termination block size processing for transport sessions
+- Crash if deleted BOB destination was shared between few BOB sessions
+- Introducers with zero tag
+- Padding for SSU2 path response
+
 ## [2.48.0] - 2023-06-12
 ### Added
 - Allow user/password authentication method for SOCK5 proxy

Makefile

@@ -67,6 +67,9 @@ else ifneq (, $(findstring linux, $(SYS))$(findstring gnu, $(SYS)))
 else ifneq (, $(findstring freebsd, $(SYS))$(findstring openbsd, $(SYS)))
 	DAEMON_SRC += $(DAEMON_SRC_DIR)/UnixDaemon.cpp
 	include Makefile.bsd
+else ifneq (, $(findstring haiku, $(SYS)))
+	DAEMON_SRC += $(DAEMON_SRC_DIR)/UnixDaemon.cpp
+	include Makefile.haiku
 else # not supported
 	$(error Not supported platform)
 endif
@@ -118,7 +121,7 @@ obj/%.o: %.cpp | mk_obj_dir
 -include $(DEPS)
 
 $(I2PD): $(DAEMON_OBJS) $(ARLIB) $(ARLIB_CLIENT) $(ARLIB_LANG)
-	$(CXX) -o $@ $(DEFINES) $(LDFLAGS) $^ $(LDLIBS)
+	$(CXX) $(DEFINES) $(LDFLAGS) -o $@ $^ $(LDLIBS)
 
 $(SHLIB): $(LIB_OBJS)
 ifneq ($(USE_STATIC),yes)

Makefile.bsd

@@ -6,7 +6,12 @@ CXXFLAGS ?= ${CXX_DEBUG} -Wall -Wextra -Wno-unused-parameter -pedantic -Wno-misl
 ## (e.g. -fstack-protector-strong -Wformat -Werror=format-security), we do not want to remove
 ## -std=c++11. If you want to remove this variable please do so in a way that allows setting
 ## custom FLAGS to work at build-time.
-NEEDED_CXXFLAGS = -std=c++11
+CXXVER := $(shell $(CXX) -dumpversion)
+ifeq (${CXXVER}, "4.2.1") # older clang always returned 4.2.1
+	NEEDED_CXXFLAGS = -std=c++11
+else # newer versions support C++17
+	NEEDED_CXXFLAGS = -std=c++17
+endif
 DEFINES = -D_GLIBCXX_USE_NANOSLEEP=1
 INCFLAGS = -I/usr/include/ -I/usr/local/include/
 LDFLAGS = ${LD_DEBUG} -Wl,-rpath,/usr/local/lib -L/usr/local/lib

Makefile.haiku

@@ -0,0 +1,10 @@
+CXX = g++
+CXXFLAGS := -Wall -std=c++11
+INCFLAGS = -I/system/develop/headers
+DEFINES = -D_DEFAULT_SOURCE -D_GNU_SOURCE
+LDLIBS = -lbe -lbsd -lnetwork -lz -lcrypto -lssl -lboost_system -lboost_date_time -lboost_filesystem -lboost_program_options -lpthread
+
+ifeq ($(USE_UPNP),yes)
+	DEFINES += -DUSE_UPNP
+	LDLIBS += -lminiupnpc
+endif

Makefile.homebrew

@@ -1,41 +1,40 @@
 # root directory holding homebrew
-BREWROOT = /usr/local
+BREWROOT = /opt/homebrew
 BOOSTROOT = ${BREWROOT}/opt/boost
 SSLROOT = ${BREWROOT}/opt/openssl@1.1
 UPNPROOT = ${BREWROOT}/opt/miniupnpc
-CXXFLAGS = ${CXX_DEBUG} -Wall -std=c++11 -DMAC_OSX -Wno-overloaded-virtual
-INCFLAGS = -I${SSLROOT}/include -I${BOOSTROOT}/include
-LDFLAGS = ${LD_DEBUG}
 
-ifndef TRAVIS
-	CXX = clang++
-endif
+CXXFLAGS ?= ${CXX_DEBUG} -Wall -Wno-overloaded-virtual
+NEEDED_CXXFLAGS ?= -std=c++11
+INCFLAGS ?= -I${SSLROOT}/include -I${BOOSTROOT}/include
+LDFLAGS ?= ${LD_DEBUG}
+DEFINES += -DMAC_OSX
 
 ifeq ($(USE_STATIC),yes)
-	LDLIBS = -lz ${SSLROOT}/lib/libcrypto.a ${SSLROOT}/lib/libssl.a ${BOOSTROOT}/lib/libboost_system.a ${BOOSTROOT}/lib/libboost_date_time.a ${BOOSTROOT}/lib/libboost_filesystem.a ${BOOSTROOT}/lib/libboost_program_options.a -lpthread
+	LDLIBS = -lz ${SSLROOT}/lib/libcrypto.a ${SSLROOT}/lib/libssl.a ${BOOSTROOT}/lib/libboost_system.a ${BOOSTROOT}/lib/libboost_date_time.a ${BOOSTROOT}/lib/libboost_filesystem.a ${BOOSTROOT}/lib/libboost_program_options.a
+ifeq ($(USE_UPNP),yes)
+	LDLIBS += ${UPNPROOT}/lib/libminiupnpc.a
+endif
+	LDLIBS +=  -lpthread -ldl
 else
 	LDFLAGS += -L${SSLROOT}/lib -L${BOOSTROOT}/lib
 	LDLIBS = -lz -lcrypto -lssl -lboost_system -lboost_date_time -lboost_filesystem -lboost_program_options -lpthread
+ifeq ($(USE_UPNP),yes)
+	LDFLAGS += -L${UPNPROOT}/lib
+	LDLIBS += -lminiupnpc
+endif
 endif
 
 ifeq ($(USE_UPNP),yes)
-	LDFLAGS += -ldl
-	CXXFLAGS += -DUSE_UPNP
+	DEFINES += -DUSE_UPNP
 	INCFLAGS += -I${UPNPROOT}/include
-	ifeq ($(USE_STATIC),yes)
-		LDLIBS += ${UPNPROOT}/lib/libminiupnpc.a
-	else
-		LDFLAGS += -L${UPNPROOT}/lib
-		LDLIBS += -lminiupnpc
-	endif
 endif
 
-# OSX Notes
-# http://www.hutsby.net/2011/08/macs-with-aes-ni.html
-# Seems like all recent Mac's have AES-NI, after firmware upgrade 2.2
-# Found no good way to detect it from command line. TODO: Might be some osx sysinfo magic
 ifeq ($(USE_AESNI),yes)
-	CXXFLAGS += -D__AES__ -maes
+ifneq (, $(findstring i386, $(SYS))$(findstring i686, $(SYS))$(findstring x86_64, $(SYS))) # only x86-based CPU supports that
+	NEEDED_CXXFLAGS += -maes
+	DEFINES += -D__AES__
+endif
 endif
 
 install: all

Makefile.mingw

@@ -5,14 +5,11 @@ WINDRES = windres
 
 CXXFLAGS := $(CXX_DEBUG) -fPIC -msse
 INCFLAGS := -I$(DAEMON_SRC_DIR) -IWin32
-LDFLAGS := ${LD_DEBUG} -static
+LDFLAGS := ${LD_DEBUG} -static -fPIC -msse
 
 NEEDED_CXXFLAGS += -std=c++17
 DEFINES += -DWIN32_LEAN_AND_MEAN
 
-# Boost libraries suffix
-BOOST_SUFFIX = -mt
-
 # UPNP Support
 ifeq ($(USE_UPNP),yes)
 	DEFINES += -DUSE_UPNP -DMINIUPNP_STATICLIB
@@ -20,17 +17,18 @@ ifeq ($(USE_UPNP),yes)
 endif
 
 LDLIBS += \
-	-lboost_system$(BOOST_SUFFIX) \
-	-lboost_date_time$(BOOST_SUFFIX) \
-	-lboost_filesystem$(BOOST_SUFFIX) \
-	-lboost_program_options$(BOOST_SUFFIX) \
-	-lssl \
-	-lcrypto \
-	-lz \
+	$(MINGW_PREFIX)/lib/libboost_system-mt.a \
+	$(MINGW_PREFIX)/lib/libboost_date_time-mt.a \
+	$(MINGW_PREFIX)/lib/libboost_filesystem-mt.a \
+	$(MINGW_PREFIX)/lib/libboost_program_options-mt.a \
+	$(MINGW_PREFIX)/lib/libssl.a \
+	$(MINGW_PREFIX)/lib/libcrypto.a \
+	$(MINGW_PREFIX)/lib/libz.a \
 	-lwsock32 \
 	-lws2_32 \
-	-lgdi32 \
 	-liphlpapi \
+	-lcrypt32 \
+	-lgdi32 \
 	-lole32 \
 	-luuid \
 	-lpthread
@@ -48,6 +46,7 @@ endif
 
 ifeq ($(USE_AESNI),yes)
 	NEEDED_CXXFLAGS += -maes
+	LDFLAGS += -maes
 	DEFINES += -D__AES__
 endif
 

Makefile.osx

@@ -5,7 +5,6 @@ DEFINES := -DMAC_OSX
 LDFLAGS := -Wl,-rpath,/usr/local/lib -L/usr/local/lib
 LDFLAGS += -Wl,-dead_strip
 LDFLAGS += -Wl,-dead_strip_dylibs
-LDFLAGS += -Wl,-bind_at_load
 
 ifeq ($(USE_STATIC),yes)
 	LDLIBS = -lz /usr/local/lib/libcrypto.a /usr/local/lib/libssl.a /usr/local/lib/libboost_system.a /usr/local/lib/libboost_date_time.a /usr/local/lib/libboost_filesystem.a /usr/local/lib/libboost_program_options.a -lpthread

README.md

@@ -99,13 +99,23 @@ Current status: [![Crowdin](https://badges.crowdin.net/i2pd/localized.svg)](http
 Donations
 ---------
 
-BTC: 3MDoGJW9TLMTCDGrR9bLgWXfm6sjmgy86f  
-LTC: LKQirrYrDeTuAPnpYq5y7LVKtywfkkHi59  
-ETH: 0x9e5bac70d20d1079ceaa111127f4fb3bccce379d  
-DASH: Xw8YUrQpYzP9tZBmbjqxS3M97Q7v3vJKUF  
-ZEC: t1cTckLuXsr1dwVrK4NDzfhehss4NvMadAJ  
-GST: GbD2JSQHBHCKLa9WTHmigJRpyFgmBj4woG  
-XMR: 497pJc7X4xqKvcLBLpSUtRgWqMMyo24u4btCos3cak6gbMkpobgSU6492ztUcUBghyeHpYeczB55s38NpuHoH5WGNSPDRMH  
+**E-Mail**: ```i2porignal at yandex.com```
+
+**BTC**: ```3MDoGJW9TLMTCDGrR9bLgWXfm6sjmgy86f```
+
+**LTC**: ```LKQirrYrDeTuAPnpYq5y7LVKtywfkkHi59```
+
+**ETH**: ```0x9e5bac70d20d1079ceaa111127f4fb3bccce379d```
+
+**GST**: ```GbD2JSQHBHCKLa9WTHmigJRpyFgmBj4woG```
+
+**DASH**: ```Xw8YUrQpYzP9tZBmbjqxS3M97Q7v3vJKUF```
+
+**ZEC**: ```t1cTckLuXsr1dwVrK4NDzfhehss4NvMadAJ```
+
+**ANC**: ```AQJYweYYUqM1nVfLqfoSMpUMfzxvS4Xd7z```
+
+**XMR**: ```497pJc7X4xqKvcLBLpSUtRgWqMMyo24u4btCos3cak6gbMkpobgSU6492ztUcUBghyeHpYeczB55s38NpuHoH5WGNSPDRMH```
 
 License
 -------

Win32/Win32App.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2022, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -145,30 +145,37 @@ namespace win32
 		s << bytes << " Bytes\n";
 	}
 
-	static void ShowNetworkStatus (std::stringstream& s, RouterStatus status)
+	static void ShowNetworkStatus (std::stringstream& s, RouterStatus status, bool testing, RouterError error)
 	{
 		switch (status)
 		{
 			case eRouterStatusOK: s << "OK"; break;
-			case eRouterStatusTesting: s << "Test"; break;
 			case eRouterStatusFirewalled: s << "FW"; break;
 			case eRouterStatusUnknown: s << "Unk"; break;
 			case eRouterStatusProxy: s << "Proxy"; break;
 			case eRouterStatusMesh: s << "Mesh"; break;
 			default: s << "Unk";
 		};
-		if (i2p::context.GetError () != eRouterErrorNone)
+		if (testing)
+			s << " (Test)";
+		if (error != eRouterErrorNone)
 		{
-			switch (i2p::context.GetError ())
+			switch (error)
 			{
 				case eRouterErrorClockSkew:
-					s << " - Clock skew";
+					s << " - " << tr("Clock skew");
 				break;
 				case eRouterErrorOffline:
-					s << " - Offline";
+					s << " - " << tr("Offline");
 				break;
 				case eRouterErrorSymmetricNAT:
-					s << " - Symmetric NAT";
+					s << " - " << tr("Symmetric NAT");
+				break;
+				case eRouterErrorFullConeNAT:
+					s << " - " << tr("Full cone NAT");
+				break;
+				case eRouterErrorNoDescriptors:
+					s << " - " << tr("No Descriptors");
 				break;
 				default: ;
 			}
@@ -179,11 +186,11 @@ namespace win32
 	{
 		s << "\n";
 		s << "Status: ";
-		ShowNetworkStatus (s, i2p::context.GetStatus ());
+		ShowNetworkStatus (s, i2p::context.GetStatus (), i2p::context.GetTesting(), i2p::context.GetError ());
 		if (i2p::context.SupportsV6 ())
 		{
 			s << " / ";
-			ShowNetworkStatus (s, i2p::context.GetStatusV6 ());
+			ShowNetworkStatus (s, i2p::context.GetStatusV6 (), i2p::context.GetTestingV6(), i2p::context.GetErrorV6 ());
 		}
 		s << "; ";
 		s << "Success Rate: " << i2p::tunnel::tunnels.GetTunnelCreationSuccessRate() << "%\n";

Win32/Win32NetState.cpp

@@ -73,16 +73,24 @@ void UnSubscribeFromEvents()
 		}
 
 		if (pNetEvent)
+		{
 			pNetEvent->Release();
+		}
 
 		if (pCPContainer)
+		{
 			pCPContainer->Release();
+		}
 
 		if (pNetworkListManager)
+		{
 			pNetworkListManager->Release();
+		}
 
 		if (pUnknown)
+		{
 			pUnknown->Release();
+		}
 
 		CoUninitialize();
 	}

Win32/Win32NetState.h

@@ -15,10 +15,11 @@
 #include "Log.h"
 #include "Transports.h"
 
-class CNetworkListManagerEvent : public INetworkListManagerEvents
+class CNetworkListManagerEvent final : public INetworkListManagerEvents
 {
 public:
 	CNetworkListManagerEvent() : m_ref(1) { }
+	~CNetworkListManagerEvent() { }
 
 	HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void **ppvObject)
 	{

build/CMakeLists.txt

@@ -25,7 +25,7 @@ project(
   i2pd
   VERSION ${PROJECT_VERSION}
   HOMEPAGE_URL "https://i2pd.website/"
-  LANGUAGES CXX
+  LANGUAGES C CXX
 )
 
 # configurable options
@@ -121,7 +121,7 @@ if(WIN32)
   )
 
   file(GLOB WIN32_RC ${WIN32_SRC_DIR}/*.rc)
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DWIN32_APP -DWIN32_LEAN_AND_MEAN")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DWIN32_APP -DWIN32_LEAN_AND_MEAN -DNOMINMAX")
 
 endif()
 
@@ -139,6 +139,10 @@ if(APPLE)
   add_definitions(-DMAC_OSX)
 endif()
 
+if(HAIKU)
+  add_definitions(-D_DEFAULT_SOURCE -D_GNU_SOURCE)
+endif()
+
 if(MSVC)
   add_definitions(-DWINVER=0x0600)
   add_definitions(-D_WIN32_WINNT=0x0600)
@@ -197,14 +201,11 @@ endif()
 
 # Note: AES-NI and AVX is available on x86-based CPU's.
 # Here also ARM64 implementation, but currently we don't support it.
-# MSVC is not supported.
-if(MSVC)
-  message(STATUS "AES-NI is not supported on MSVC, option was disabled")
-  set(WITH_AESNI OFF)
-endif()
-
+# MSVC is not supported due to different ASM processing, so we hope OpenSSL has its own checks to run optimized code.
 if(WITH_AESNI AND (ARCHITECTURE MATCHES "x86_64" OR ARCHITECTURE MATCHES "i386"))
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -maes")
+  if(NOT MSVC)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -maes")
+  endif()
   add_definitions(-D__AES__)
 endif()
 

contrib/apparmor/docker-i2pd

@@ -0,0 +1,42 @@
+# _________________________________________
+# /  Copy this file to the right location   \
+# | then load with:                         |
+# |                                         |
+# | apparmor_parser -r -W                   |
+# | /etc/apparmor.d/docker-i2pd             |
+# |                                         |
+# | docker run --security-opt               |
+# | "apparmor=docker-i2pd" ...              |
+# | purplei2p/i2pd                          |
+# |                                         |
+# \ And "aa-status" to verify it's loaded.  /
+#  -----------------------------------------
+#         \   ^__^
+#          \  (oo)\_______
+#             (__)\       )\/\
+#                 ||----w |
+#                 ||     ||
+
+#include <tunables/global>
+
+profile docker-i2pd flags=(attach_disconnected,mediate_deleted) {
+  #include <abstractions/base>
+  #include <abstractions/openssl>
+  #include <abstractions/nameservice>
+
+  /bin/busybox ix,
+  /usr/local/bin/i2pd ix,
+  /entrypoint.sh ixr,
+
+  /i2pd_certificates/** r,
+
+  /home/i2pd/data/** rw,
+
+  /home/i2pd/data/i2pd.pid k,
+
+  deny /home/i2pd/data/i2pd.conf w,
+  deny /home/i2pd/data/tunnels.conf w,
+  deny /home/i2pd/data/tunnels.d/** w,
+  deny /home/i2pd/data/certificates/** w,
+  deny /home/i2pd/data/i2pd.log r,
+}

contrib/certificates/reseed/admin_at_stormycloud.org.crt

@@ -0,0 +1,34 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----

contrib/certificates/reseed/ls_at_mail.i2p.crt

@@ -0,0 +1,32 @@
+-----BEGIN CERTIFICATE-----
+MIIFdTCCA12gAwIBAgIEQ5vCxzANBgkqhkiG9w0BAQ0FADBrMQswCQYDVQQGEwJY
+WDELMAkGA1UECAwCWFgxCzAJBgNVBAcMAlhYMR4wHAYDVQQKDBVJMlAgQW5vbnlt
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+hOLi+eDSXw+HlwHlWFlT1XOKxSTJ/F3Bv40gxqZVC2pbxiPOeRZHQ6Ojw75lxTSF
+gww2WzgztiWt4X9BO1yepnVqhAVRPmTfGUMfKzq9jkMzZKeQFV4uZSP9nCqzEpYd
+WNDUfpTWiAQ9F+BwFXGusXXA3tGVwS7s6IEoiJFM5fsoJYfRoWGh3/1eirhBXW7U
+M6oubMSTADyrvfjLfJBMmMnc2hNblRlKr0ZKUjMfv8cnyT4kQxlXLAHHXY2P89TM
+TEVODkU48gnv6tC4t1JCb1/Da+3yVMjNX6rCzQfUwnLFrWthrwiI0NivAKFtiZjq
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+dTJRcbfKG1RTr3UjFISaTwL8qigMIkVXIzcpnr/R/sSeEs8xCqfsJ6rb4dCyFx+M
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+KBLIoGdGoVfylmnc+e8zAXe+DY41fgniHMISOO78P8Bx9vTB+rhqnOUr9MzlUxPB
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+byPom10ueKONRb36t7ai79l2SEUZRSMkx6AXIU0JJ1SMtQtav7b5LkpYJfdL7+vO
+dDx2/Za0VmdD
+-----END CERTIFICATE-----

contrib/debian/README

@@ -1,2 +1,5 @@
-This forder contain systemd unit files.
-To use systemd daemon control, place files from this directory to debian folder before building package.
+This forder contain files required for building debian packages.
+
+The trunk repository is contains the packaging files for the latest stable version of Debian (if we not forgot to update them).
+
+Files in subdirectories contains fixes to make possible to build package on specific versions of Debian/Ubuntu. They are used when building the release package.

contrib/debian/bionic/compat

@@ -0,0 +1 @@
+11

contrib/debian/bionic/control

@@ -0,0 +1,18 @@
+Source: i2pd
+Section: net
+Priority: optional
+Maintainer: r4sas <r4sas@i2pmail.org>
+Build-Depends: debhelper (>= 11~), libboost-system-dev (>= 1.46), libboost-date-time-dev (>= 1.46), libboost-filesystem-dev (>= 1.46), libboost-program-options-dev (>= 1.46), libminiupnpc-dev, libssl-dev, zlib1g-dev
+Standards-Version: 4.2.0
+Homepage: http://i2pd.website/
+Vcs-Git: git://github.com/PurpleI2P/i2pd.git
+Vcs-Browser: https://github.com/PurpleI2P/i2pd
+
+Package: i2pd
+Architecture: any
+Pre-Depends: ${misc:Pre-Depends}, adduser
+Depends: ${shlibs:Depends}, ${misc:Depends}, lsb-base,
+Description: Full-featured C++ implementation of I2P client.
+ I2P (Invisible Internet Protocol) is a universal anonymous network layer. All
+ communications over I2P are anonymous and end-to-end encrypted, participants
+ don't reveal their real IP addresses.

contrib/debian/trusty/compat

@@ -0,0 +1 @@
+9

contrib/debian/trusty/control

@@ -0,0 +1,18 @@
+Source: i2pd
+Section: net
+Priority: optional
+Maintainer: r4sas <r4sas@i2pmail.org>
+Build-Depends: debhelper (>= 9), libboost-system-dev (>= 1.46), libboost-date-time-dev (>= 1.46), libboost-filesystem-dev (>= 1.46), libboost-program-options-dev (>= 1.46), libminiupnpc-dev, libssl-dev, zlib1g-dev
+Standards-Version: 3.9.8
+Homepage: http://i2pd.website/
+Vcs-Git: git://github.com/PurpleI2P/i2pd.git
+Vcs-Browser: https://github.com/PurpleI2P/i2pd
+
+Package: i2pd
+Architecture: any
+Pre-Depends: ${misc:Pre-Depends}, adduser
+Depends: ${shlibs:Depends}, ${misc:Depends}, lsb-base,
+Description: Full-featured C++ implementation of I2P client.
+ I2P (Invisible Internet Protocol) is a universal anonymous network layer. All
+ communications over I2P are anonymous and end-to-end encrypted, participants
+ don't reveal their real IP addresses.

contrib/debian/trusty/patches/01-upnp.patch

@@ -0,0 +1,17 @@
+Description: Enable UPnP usage in package
+Author: r4sas <r4sas@i2pmail.org>
+
+Reviewed-By: r4sas <r4sas@i2pmail.org>
+Last-Update: 2022-03-23
+
+--- i2pd.orig/Makefile
++++ i2pd/Makefile
+@@ -31,7 +31,7 @@ include filelist.mk
+ 
+ USE_AESNI       := $(or $(USE_AESNI),yes)
+ USE_STATIC      := $(or $(USE_STATIC),no)
+-USE_UPNP        := $(or $(USE_UPNP),no)
++USE_UPNP        := $(or $(USE_UPNP),yes)
+ DEBUG           := $(or $(DEBUG),yes)
+ 
+ # for debugging purposes only, when commit hash needed in trunk builds in i2pd version string

contrib/debian/trusty/patches/02-service.patch

@@ -0,0 +1,19 @@
+Description: Disable LogsDirectory and LogsDirectoryMode options in service
+Author: r4sas <r4sas@i2pmail.org>
+
+Reviewed-By: r4sas <r4sas@i2pmail.org>
+Last-Update: 2023-05-17
+
+--- a/contrib/i2pd.service
++++ b/contrib/i2pd.service
+@@ -8,8 +8,8 @@ User=i2pd
+ Group=i2pd
+ RuntimeDirectory=i2pd
+ RuntimeDirectoryMode=0700
+-LogsDirectory=i2pd
+-LogsDirectoryMode=0700
++#LogsDirectory=i2pd
++#LogsDirectoryMode=0700
+ Type=forking
+ ExecStart=/usr/sbin/i2pd --conf=/etc/i2pd/i2pd.conf --tunconf=/etc/i2pd/tunnels.conf --tunnelsdir=/etc/i2pd/tunnels.conf.d --pidfile=/run/i2pd/i2pd.pid --logfile=/var/log/i2pd/i2pd.log --daemon --service
+ ExecReload=/bin/sh -c "kill -HUP $MAINPID"

contrib/debian/trusty/patches/series

@@ -0,0 +1,2 @@
+01-upnp.patch
+02-service.patch

contrib/debian/trusty/rules

@@ -0,0 +1,18 @@
+#!/usr/bin/make -f
+#export DH_VERBOSE=1
+
+export DEB_BUILD_MAINT_OPTIONS=hardening=+all
+
+include /usr/share/dpkg/architecture.mk
+
+ifeq ($(DEB_HOST_ARCH),i386)
+    export DEB_BUILD_OPTIONS=parallel=1
+endif
+
+export DEB_CXXFLAGS_MAINT_APPEND=-Wall -pedantic
+export DEB_LDFLAGS_MAINT_APPEND=
+
+%:
+	dh $@ --parallel
+
+override_dh_auto_install:

contrib/debian/xenial/compat

@@ -0,0 +1 @@
+9

contrib/debian/xenial/control

@@ -0,0 +1,18 @@
+Source: i2pd
+Section: net
+Priority: optional
+Maintainer: r4sas <r4sas@i2pmail.org>
+Build-Depends: debhelper (>= 9), libboost-system-dev (>= 1.46), libboost-date-time-dev (>= 1.46), libboost-filesystem-dev (>= 1.46), libboost-program-options-dev (>= 1.46), libminiupnpc-dev, libssl-dev, zlib1g-dev
+Standards-Version: 3.9.8
+Homepage: http://i2pd.website/
+Vcs-Git: git://github.com/PurpleI2P/i2pd.git
+Vcs-Browser: https://github.com/PurpleI2P/i2pd
+
+Package: i2pd
+Architecture: any
+Pre-Depends: ${misc:Pre-Depends}, adduser
+Depends: ${shlibs:Depends}, ${misc:Depends}, lsb-base,
+Description: Full-featured C++ implementation of I2P client.
+ I2P (Invisible Internet Protocol) is a universal anonymous network layer. All
+ communications over I2P are anonymous and end-to-end encrypted, participants
+ don't reveal their real IP addresses.

contrib/debian/xenial/patches/01-upnp.patch

@@ -0,0 +1,17 @@
+Description: Enable UPnP usage in package
+Author: r4sas <r4sas@i2pmail.org>
+
+Reviewed-By: r4sas <r4sas@i2pmail.org>
+Last-Update: 2022-03-23
+
+--- i2pd.orig/Makefile
++++ i2pd/Makefile
+@@ -31,7 +31,7 @@ include filelist.mk
+ 
+ USE_AESNI       := $(or $(USE_AESNI),yes)
+ USE_STATIC      := $(or $(USE_STATIC),no)
+-USE_UPNP        := $(or $(USE_UPNP),no)
++USE_UPNP        := $(or $(USE_UPNP),yes)
+ DEBUG           := $(or $(DEBUG),yes)
+ 
+ # for debugging purposes only, when commit hash needed in trunk builds in i2pd version string

contrib/debian/xenial/patches/02-service.patch

@@ -0,0 +1,19 @@
+Description: Disable LogsDirectory and LogsDirectoryMode options in service
+Author: r4sas <r4sas@i2pmail.org>
+
+Reviewed-By: r4sas <r4sas@i2pmail.org>
+Last-Update: 2023-05-17
+
+--- a/contrib/i2pd.service
++++ b/contrib/i2pd.service
+@@ -8,8 +8,8 @@ User=i2pd
+ Group=i2pd
+ RuntimeDirectory=i2pd
+ RuntimeDirectoryMode=0700
+-LogsDirectory=i2pd
+-LogsDirectoryMode=0700
++#LogsDirectory=i2pd
++#LogsDirectoryMode=0700
+ Type=forking
+ ExecStart=/usr/sbin/i2pd --conf=/etc/i2pd/i2pd.conf --tunconf=/etc/i2pd/tunnels.conf --tunnelsdir=/etc/i2pd/tunnels.conf.d --pidfile=/run/i2pd/i2pd.pid --logfile=/var/log/i2pd/i2pd.log --daemon --service
+ ExecReload=/bin/sh -c "kill -HUP $MAINPID"

contrib/debian/xenial/patches/series

@@ -0,0 +1,2 @@
+01-upnp.patch
+02-service.patch

contrib/debian/xenial/rules

@@ -0,0 +1,13 @@
+#!/usr/bin/make -f
+#export DH_VERBOSE=1
+export DEB_BUILD_MAINT_OPTIONS = hardening=+all
+
+include /usr/share/dpkg/architecture.mk
+
+export DEB_CXXFLAGS_MAINT_APPEND  = -Wall -pedantic
+export DEB_LDFLAGS_MAINT_APPEND =
+
+%:
+	dh $@ --parallel
+
+override_dh_auto_install:

contrib/i2pd.conf

@@ -225,7 +225,7 @@ verify = true
 ## Default: "mainline" I2P Network reseeds
 # urls = https://reseed.i2p-projekt.de/,https://i2p.mooo.com/netDb/,https://netdb.i2p2.no/
 ## Reseed URLs through the Yggdrasil, separated by comma
-# yggurls = http://[324:9de3:fea4:f6ac::ace]:7070/
+# yggurls = http://[324:71e:281a:9ed3::ace]:7070/
 ## Path to local reseed data file (.su3) for manual reseeding
 # file = /path/to/i2pseeds.su3
 ## or HTTPS URL to reseed from
@@ -280,8 +280,6 @@ verify = true
 [cpuext]
 ## Use CPU AES-NI instructions set when work with cryptography when available (default: true)
 # aesni = true
-## Use CPU AVX instructions set when work with cryptography when available (default: true)
-# avx = true
 ## Force usage of CPU instructions set, even if they not found (default: false)
 ## DO NOT TOUCH that option if you really don't know what are you doing!
 # force = false

contrib/rpm/i2pd-git.spec

@@ -1,7 +1,7 @@
 %define git_hash %(git rev-parse HEAD | cut -c -7)
 
 Name:          i2pd-git
-Version:       2.48.0
+Version:       2.52.0
 Release:       git%{git_hash}%{?dist}
 Summary:       I2P router written in C++
 Conflicts:     i2pd
@@ -28,9 +28,11 @@ Requires:      logrotate
 Requires:      systemd
 Requires(pre): %{_sbindir}/useradd %{_sbindir}/groupadd
 
+
 %description
 C++ implementation of I2P.
 
+
 %prep
 %setup -q -n i2pd-openssl
 
@@ -38,72 +40,56 @@ C++ implementation of I2P.
 %build
 cd build
 %if 0%{?rhel} == 7
-%cmake3 \
+  %cmake3 \
     -DWITH_LIBRARY=OFF \
     -DWITH_UPNP=ON \
     -DWITH_HARDENING=ON \
     -DBUILD_SHARED_LIBS:BOOL=OFF
 %else
-%cmake \
+  %cmake \
     -DWITH_LIBRARY=OFF \
     -DWITH_UPNP=ON \
     -DWITH_HARDENING=ON \
-%if 0%{?fedora} > 29
+  %if 0%{?fedora} > 29
     -DBUILD_SHARED_LIBS:BOOL=OFF \
     .
-%else
+  %else
     -DBUILD_SHARED_LIBS:BOOL=OFF
-%endif
-%endif
-
-
-%if 0%{?rhel} == 9
-pushd redhat-linux-build
+  %endif
 %endif
 
-%if 0%{?fedora} >= 35
-pushd redhat-linux-build
+%if 0%{?rhel} == 9 || 0%{?fedora} >= 35 || 0%{?eln}
+  pushd redhat-linux-build
 %else
-%if 0%{?fedora} >= 33
-pushd %{_target_platform}
-%endif
-%endif
+  %if 0%{?fedora} >= 33
+    pushd %{_target_platform}
+  %endif
 
-%if 0%{?mageia} > 7
-pushd build
+  %if 0%{?mageia} > 7
+    pushd build
+  %endif
 %endif
 
 make %{?_smp_mflags}
 
-%if 0%{?rhel} == 9
-popd
-%endif
-
-%if 0%{?fedora} >= 33
-popd
+%if 0%{?rhel} == 9 || 0%{?fedora} >= 33 || 0%{?mageia} > 7
+  popd
 %endif
 
-%if 0%{?mageia} > 7
-popd
-%endif
 
 %install
 pushd build
 
-%if 0%{?rhel} == 9
-pushd redhat-linux-build
-%endif
-
-%if 0%{?fedora} >= 35
-pushd redhat-linux-build
+%if 0%{?rhel} == 9 || 0%{?fedora} >= 35 || 0%{?eln}
+  pushd redhat-linux-build
 %else
-%if 0%{?fedora} >= 33
-pushd %{_target_platform}
-%endif
-%endif
+  %if 0%{?fedora} >= 33
+    pushd %{_target_platform}
+  %endif
 
-%if 0%{?mageia}
-pushd build
+  %if 0%{?mageia}
+    pushd build
+  %endif
 %endif
 
 chrpath -d i2pd
@@ -158,6 +144,24 @@ getent passwd i2pd >/dev/null || \
 
 
 %changelog
+* Sun May 12 2024 orignal <orignal@i2pmail.org> - 2.52.0
+- update to 2.52.0
+
+* Sat Apr 06 2024 orignal <orignal@i2pmail.org> - 2.51.0
+- update to 2.51.0
+
+* Sat Jan 06 2024 orignal <orignal@i2pmail.org> - 2.50.2
+- update to 2.50.2
+
+* Sat Dec 23 2023 r4sas <r4sas@i2pmail.org> - 2.50.1
+- update to 2.50.1
+
+* Mon Dec 18 2023 orignal <orignal@i2pmail.org> - 2.50.0
+- update to 2.50.0
+
+* Mon Sep 18 2023 orignal <orignal@i2pmail.org> - 2.49.0
+- update to 2.49.0
+
 * Mon Jun 12 2023 orignal <orignal@i2pmail.org> - 2.48.0
 - update to 2.48.0
 

contrib/rpm/i2pd.spec

@@ -1,5 +1,5 @@
 Name:          i2pd
-Version:       2.48.0
+Version:       2.52.0
 Release:       1%{?dist}
 Summary:       I2P router written in C++
 Conflicts:     i2pd-git
@@ -26,9 +26,11 @@ Requires:      logrotate
 Requires:      systemd
 Requires(pre): %{_sbindir}/useradd %{_sbindir}/groupadd
 
+
 %description
 C++ implementation of I2P.
 
+
 %prep
 %setup -q
 
@@ -36,71 +38,56 @@ C++ implementation of I2P.
 %build
 cd build
 %if 0%{?rhel} == 7
-%cmake3 \
+  %cmake3 \
     -DWITH_LIBRARY=OFF \
     -DWITH_UPNP=ON \
     -DWITH_HARDENING=ON \
     -DBUILD_SHARED_LIBS:BOOL=OFF
 %else
-%cmake \
+  %cmake \
     -DWITH_LIBRARY=OFF \
     -DWITH_UPNP=ON \
     -DWITH_HARDENING=ON \
-%if 0%{?fedora} > 29
+  %if 0%{?fedora} > 29
     -DBUILD_SHARED_LIBS:BOOL=OFF \
     .
-%else
+  %else
     -DBUILD_SHARED_LIBS:BOOL=OFF
-%endif
-%endif
-
-%if 0%{?rhel} == 9
-pushd redhat-linux-build
+  %endif
 %endif
 
-%if 0%{?fedora} >= 35
-pushd redhat-linux-build
+%if 0%{?rhel} == 9 || 0%{?fedora} >= 35 || 0%{?eln}
+  pushd redhat-linux-build
 %else
-%if 0%{?fedora} >= 33
-pushd %{_target_platform}
-%endif
-%endif
+  %if 0%{?fedora} >= 33
+    pushd %{_target_platform}
+  %endif
 
-%if 0%{?mageia} > 7
-pushd build
+  %if 0%{?mageia} > 7
+    pushd build
+  %endif
 %endif
 
 make %{?_smp_mflags}
 
-%if 0%{?rhel} == 9
-popd
+%if 0%{?rhel} == 9 || 0%{?fedora} >= 33 || 0%{?mageia} > 7
+  popd
 %endif
 
-%if 0%{?fedora} >= 33
-popd
-%endif
-
-%if 0%{?mageia} > 7
-popd
-%endif
 
 %install
 pushd build
 
-%if 0%{?rhel} == 9
-pushd redhat-linux-build
-%endif
-
-%if 0%{?fedora} >= 35
-pushd redhat-linux-build
+%if 0%{?rhel} == 9 || 0%{?fedora} >= 35 || 0%{?eln}
+  pushd redhat-linux-build
 %else
-%if 0%{?fedora} >= 33
-pushd %{_target_platform}
-%endif
-%endif
+  %if 0%{?fedora} >= 33
+    pushd %{_target_platform}
+  %endif
 
-%if 0%{?mageia}
-pushd build
+  %if 0%{?mageia}
+    pushd build
+  %endif
 %endif
 
 chrpath -d i2pd
@@ -155,6 +142,24 @@ getent passwd i2pd >/dev/null || \
 
 
 %changelog
+* Sun May 12 2024 orignal <orignal@i2pmail.org> - 2.52.0
+- update to 2.52.0
+
+* Sat Apr 06 2024 orignal <orignal@i2pmail.org> - 2.51.0
+- update to 2.51.0
+
+* Sat Jan 06 2024 orignal <orignal@i2pmail.org> - 2.50.2
+- update to 2.50.2
+
+* Sat Dec 23 2023 r4sas <r4sas@i2pmail.org> - 2.50.1
+- update to 2.50.1
+
+* Mon Dec 18 2023 orignal <orignal@i2pmail.org> - 2.50.0
+- update to 2.50.0
+
+* Mon Sep 18 2023 orignal <orignal@i2pmail.org> - 2.49.0
+- update to 2.49.0
+
 * Mon Jun 12 2023 orignal <orignal@i2pmail.org> - 2.48.0
 - update to 2.48.0
 

daemon/Daemon.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -150,17 +150,20 @@ namespace util
 
 		bool precomputation; i2p::config::GetOption("precomputation.elgamal", precomputation);
 		bool aesni; i2p::config::GetOption("cpuext.aesni", aesni);
-		bool avx; i2p::config::GetOption("cpuext.avx", avx);
 		bool forceCpuExt; i2p::config::GetOption("cpuext.force", forceCpuExt);
 		bool ssu; i2p::config::GetOption("ssu", ssu);
 		if (!ssu && i2p::config::IsDefault ("precomputation.elgamal"))
 			precomputation = false; // we don't elgamal table if no ssu, unless it's specified explicitly
-		i2p::crypto::InitCrypto (precomputation, aesni, avx, forceCpuExt);
+		i2p::crypto::InitCrypto (precomputation, aesni, forceCpuExt);
 
 		i2p::transport::InitAddressFromIface (); // get address4/6 from interfaces
 
 		int netID; i2p::config::GetOption("netid", netID);
 		i2p::context.SetNetID (netID);
+
+		bool checkReserved; i2p::config::GetOption("reservedrange", checkReserved);
+		i2p::transport::transports.SetCheckReserved(checkReserved);
+
 		i2p::context.Init ();
 
 		i2p::transport::InitTransports ();
@@ -176,7 +179,7 @@ namespace util
 
 		bool transit; i2p::config::GetOption("notransit", transit);
 		i2p::context.SetAcceptsTunnels (!transit);
-		uint16_t transitTunnels; i2p::config::GetOption("limits.transittunnels", transitTunnels);
+		uint32_t transitTunnels; i2p::config::GetOption("limits.transittunnels", transitTunnels);
 		if (isFloodfill && i2p::config::IsDefault ("limits.transittunnels"))
 			transitTunnels *= 2; // double default number of transit tunnels for floodfill
 		i2p::tunnel::tunnels.SetMaxNumTransitTunnels (transitTunnels);
@@ -185,7 +188,7 @@ namespace util
 		std::string bandwidth; i2p::config::GetOption("bandwidth", bandwidth);
 		if (bandwidth.length () > 0)
 		{
-			if (bandwidth[0] >= 'K' && bandwidth[0] <= 'X')
+			if (bandwidth.length () == 1 && ((bandwidth[0] >= 'K' && bandwidth[0] <= 'P') || bandwidth[0] == 'X' ))
 			{
 				i2p::context.SetBandwidth (bandwidth[0]);
 				LogPrint(eLogInfo, "Daemon: Bandwidth set to ", i2p::context.GetBandwidthLimit (), "KBps");
@@ -299,12 +302,10 @@ namespace util
 
 		bool ntcp2; i2p::config::GetOption("ntcp2.enabled", ntcp2);
 		bool ssu2; i2p::config::GetOption("ssu2.enabled", ssu2);
-		bool checkInReserved; i2p::config::GetOption("reservedrange", checkInReserved);
 		LogPrint(eLogInfo, "Daemon: Starting Transports");
 		if(!ssu2) LogPrint(eLogInfo, "Daemon: SSU2 disabled");
 		if(!ntcp2) LogPrint(eLogInfo, "Daemon: NTCP2 disabled");
 
-		i2p::transport::transports.SetCheckReserved(checkInReserved);
 		i2p::transport::transports.Start(ntcp2, ssu2);
 		if (i2p::transport::transports.IsBoundSSU2() || i2p::transport::transports.IsBoundNTCP2())
 			LogPrint(eLogInfo, "Daemon: Transports started");

daemon/HTTPServer.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -133,23 +133,19 @@ namespace http {
 	static void ShowTunnelDetails (std::stringstream& s, enum i2p::tunnel::TunnelState eState, bool explr, int bytes)
 	{
 		std::string state, stateText;
-		switch (eState) {
+		switch (eState) 
+		{
 			case i2p::tunnel::eTunnelStateBuildReplyReceived :
 			case i2p::tunnel::eTunnelStatePending     : state = "building";    break;
-			case i2p::tunnel::eTunnelStateBuildFailed :
-			case i2p::tunnel::eTunnelStateTestFailed  :
+			case i2p::tunnel::eTunnelStateBuildFailed : state = "failed"; stateText = "declined"; break;
+			case i2p::tunnel::eTunnelStateTestFailed  : state = "failed"; stateText = "test failed";  break;
 			case i2p::tunnel::eTunnelStateFailed      : state = "failed";      break;
 			case i2p::tunnel::eTunnelStateExpiring    : state = "expiring";    break;
 			case i2p::tunnel::eTunnelStateEstablished : state = "established"; break;
 			default: state = "unknown"; break;
 		}
-
-		if      (state == "building")    stateText = tr("building");
-		else if (state == "failed")      stateText = tr("failed");
-		else if (state == "expiring")    stateText = tr("expiring");
-		else if (state == "established") stateText = tr("established");
-		else stateText = tr("unknown");
-
+		if (stateText.empty ()) stateText = tr(state);
+		
 		s << "<span class=\"tunnel " << state << "\"> " << stateText << ((explr) ? " (" + tr("exploratory") + ")" : "") << "</span>, ";
 		ShowTraffic(s, bytes);
 		s << "\r\n";
@@ -222,18 +218,19 @@ namespace http {
 		s << "<b>" << tr("ERROR") << ":</b>&nbsp;" << string << "<br>\r\n";
 	}
 
-	static void ShowNetworkStatus (std::stringstream& s, RouterStatus status, RouterError error)
+	static void ShowNetworkStatus (std::stringstream& s, RouterStatus status, bool testing, RouterError error)
 	{
 		switch (status)
 		{
 			case eRouterStatusOK: s << tr("OK"); break;
-			case eRouterStatusTesting: s << tr("Testing"); break;
 			case eRouterStatusFirewalled: s << tr("Firewalled"); break;
 			case eRouterStatusUnknown: s << tr("Unknown"); break;
 			case eRouterStatusProxy: s << tr("Proxy"); break;
 			case eRouterStatusMesh: s << tr("Mesh"); break;
 			default: s << tr("Unknown");
 		}
+		if (testing)
+			s << " (" << tr("Testing") << ")";
 		if (error != eRouterErrorNone)
 		{
 			switch (error)
@@ -264,12 +261,12 @@ namespace http {
 		ShowUptime(s, i2p::context.GetUptime ());
 		s << "<br>\r\n";
 		s << "<b>" << tr("Network status") << ":</b> ";
-		ShowNetworkStatus (s, i2p::context.GetStatus (), i2p::context.GetError ());
+		ShowNetworkStatus (s, i2p::context.GetStatus (), i2p::context.GetTesting(), i2p::context.GetError ());
 		s << "<br>\r\n";
 		if (i2p::context.SupportsV6 ())
 		{
 			s << "<b>" << tr("Network status v6") << ":</b> ";
-			ShowNetworkStatus (s, i2p::context.GetStatusV6 (), i2p::context.GetErrorV6 ());
+			ShowNetworkStatus (s, i2p::context.GetStatusV6 (), i2p::context.GetTestingV6(), i2p::context.GetErrorV6 ());
 			s << "<br>\r\n";
 		}
 #if ((!defined(WIN32) && !defined(QT_GUI_LIB) && !defined(ANDROID)) || defined(ANDROID_BINARY))
@@ -775,7 +772,7 @@ namespace http {
 		s << "  <a class=\"button" << (loglevel == eLogInfo     ? " selected" : "") << "\" href=\"" << webroot << "?cmd=" << HTTP_COMMAND_LOGLEVEL << "&level=info&token=" << token << "\"> info </a> \r\n";
 		s << "  <a class=\"button" << (loglevel == eLogDebug    ? " selected" : "") << "\" href=\"" << webroot << "?cmd=" << HTTP_COMMAND_LOGLEVEL << "&level=debug&token=" << token << "\"> debug </a><br>\r\n<br>\r\n";
 
-		uint16_t maxTunnels = i2p::tunnel::tunnels.GetMaxNumTransitTunnels ();
+		uint32_t maxTunnels = i2p::tunnel::tunnels.GetMaxNumTransitTunnels ();
 		s << "<b>" << tr("Transit tunnels limit") << "</b><br>\r\n";
 		s << "<form method=\"get\" action=\"" << webroot << "\">\r\n";
 		s << "  <input type=\"hidden\" name=\"cmd\" value=\"" << HTTP_COMMAND_LIMITTRANSIT << "\">\r\n";

daemon/HTTPServer.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -25,7 +25,7 @@ namespace http
 	const size_t HTTP_CONNECTION_BUFFER_SIZE = 8192;
 	const int TOKEN_EXPIRATION_TIMEOUT = 30; // in seconds
 	const int COMMAND_REDIRECT_TIMEOUT = 5; // in seconds
-	const int TRANSIT_TUNNELS_LIMIT = 65535;
+	const int TRANSIT_TUNNELS_LIMIT = 1000000;
 
 	class HTTPConnection: public std::enable_shared_from_this<HTTPConnection>
 	{

daemon/I2PControl.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2022, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -338,10 +338,11 @@ namespace client
 	{
 		for (auto it = params.begin (); it != params.end (); it++)
 		{
-			if (it != params.begin ()) results << ",";
 			LogPrint (eLogDebug, "I2PControl: RouterManager request: ", it->first);
 			auto it1 = m_RouterManagerHandlers.find (it->first);
-			if (it1 != m_RouterManagerHandlers.end ()) {
+			if (it1 != m_RouterManagerHandlers.end ()) 
+			{
+				if (it != params.begin ()) results << ",";
 				(this->*(it1->second))(results);
 			} else
 				LogPrint (eLogError, "I2PControl: RouterManager unknown request: ", it->first);

daemon/UPnP.cpp

@@ -1,10 +1,15 @@
+/*
+* Copyright (c) 2013-2024, The PurpleI2P Project
+*
+* This file is part of Purple i2pd project and licensed under BSD3
+*
+* See full license text in LICENSE file at top of project tree
+*/
+
 #ifdef USE_UPNP
 #include <string>
 #include <thread>
 
-#include <boost/thread/thread.hpp>
-#include <boost/asio.hpp>
-
 #include "Log.h"
 
 #include "RouterContext.h"
@@ -166,11 +171,11 @@ namespace transport
 			if (address && !address->host.is_v6 () && address->port)
 				TryPortMapping (address);
 		}
-		m_Timer.expires_from_now (boost::posix_time::minutes(20)); // every 20 minutes
+		m_Timer.expires_from_now (boost::posix_time::minutes(UPNP_PORT_FORWARDING_INTERVAL)); // every 20 minutes
 		m_Timer.async_wait ([this](const boost::system::error_code& ecode)
 		{
 			if (ecode != boost::asio::error::operation_aborted)
-			PortMapping ();
+				PortMapping ();
 		});
 	}
 

daemon/UPnP.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2020, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -28,7 +28,8 @@ namespace i2p
 namespace transport
 {
 	const int UPNP_RESPONSE_TIMEOUT = 2000; // in milliseconds
-
+	const int UPNP_PORT_FORWARDING_INTERVAL = 20; // in minutes
+	
 	enum
 	{
 		UPNP_IGD_NONE = 0,

daemon/UnixDaemon.cpp

@@ -162,12 +162,21 @@ namespace i2p
 
 #ifndef ANDROID
 				if (lockf(pidFH, F_TLOCK, 0) != 0)
+#else
+				struct flock fl;
+				fl.l_len = 0;
+				fl.l_type = F_WRLCK;
+				fl.l_whence = SEEK_SET;
+				fl.l_start = 0;
+
+				if (fcntl(pidFH, F_SETLK, &fl) != 0)
+#endif
 				{
 					LogPrint(eLogError, "Daemon: Could not lock pid file ", pidfile, ": ", strerror(errno));
 					std::cerr << "i2pd: Could not lock pid file " << pidfile << ": " << strerror(errno) << std::endl;
 					return false;
 				}
-#endif
+
 				char pid[10];
 				sprintf(pid, "%d\n", getpid());
 				ftruncate(pidFH, 0);

debian/changelog

@@ -1,3 +1,39 @@
+i2pd (2.52.0-1) unstable; urgency=medium
+
+  * updated to version 2.52.0
+
+ -- orignal <orignal@i2pmail.org>  Sun, 12 May 2024 16:00:00 +0000
+
+i2pd (2.51.0-1) unstable; urgency=medium
+
+  * updated to version 2.51.0/0.9.62
+
+ -- orignal <orignal@i2pmail.org>  Sat, 06 Apr 2024 16:00:00 +0000
+
+i2pd (2.50.2-1) unstable; urgency=medium
+
+  * updated to version 2.50.2/0.9.61
+
+ -- orignal <orignal@i2pmail.org>  Sat, 06 Jan 2024 16:00:00 +0000
+
+i2pd (2.50.1-1) unstable; urgency=medium
+
+  * updated to version 2.50.1/0.9.61
+
+ -- r4sas <r4sas@i2pmail.org>  Sat, 23 Dec 2023 18:30:00 +0000
+
+i2pd (2.50.0-1) unstable; urgency=medium
+
+  * updated to version 2.50.0/0.9.61
+
+ -- orignal <orignal@i2pmail.org>  Mon, 18 Dec 2023 16:00:00 +0000
+
+i2pd (2.49.0-1) unstable; urgency=medium
+
+  * updated to version 2.49.0/0.9.60
+
+ -- orignal <orignal@i2pmail.org>  Mon, 18 Sep 2023 16:00:00 +0000
+
 i2pd (2.48.0-1) unstable; urgency=high
 
   * updated to version 2.48.0/0.9.59

debian/i2pd.1

@@ -64,7 +64,7 @@ The network interface to bind to for IPv4 connections
 The network interface to bind to for IPv6 connections
 .TP
 \fB\-\-ipv4=\fR
-Enable communication through ipv6 (\fIenabled\fR by default)
+Enable communication through ipv4 (\fIenabled\fR by default)
 .TP
 \fB\-\-ipv6\fR
 Enable communication through ipv6 (\fIdisabled\fR by default)

i18n/Chinese.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2022-2023, The PurpleI2P Project
+* Copyright (c) 2022-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -69,6 +69,7 @@ namespace chinese // language namespace
 		{"Stopping in", "距停止还有："},
 		{"Family", "家族"},
 		{"Tunnel creation success rate", "隧道创建成功率"},
+		{"Total tunnel creation success rate", "当前隧道创建成功率"},
 		{"Received", "已接收"},
 		{"%.2f KiB/s", "%.2f KiB/s"},
 		{"Sent", "已发送"},
@@ -95,6 +96,7 @@ namespace chinese // language namespace
 		{"Address", "地址"},
 		{"Type", "类型"},
 		{"EncType", "加密类型"},
+		{"Expire LeaseSet", "到期租约集"},
 		{"Inbound tunnels", "入站隧道"},
 		{"%dms", "%dms"},
 		{"Outbound tunnels", "出站隧道"},
@@ -151,6 +153,8 @@ namespace chinese // language namespace
 		{"StreamID can't be null", "StreamID 不能为空"},
 		{"Return to destination page", "返回目标页面"},
 		{"You will be redirected in %d seconds", "您将在%d秒内被重定向"},
+		{"LeaseSet expiration time updated", "租约集到期时间已更新"},
+		{"LeaseSet is not found or already expired", "租约集未找到或已过期"},
 		{"Transit tunnels count must not exceed %d", "中转隧道数量限制为 %d"},
 		{"Back to commands list", "返回命令列表"},
 		{"Register at reg.i2p", "在 reg.i2p 注册域名"},

i18n/Czech.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2022-2023, The PurpleI2P Project
+* Copyright (c) 2022-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -36,18 +36,18 @@ namespace czech // language namespace
 		{"%.2f GiB", "%.2f GiB"},
 		{"building", "vytváří se"},
 		{"failed", "selhalo"},
-		{"expiring", "končící"},
+		{"expiring", "vyprší platnost"},
 		{"established", "vytvořeno"},
 		{"unknown", "neznámý"},
 		{"exploratory", "průzkumné"},
-		{"Purple I2P Webconsole", "Purple I2P Webkonsole"},
-		{"<b>i2pd</b> webconsole", "<b>i2pd</b> webkonsole"},
+		{"Purple I2P Webconsole", "Purple I2P webová konzole"},
+		{"<b>i2pd</b> webconsole", "<b>i2pd</b> webová konzole"},
 		{"Main page", "Hlavní stránka"},
 		{"Router commands", "Router příkazy"},
-		{"Local Destinations", "Lokální destinace"},
-		{"LeaseSets", "LeaseSety"},
+		{"Local Destinations", "Místní cíle"},
+		{"LeaseSets", "Sety pronájmu"},
 		{"Tunnels", "Tunely"},
-		{"Transit Tunnels", "Transitní tunely"},
+		{"Transit Tunnels", "Tranzitní tunely"},
 		{"Transports", "Transporty"},
 		{"I2P tunnels", "I2P tunely"},
 		{"SAM sessions", "SAM relace"},
@@ -61,18 +61,21 @@ namespace czech // language namespace
 		{"Clock skew", "Časová nesrovnalost"},
 		{"Offline", "Offline"},
 		{"Symmetric NAT", "Symetrický NAT"},
+		{"Full cone NAT", "Full cone NAT"},
+		{"No Descriptors", "Žádné popisovače"},
 		{"Uptime", "Doba provozu"},
-		{"Network status", "Status sítě"},
-		{"Network status v6", "Status sítě v6"},
+		{"Network status", "Stav sítě"},
+		{"Network status v6", "Stav sítě v6"},
 		{"Stopping in", "Zastavuji za"},
 		{"Family", "Rodina"},
 		{"Tunnel creation success rate", "Úspěšnost vytváření tunelů"},
+		{"Total tunnel creation success rate", "Celková míra úspěšnosti vytváření tunelů"},
 		{"Received", "Přijato"},
 		{"%.2f KiB/s", "%.2f KiB/s"},
 		{"Sent", "Odesláno"},
 		{"Transit", "Tranzit"},
-		{"Data path", "Cesta k data souborům"},
-		{"Hidden content. Press on text to see.", "Skrytý kontent. Pro zobrazení, klikni na text."},
+		{"Data path", "Cesta k datovým souborům"},
+		{"Hidden content. Press on text to see.", "Skrytý obsah. Pro zobrazení klikněte sem."},
 		{"Router Ident", "Routerová Identita"},
 		{"Router Family", "Rodina routerů"},
 		{"Router Caps", "Omezení Routerů"},
@@ -93,6 +96,7 @@ namespace czech // language namespace
 		{"Address", "Adresa"},
 		{"Type", "Typ"},
 		{"EncType", "EncType"},
+		{"Expire LeaseSet", "Zrušit platnost setu pronájmu"},
 		{"Inbound tunnels", "Příchozí tunely"},
 		{"%dms", "%dms"},
 		{"Outbound tunnels", "Odchozí tunely"},
@@ -103,21 +107,24 @@ namespace czech // language namespace
 		{"Amount", "Množství"},
 		{"Incoming Tags", "Příchozí štítky"},
 		{"Tags sessions", "Relace štítků"},
-		{"Status", "Status"},
-		{"Local Destination", "Lokální Destinace"},
+		{"Status", "Stav"},
+		{"Local Destination", "Místní cíl"},
 		{"Streams", "Toky"},
 		{"Close stream", "Uzavřít tok"},
+		{"Such destination is not found", "Takováto destinace nebyla nalezena"},
 		{"I2CP session not found", "I2CP relace nenalezena"},
 		{"I2CP is not enabled", "I2CP není zapnuto"},
 		{"Invalid", "Neplatný"},
 		{"Store type", "Druh uložení"},
 		{"Expires", "Vyprší"},
-		{"Non Expired Leases", "Nevypršené Leasy"},
+		{"Non Expired Leases", "Pronájmy, kterým nevypršela platnost"},
 		{"Gateway", "Brána"},
 		{"TunnelID", "ID tunelu"},
 		{"EndDate", "Datum ukončení"},
+		{"floodfill mode is disabled", "režim floodfill je vypnut"},
 		{"Queue size", "Velikost fronty"},
 		{"Run peer test", "Spustit peer test"},
+		{"Reload tunnels configuration", "Znovu načíst nastavení tunelů"},
 		{"Decline transit tunnels", "Odmítnout tranzitní tunely"},
 		{"Accept transit tunnels", "Přijmout tranzitní tunely"},
 		{"Cancel graceful shutdown", "Zrušit hladké vypnutí"},
@@ -145,14 +152,17 @@ namespace czech // language namespace
 		{"Destination not found", "Destinace nenalezena"},
 		{"StreamID can't be null", "StreamID nemůže být null"},
 		{"Return to destination page", "Zpět na stránku destinací"},
-		{"Back to commands list", "Zpět na list příkazů"},
+		{"You will be redirected in %d seconds", "Budete přesměrováni za %d sekund"},
+		{"LeaseSet expiration time updated", "Aktualizován čas vypršení platnosti setu pronájmu"},
+		{"LeaseSet is not found or already expired", "Set pronájmu není k nalezení nebo již vypršela jeho platnost"},
+		{"Transit tunnels count must not exceed %d", "Počet tranzitních tunelů nesmí překročit %d"},
+		{"Back to commands list", "Zpět na seznam příkazů"},
 		{"Register at reg.i2p", "Zaregistrovat na reg.i2p"},
 		{"Description", "Popis"},
 		{"A bit information about service on domain", "Trochu informací o službě na doméně"},
 		{"Submit", "Odeslat"},
 		{"Domain can't end with .b32.i2p", "Doména nesmí končit na .b32.i2p"},
 		{"Domain must end with .i2p", "Doména musí končit s .i2p"},
-		{"Such destination is not found", "Takováto destinace nebyla nalezena"},
 		{"Unknown command", "Neznámý příkaz"},
 		{"Command accepted", "Příkaz přijat"},
 		{"Proxy error", "Chyba proxy serveru"},
@@ -162,6 +172,15 @@ namespace czech // language namespace
 		{"You may try to find this host on jump services below", "Můžete se pokusit najít tohoto hostitele na startovacích službách níže"},
 		{"Invalid request", "Neplatný požadavek"},
 		{"Proxy unable to parse your request", "Proxy server nemohl zpracovat váš požadavek"},
+		{"Addresshelper is not supported", "Addresshelper není podporován"},
+		{"Host %s is <font color=red>already in router's addressbook</font>. <b>Be careful: source of this URL may be harmful!</b> Click here to update record: <a href=\"%s%s%s&update=true\">Continue</a>.", "Hostitel %s je <font color=red>již v adresáři routeru</font>. <b>Buďte opatrní: zdroj této URL může být škodlivý!</b> Klikněte zde pro aktualizaci záznamu: <a href=\"%s%s%s&update=true\">Pokračovat</a>."},
+		{"Addresshelper forced update rejected", "Addresshelperem vynucená aktualizace zamítnuta"},
+		{"To add host <b>%s</b> in router's addressbook, click here: <a href=\"%s%s%s\">Continue</a>.", "Pro přidání hostitele <b>%s</b> do adresáře routeru, klikněte zde: <a href=\"%s%s%s\">Pokračovat</a>."},
+		{"Addresshelper request", "Požadavek Addresshelperu"},
+		{"Host %s added to router's addressbook from helper. Click here to proceed: <a href=\"%s\">Continue</a>.", "Hostitel %s přidán do adresáře routeru od pomocníka. Klikněte zde pro pokračování: <a href=\"%s\">Pokračovat</a>."},
+		{"Addresshelper adding", "Addresshelper přidávání"},
+		{"Host %s is <font color=red>already in router's addressbook</font>. Click here to update record: <a href=\"%s%s%s&update=true\">Continue</a>.", "Hostitel %s je <font color=red>již v adresáři routeru</font>. Klikněte zde pro aktualizaci záznamu: <a href=\"%s%s%s&update=true\">Pokračovat</a>."},
+		{"Addresshelper update", "Addresshelper aktualizace"},
 		{"Invalid request URI", "Neplatný URI požadavek"},
 		{"Can't detect destination host from request", "Nelze zjistit cílového hostitele z požadavku"},
 		{"Outproxy failure", "Outproxy selhání"},

i18n/French.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2022-2023, The PurpleI2P Project
+* Copyright (c) 2022-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -58,7 +58,7 @@ namespace french // language namespace
 		{"Unknown", "Inconnu"},
 		{"Proxy", "Proxy"},
 		{"Mesh", "Maillé"},
-		{"Clock skew", "Horloge décalée"},
+		{"Clock skew", "Décalage de l'horloge"},
 		{"Offline", "Hors ligne"},
 		{"Symmetric NAT", "NAT symétrique"},
 		{"Full cone NAT", "NAT à cône complet"},
@@ -68,8 +68,8 @@ namespace french // language namespace
 		{"Network status v6", "État du réseau v6"},
 		{"Stopping in", "Arrêt dans"},
 		{"Family", "Famille"},
-		{"Tunnel creation success rate", "Taux de succès de création de tunnels"},
-		{"Total tunnel creation success rate", "Taux de réussite de création de tunnel"},
+		{"Tunnel creation success rate", "Taux de création de tunnel réussie"},
+		{"Total tunnel creation success rate", "Taux total de création de tunnel réussie"},
 		{"Received", "Reçu"},
 		{"%.2f KiB/s", "%.2f Kio/s"},
 		{"Sent", "Envoyé"},
@@ -96,7 +96,7 @@ namespace french // language namespace
 		{"Address", "Adresse"},
 		{"Type", "Type"},
 		{"EncType", "EncType"},
-		{"Expire LeaseSet", "Expiration du LeaseSet"},
+		{"Expire LeaseSet", "Expirer le jeu de baux"},
 		{"Inbound tunnels", "Tunnels entrants"},
 		{"%dms", "%dms"},
 		{"Outbound tunnels", "Tunnels sortants"},
@@ -153,8 +153,8 @@ namespace french // language namespace
 		{"StreamID can't be null", "StreamID ne peut pas être vide"},
 		{"Return to destination page", "Retourner à la page de destination"},
 		{"You will be redirected in %d seconds", "Vous serez redirigé dans %d secondes"},
-		{"LeaseSet expiration time updated", "Temps d'expiration du LeaseSet mis à jour"},
-		{"LeaseSet is not found or already expired", "Le LeaseSet est introuvable ou a déjà expirée"},
+		{"LeaseSet expiration time updated", "Temps d'expiration du jeu de baux mis à jour"},
+		{"LeaseSet is not found or already expired", "Le jeu de baux est introuvable ou a déjà expiré"},
 		{"Transit tunnels count must not exceed %d", "Le nombre de tunnels de transit ne doit pas excéder %d"},
 		{"Back to commands list", "Retour à la liste des commandes"},
 		{"Register at reg.i2p", "Inscription à reg.i2p"},

i18n/Italian.cpp

@@ -69,6 +69,7 @@ namespace italian // language namespace
 		{"Stopping in", "Arresto in"},
 		{"Family", "Famiglia"},
 		{"Tunnel creation success rate", "Percentuale di tunnel creati con successo"},
+		{"Total tunnel creation success rate", "Percentuale di successo totale nella creazione del tunnel"},
 		{"Received", "Ricevuti"},
 		{"%.2f KiB/s", "%.2f KiB/s"},
 		{"Sent", "Inviati"},
@@ -95,6 +96,7 @@ namespace italian // language namespace
 		{"Address", "Indirizzo"},
 		{"Type", "Tipologia"},
 		{"EncType", "Tipo di crittografia"},
+		{"Expire LeaseSet", "Scadenza LeaseSet"},
 		{"Inbound tunnels", "Tunnel in entrata"},
 		{"%dms", "%dms"},
 		{"Outbound tunnels", "Tunnel in uscita"},
@@ -109,6 +111,7 @@ namespace italian // language namespace
 		{"Local Destination", "Destinazione locale"},
 		{"Streams", "Flussi"},
 		{"Close stream", "Interrompi il flusso"},
+		{"Such destination is not found", "Questa destinazione non è stata trovata"},
 		{"I2CP session not found", "Sessione I2CP non trovata"},
 		{"I2CP is not enabled", "I2CP non è abilitato"},
 		{"Invalid", "Invalido"},
@@ -150,6 +153,8 @@ namespace italian // language namespace
 		{"StreamID can't be null", "Lo StreamID non può essere null"},
 		{"Return to destination page", "Ritorna alla pagina di destinazione"},
 		{"You will be redirected in %d seconds", "Sarai reindirizzato tra %d secondi"},
+		{"LeaseSet expiration time updated", "Tempo di scadenza LeaseSet aggiornato"},
+		{"LeaseSet is not found or already expired", "LeaseSet non trovato o già scaduto"},
 		{"Transit tunnels count must not exceed %d", "Il conteggio dei tunnel di transito non deve superare %d"},
 		{"Back to commands list", "Ritorna alla lista dei comandi"},
 		{"Register at reg.i2p", "Registra a reg.i2p"},
@@ -158,7 +163,6 @@ namespace italian // language namespace
 		{"Submit", "Invia"},
 		{"Domain can't end with .b32.i2p", "I domini non possono terminare con .b32.i2p"},
 		{"Domain must end with .i2p", "I domini devono terminare con .i2p"},
-		{"Such destination is not found", "Questa destinazione non è stata trovata"},
 		{"Unknown command", "Comando sconosciuto"},
 		{"Command accepted", "Comando accettato"},
 		{"Proxy error", "Errore del proxy"},

i18n/Polish.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2023, The PurpleI2P Project
+* Copyright (c) 2023-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -31,22 +31,186 @@ namespace polish // language namespace
 
 	static std::map<std::string, std::string> strings
 	{
+		{"%.2f KiB", "%.2f KiB"},
+		{"%.2f MiB", "%.2f MiB"},
+		{"%.2f GiB", "%.2f GiB"},
 		{"building", "Kompilowanie"},
 		{"failed", "nieudane"},
 		{"expiring", "wygasający"},
 		{"established", "ustanowiony"},
+		{"unknown", "nieznany"},
+		{"exploratory", "eksploracyjny"},
+		{"Purple I2P Webconsole", "Konsola webowa Purple I2P"},
+		{"<b>i2pd</b> webconsole", "<b>i2pd</b> konsola webowa"},
 		{"Main page", "Strona główna"},
 		{"Router commands", "Komendy routera"},
+		{"Local Destinations", "Lokalne miejsca docelowe"},
+		{"LeaseSets", "ZestawyNajmu"},
 		{"Tunnels", "Tunele"},
+		{"Transit Tunnels", "Tunele Tranzytu"},
+		{"Transports", "Transportery"},
+		{"I2P tunnels", "Tunele I2P"},
+		{"SAM sessions", "Sesje SAM"},
+		{"ERROR", "BŁĄD"},
 		{"OK", "Ok"},
+		{"Testing", "Testowanie"},
+		{"Firewalled", "Za zaporą sieciową"},
+		{"Unknown", "Nieznany"},
+		{"Proxy", "Proxy"},
+		{"Mesh", "Sieć"},
+		{"Clock skew", "Przesunięcie czasu"},
+		{"Offline", "Offline"},
+		{"Symmetric NAT", "Symetryczny NAT"},
+		{"Full cone NAT", "Pełny stożek NAT"},
+		{"No Descriptors", "Brak deskryptorów"},
 		{"Uptime", "Czas pracy"},
+		{"Network status", "Stan sieci"},
+		{"Network status v6", "Stan sieci v6"},
+		{"Stopping in", "Zatrzymywanie za"},
+		{"Family", "Rodzina"},
+		{"Tunnel creation success rate", "Wskaźnik sukcesu tworzenia tunelu"},
+		{"Total tunnel creation success rate", "Całkowity wskaźnik sukcesu tworzenia tunelu"},
+		{"Received", "Odebrano"},
+		{"%.2f KiB/s", "%.2f KiB/s"},
 		{"Sent", "Wysłane"},
+		{"Transit", "Tranzyt"},
+		{"Data path", "Ścieżka do danych"},
+		{"Hidden content. Press on text to see.", "Ukryta zawartość. Naciśnij tekst, aby zobaczyć."},
+		{"Router Ident", "Identyfikator routera"},
+		{"Router Family", "Rodzina routera"},
+		{"Router Caps", "Możliwości routera"},
+		{"Version", "Wersja"},
+		{"Our external address", "Nasz zewnętrzny adres"},
+		{"supported", "wspierane"},
+		{"Routers", "Routery"},
+		{"Floodfills", "Floodfille"},
+		{"Client Tunnels", "Tunele Klienta"},
+		{"Services", "Usługi"},
+		{"Enabled", "Aktywny"},
+		{"Disabled", "Wyłączony"},
+		{"Encrypted B33 address", "Zaszyfrowany adres B33"},
+		{"Address registration line", "Linia rejestracji adresu"},
+		{"Domain", "Domena"},
+		{"Generate", "Generuj"},
+		{"<b>Note:</b> result string can be used only for registering 2LD domains (example.i2p). For registering subdomains please use i2pd-tools.", "<b>Uwaga:</b> wynik string może być używany tylko do rejestracji domen 2LD (przykład.i2p). Do rejestracji subdomen należy użyć narzędzi i2pd."},
+		{"Address", "Adres"},
+		{"Type", "Typ"},
+		{"EncType", "TypEnkrypcji"},
+		{"Expire LeaseSet", "Wygaśnij LeaseSet"},
+		{"Inbound tunnels", "Tunele przychodzące"},
+		{"%dms", "%dms"},
+		{"Outbound tunnels", "Tunele wychodzące"},
+		{"Tags", "Tagi"},
+		{"Incoming", "Przychodzące"},
+		{"Outgoing", "Wychodzące"},
+		{"Destination", "Miejsce docelowe"},
+		{"Amount", "Ilość"},
+		{"Incoming Tags", "Przychodzące tagi"},
+		{"Tags sessions", "Sesje tagów"},
+		{"Status", "Status"},
+		{"Local Destination", "Lokalne miejsce docelowe"},
+		{"Streams", "Strumienie"},
+		{"Close stream", "Zamknij strumień"},
+		{"Such destination is not found", "Nie znaleziono takiego miejsca docelowego"},
+		{"I2CP session not found", "Sesja I2CP nie została znaleziona"},
+		{"I2CP is not enabled", "I2CP nie jest włączone"},
+		{"Invalid", "Niepoprawny"},
+		{"Store type", "Rodzaj przechowywania"},
+		{"Expires", "Wygasa za"},
+		{"Non Expired Leases", "Leasingi niewygasłe"},
+		{"Gateway", "Brama"},
+		{"TunnelID", "IDTunelu"},
+		{"EndDate", "DataZakończenia"},
+		{"floodfill mode is disabled", "tryb floodfill jest wyłączony"},
+		{"Queue size", "Wielkość kolejki"},
+		{"Run peer test", "Wykonaj test peer"},
+		{"Reload tunnels configuration", "Załaduj ponownie konfigurację tuneli"},
+		{"Decline transit tunnels", "Odrzuć tunele tranzytowe"},
+		{"Accept transit tunnels", "Akceptuj tunele tranzytowe"},
+		{"Cancel graceful shutdown", "Anuluj łagodne wyłączenie"},
+		{"Start graceful shutdown", "Rozpocznij łagodne wyłączenie"},
+		{"Force shutdown", "Wymuś wyłączenie"},
+		{"Reload external CSS styles", "Odśwież zewnętrzne style CSS"},
+		{"<b>Note:</b> any action done here are not persistent and not changes your config files.", "<b>Uwaga:</b> każda akcja wykonana tutaj nie jest trwała i nie zmienia Twoich plików konfiguracyjnych."},
+		{"Logging level", "Poziom logowania"},
+		{"Transit tunnels limit", "Limit tuneli tranzytowych"},
+		{"Change", "Zmień"},
+		{"Change language", "Zmień język"},
+		{"no transit tunnels currently built", "brak obecnie zbudowanych tuneli tranzytowych"},
+		{"SAM disabled", "SAM wyłączony"},
+		{"no sessions currently running", "brak aktualnie uruchomionych sesji"},
+		{"SAM session not found", "Sesja SAM nie została znaleziona"},
+		{"SAM Session", "Sesja SAM"},
+		{"Server Tunnels", "Tunele Serwera"},
+		{"Client Forwards", "Przekierowania Klienta"},
+		{"Server Forwards", "Przekierowania Serwera"},
+		{"Unknown page", "Nieznana strona"},
+		{"Invalid token", "Nieprawidłowy token"},
+		{"SUCCESS", "SUKCES"},
+		{"Stream closed", "Strumień zamknięty"},
+		{"Stream not found or already was closed", "Strumień nie został znaleziony lub został już zamknięty"},
+		{"Destination not found", "Nie znaleziono punktu docelowego"},
+		{"StreamID can't be null", "StreamID nie może być null"},
+		{"Return to destination page", "Wróć do strony miejsca docelowego"},
+		{"You will be redirected in %d seconds", "Zostaniesz prekierowany za %d sekund"},
+		{"LeaseSet expiration time updated", "Zaktualizowano czas wygaśnięcia LeaseSet"},
+		{"LeaseSet is not found or already expired", "LeaseSet nie został znaleziony lub już wygasł"},
+		{"Transit tunnels count must not exceed %d", "Liczba tuneli tranzytowych nie może przekraczać %d"},
+		{"Back to commands list", "Powrót do listy poleceń"},
+		{"Register at reg.i2p", "Zarejestruj się na reg.i2p"},
+		{"Description", "Opis"},
+		{"A bit information about service on domain", "Trochę informacji o usłudze w domenie"},
+		{"Submit", "Zatwierdź"},
+		{"Domain can't end with .b32.i2p", "Domena nie może kończyć się na .b32.i2p"},
+		{"Domain must end with .i2p", "Domena musi kończyć się na .i2p"},
+		{"Unknown command", "Nieznana komenda"},
+		{"Command accepted", "Polecenie zaakceptowane"},
+		{"Proxy error", "Błąd serwera proxy"},
+		{"Proxy info", "Informacje o proxy"},
+		{"Proxy error: Host not found", "Błąd proxy: Nie znaleziono hosta"},
+		{"Remote host not found in router's addressbook", "Nie znaleziono zdalnego hosta w książce adresowej routera"},
+		{"You may try to find this host on jump services below", "Możesz znaleźć tego hosta na poniższych usługach skoku"},
+		{"Invalid request", "Nieprawidłowe żądanie"},
+		{"Proxy unable to parse your request", "Serwer proxy nie może przetworzyć Twojego żądania"},
+		{"Addresshelper is not supported", "Adresshelper nie jest obsługiwany"},
+		{"Host %s is <font color=red>already in router's addressbook</font>. <b>Be careful: source of this URL may be harmful!</b> Click here to update record: <a href=\"%s%s%s&update=true\">Continue</a>.", "Host %s <font color=red>jest już w książce adresowej routera</font>. <b>Uważaj: źródło tego adresu URL może być szkodliwe!</b> Kliknij tutaj, aby zaktualizować rekord: <a href=\"%s%s%s&update=true\">Kontynuuj</a>."},
+		{"Addresshelper forced update rejected", "Wymuszona aktualizacja Addreshelper odrzucona"},
+		{"To add host <b>%s</b> in router's addressbook, click here: <a href=\"%s%s%s\">Continue</a>.", "Aby dodać host <b>%s</b> w książce adresowej routera, kliknij tutaj: <a href=\"%s%s%s\">Kontynuuj</a>."},
+		{"Addresshelper request", "Prośba Addresshelper"},
+		{"Host %s added to router's addressbook from helper. Click here to proceed: <a href=\"%s\">Continue</a>.", "Host %s dodany do książki adresowej routera od pomocnika. Kliknij tutaj, aby kontynuować: <a href=\"%s\">Kontynuuj</a>."},
+		{"Addresshelper adding", "Dodawanie Addresshelper"},
+		{"Host %s is <font color=red>already in router's addressbook</font>. Click here to update record: <a href=\"%s%s%s&update=true\">Continue</a>.", "Host %s jest <font color=red>już w książce adresowej routera</font>. Kliknij tutaj, aby zaktualizować rekord: <a href=\"%s%s%s&update=true\">Kontynuuj</a>."},
+		{"Addresshelper update", "Aktualizacja Adresshelper"},
+		{"Invalid request URI", "Nieprawidłowe URI żądania"},
+		{"Can't detect destination host from request", "Nie można wykryć hosta docelowego z żądania"},
+		{"Outproxy failure", "Błąd proxy wyjściowego"},
+		{"Bad outproxy settings", "Błędne ustawienia proxy wyjściowych"},
+		{"Host %s is not inside I2P network, but outproxy is not enabled", "Host %s nie jest wewnątrz sieci I2P, a proxy wyjściowe nie jest włączone"},
+		{"Unknown outproxy URL", "Nieznany adres URL proxy wyjściowego"},
+		{"Cannot resolve upstream proxy", "Nie można rozwiązać serwera proxy upstream"},
+		{"Hostname is too long", "Nazwa hosta jest zbyt długa"},
+		{"Cannot connect to upstream SOCKS proxy", "Nie można połączyć się z proxy SOCKS upstream"},
+		{"Cannot negotiate with SOCKS proxy", "Nie można negocjować z proxy SOCKS"},
+		{"CONNECT error", "Błąd POŁĄCZENIE"},
+		{"Failed to connect", "Nie udało się połączyć"},
+		{"SOCKS proxy error", "Błąd proxy SOCKS"},
+		{"Failed to send request to upstream", "Nie udało się wysłać żądania do upstream"},
+		{"No reply from SOCKS proxy", "Brak odpowiedzi od serwera proxy SOCKS"},
+		{"Cannot connect", "Nie można się połączyć"},
+		{"HTTP out proxy not implemented", "Serwer wyjściowy proxy HTTP nie został zaimplementowany"},
+		{"Cannot connect to upstream HTTP proxy", "Nie można połączyć się z proxy HTTP upstream"},
+		{"Host is down", "Host jest niedostępny"},
+		{"Can't create connection to requested host, it may be down. Please try again later.", "Nie można utworzyć połączenia z żądanym hostem, może być wyłączony. Spróbuj ponownie później."},
 		{"", ""},
 	};
 
 	static std::map<std::string, std::vector<std::string>> plurals
 	{
-		{"", {"", "", ""}},
+		{"%d days", {"%d dzień", "%d dni", "%d dni", "%d dni"}},
+		{"%d hours", {"%d godzina", "%d godziny", "%d godzin", "%d godzin"}},
+		{"%d minutes", {"%d minuta", "%d minuty", "%d minut", "%d minut"}},
+		{"%d seconds", {"%d sekunda", "%d sekundy", "%d sekund", "%d sekund"}},
+		{"", {"", "", "", ""}},
 	};
 
 	std::shared_ptr<const i2p::i18n::Locale> GetLocale()

i18n/Portuguese.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2023, The PurpleI2P Project
+* Copyright (c) 2023-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -58,7 +58,7 @@ namespace portuguese // language namespace
 		{"Unknown", "Desconhecido"},
 		{"Proxy", "Proxy"},
 		{"Mesh", "Malha"},
-		{"Clock skew", "Defasagem do Relógio"},
+		{"Clock skew", "Desvio de Relógio"},
 		{"Offline", "Desligado"},
 		{"Symmetric NAT", "NAT Simétrico"},
 		{"Full cone NAT", "Full cone NAT"},
@@ -69,11 +69,12 @@ namespace portuguese // language namespace
 		{"Stopping in", "Parando em"},
 		{"Family", "Família"},
 		{"Tunnel creation success rate", "Taxa de sucesso na criação de túneis"},
+		{"Total tunnel creation success rate", "Taxa total de sucesso na criação de túneis"},
 		{"Received", "Recebido"},
 		{"%.2f KiB/s", "%.2f KiB/s"},
 		{"Sent", "Enviado"},
 		{"Transit", "Trânsito"},
-		{"Data path", "Diretório dos dados"},
+		{"Data path", "Diretório de dados"},
 		{"Hidden content. Press on text to see.", "Conteúdo oculto. Clique no texto para revelar."},
 		{"Router Ident", "Identidade do Roteador"},
 		{"Router Family", "Família do Roteador"},
@@ -95,6 +96,7 @@ namespace portuguese // language namespace
 		{"Address", "Endereço"},
 		{"Type", "Tipo"},
 		{"EncType", "Tipo de Criptografia"},
+		{"Expire LeaseSet", "Expirar LeaseSet"},
 		{"Inbound tunnels", "Túneis de Entrada"},
 		{"%dms", "%dms"},
 		{"Outbound tunnels", "Túneis de Saída"},
@@ -104,11 +106,12 @@ namespace portuguese // language namespace
 		{"Destination", "Destinos"},
 		{"Amount", "Quantidade"},
 		{"Incoming Tags", "Etiquetas de Entrada"},
-		{"Tags sessions", "Sessões de etiquetas"},
+		{"Tags sessions", "Sessões de Etiquetas"},
 		{"Status", "Estado"},
-		{"Local Destination", "Destinos Locais"},
+		{"Local Destination", "Destino Local"},
 		{"Streams", "Fluxos"},
 		{"Close stream", "Fechar fluxo"},
+		{"Such destination is not found", "Tal destino não foi encontrado"},
 		{"I2CP session not found", "Sessão do I2CP não encontrada"},
 		{"I2CP is not enabled", "I2CP não está ativado"},
 		{"Invalid", "Inválido"},
@@ -145,42 +148,43 @@ namespace portuguese // language namespace
 		{"Invalid token", "Token Inválido"},
 		{"SUCCESS", "SUCESSO"},
 		{"Stream closed", "Fluxo fechado"},
-		{"Stream not found or already was closed", "Fluxo não encontrado ou já encerrado"},
+		{"Stream not found or already was closed", "Fluxo não encontrado ou já fechado"},
 		{"Destination not found", "Destino não encontrado"},
 		{"StreamID can't be null", "StreamID não pode ser nulo"},
 		{"Return to destination page", "Retornar para à página de destino"},
 		{"You will be redirected in %d seconds", "Você será redirecionado em %d segundos"},
+		{"LeaseSet expiration time updated", "Tempo de validade do LeaseSet atualizado"},
+		{"LeaseSet is not found or already expired", "LeaseSet não foi encontrado ou já expirou"},
 		{"Transit tunnels count must not exceed %d", "A contagem de túneis de trânsito não deve exceder %d"},
 		{"Back to commands list", "Voltar para a lista de comandos"},
-		{"Register at reg.i2p", "Registrar na reg.i2p"},
+		{"Register at reg.i2p", "Registrar em reg.i2p"},
 		{"Description", "Descrição"},
 		{"A bit information about service on domain", "Algumas informações sobre o serviço no domínio"},
 		{"Submit", "Enviar"},
 		{"Domain can't end with .b32.i2p", "O domínio não pode terminar com .b32.i2p"},
 		{"Domain must end with .i2p", "O domínio não pode terminar com .i2p"},
-		{"Such destination is not found", "Tal destino não foi encontrado"},
 		{"Unknown command", "Comando desconhecido"},
 		{"Command accepted", "Comando aceito"},
 		{"Proxy error", "Erro no proxy"},
 		{"Proxy info", "Informações do proxy"},
 		{"Proxy error: Host not found", "Erro no proxy: Host não encontrado"},
 		{"Remote host not found in router's addressbook", "O host remoto não foi encontrado no livro de endereços do roteador"},
-		{"You may try to find this host on jump services below", "Você pode tentar encontrar este host nos jump services abaixo"},
+		{"You may try to find this host on jump services below", "Você pode tentar encontrar este host nos serviços de jump abaixo"},
 		{"Invalid request", "Requisição inválida"},
 		{"Proxy unable to parse your request", "O proxy foi incapaz de processar a sua requisição"},
 		{"Addresshelper is not supported", "O Auxiliar de Endereços não é suportado"},
 		{"Host %s is <font color=red>already in router's addressbook</font>. <b>Be careful: source of this URL may be harmful!</b> Click here to update record: <a href=\"%s%s%s&update=true\">Continue</a>.", "O host %s já <font color=red>está no catálogo de endereços do roteador</font>. <b>Cuidado: a fonte desta URL pode ser perigosa!</b> Clique aqui para atualizar o registro: <a href=\"%s%s%s&update=true\">Continuar</a>."},
 		{"Addresshelper forced update rejected", "A atualização forçada do Auxiliar de Endereços foi rejeitada"},
 		{"To add host <b>%s</b> in router's addressbook, click here: <a href=\"%s%s%s\">Continue</a>.", "Para adicionar o host <b> %s </b> ao catálogo de endereços do roteador, clique aqui: <a href='%s%s%s'>Continuar </a>."},
-		{"Addresshelper request", "Requisição do Auxiliar de Endereços"},
-		{"Host %s added to router's addressbook from helper. Click here to proceed: <a href=\"%s\">Continue</a>.", "O host %s foi adicionado ao catálogo de endereços do roteador por um auxiliar. Clique aqui para proceder: <a href='%s'> Continuar </a>."},
+		{"Addresshelper request", "Requisição ao Auxiliar de Endereços"},
+		{"Host %s added to router's addressbook from helper. Click here to proceed: <a href=\"%s\">Continue</a>.", "O host %s foi adicionado ao catálogo de endereços do roteador por um auxiliar. Clique aqui para prosseguir: <a href='%s'> Continuar </a>."},
 		{"Addresshelper adding", "Auxiliar de Endereço adicionando"},
 		{"Host %s is <font color=red>already in router's addressbook</font>. Click here to update record: <a href=\"%s%s%s&update=true\">Continue</a>.", "O host %s já <font color=red>está no catálogo de endereços do roteador </font>. Clique aqui para atualizar o registro: <a href=\"%s%s%s&update=true\">Continuar</a>."},
 		{"Addresshelper update", "Atualização do Auxiliar de Endereços"},
 		{"Invalid request URI", "A URI de requisição é inválida"},
 		{"Can't detect destination host from request", "Incapaz de detectar o host de destino da requisição"},
 		{"Outproxy failure", "Falha no outproxy"},
-		{"Bad outproxy settings", "Configurações ruins de outproxy"},
+		{"Bad outproxy settings", "Má configurações do outproxy"},
 		{"Host %s is not inside I2P network, but outproxy is not enabled", "O host %s não está dentro da rede I2P, mas o outproxy não está ativado"},
 		{"Unknown outproxy URL", "URL de outproxy desconhecida"},
 		{"Cannot resolve upstream proxy", "Não é possível resolver o proxy de entrada"},

i18n/Ukrainian.cpp

@@ -69,6 +69,7 @@ namespace ukrainian // language namespace
 		{"Stopping in", "Зупинка через"},
 		{"Family", "Сімейство"},
 		{"Tunnel creation success rate", "Успішно побудованих тунелів"},
+		{"Total tunnel creation success rate", "Загальна кількість створених тунелів"},
 		{"Received", "Отримано"},
 		{"%.2f KiB/s", "%.2f КіБ/с"},
 		{"Sent", "Відправлено"},
@@ -95,6 +96,7 @@ namespace ukrainian // language namespace
 		{"Address", "Адреса"},
 		{"Type", "Тип"},
 		{"EncType", "ТипШифр"},
+		{"Expire LeaseSet", "Завершити LeaseSet"},
 		{"Inbound tunnels", "Вхідні тунелі"},
 		{"%dms", "%dмс"},
 		{"Outbound tunnels", "Вихідні тунелі"},
@@ -109,6 +111,7 @@ namespace ukrainian // language namespace
 		{"Local Destination", "Локальні Призначення"},
 		{"Streams", "Потоки"},
 		{"Close stream", "Закрити потік"},
+		{"Such destination is not found", "Така точка призначення не знайдена"},
 		{"I2CP session not found", "I2CP сесія не знайдена"},
 		{"I2CP is not enabled", "I2CP не увікнуто"},
 		{"Invalid", "Некоректний"},
@@ -150,6 +153,8 @@ namespace ukrainian // language namespace
 		{"StreamID can't be null", "Ідентифікатор потоку не може бути порожнім"},
 		{"Return to destination page", "Повернутися на сторінку точки призначення"},
 		{"You will be redirected in %d seconds", "Ви будете переадресовані через %d секунд"},
+		{"LeaseSet expiration time updated", "Час закінчення LeaseSet оновлено"},
+		{"LeaseSet is not found or already expired", "LeaseSet не знайдено або вже закінчився"},
 		{"Transit tunnels count must not exceed %d", "Кількість транзитних тунелів не повинна перевищувати %d"},
 		{"Back to commands list", "Повернутися до списку команд"},
 		{"Register at reg.i2p", "Зареєструвати на reg.i2p"},
@@ -158,7 +163,6 @@ namespace ukrainian // language namespace
 		{"Submit", "Надіслати"},
 		{"Domain can't end with .b32.i2p", "Домен не може закінчуватися на .b32.i2p"},
 		{"Domain must end with .i2p", "Домен повинен закінчуватися на .i2p"},
-		{"Such destination is not found", "Така точка призначення не знайдена"},
 		{"Unknown command", "Невідома команда"},
 		{"Command accepted", "Команда прийнята"},
 		{"Proxy error", "Помилка проксі"},

i18n/Uzbek.cpp

@@ -69,6 +69,7 @@ namespace uzbek // language namespace
 		{"Stopping in", "Ichida to'xtatish"},
 		{"Family", "Oila"},
 		{"Tunnel creation success rate", "Tunnel yaratish muvaffaqiyat darajasi"},
+		{"Total tunnel creation success rate", "Tunnel yaratishning umumiy muvaffaqiyat darajasi"},
 		{"Received", "Qabul qilindi"},
 		{"%.2f KiB/s", "%.2f KiB/s"},
 		{"Sent", "Yuborilgan"},
@@ -95,6 +96,7 @@ namespace uzbek // language namespace
 		{"Address", "Manzil"},
 		{"Type", "Turi"},
 		{"EncType", "ShifrlashTuri"},
+		{"Expire LeaseSet", "LeaseSet muddati tugaydi"},
 		{"Inbound tunnels", "Kirish tunnellari"},
 		{"%dms", "%dms"},
 		{"Outbound tunnels", "Chiquvchi tunnellar"},
@@ -109,6 +111,7 @@ namespace uzbek // language namespace
 		{"Local Destination", "Mahalliy joylanish"},
 		{"Streams", "Strim"},
 		{"Close stream", "Strimni o'chirish"},
+		{"Such destination is not found", "Bunday yo'nalish topilmadi"},
 		{"I2CP session not found", "I2CP sessiyasi topilmadi"},
 		{"I2CP is not enabled", "I2CP yoqilmagan"},
 		{"Invalid", "Noto'g'ri"},
@@ -150,6 +153,8 @@ namespace uzbek // language namespace
 		{"StreamID can't be null", "StreamID bo'sh bo'lishi mumkin emas"},
 		{"Return to destination page", "Manzilgoh sahifasiga qaytish"},
 		{"You will be redirected in %d seconds", "Siz %d soniyadan so‘ng boshqa yo‘nalishga yo‘naltirilasiz"},
+		{"LeaseSet expiration time updated", "LeaseSet amal qilish muddati yangilandi"},
+		{"LeaseSet is not found or already expired", "LeaseSet topilmadi yoki muddati tugagan"},
 		{"Transit tunnels count must not exceed %d", "Tranzit tunnellar soni %d dan oshmasligi kerak"},
 		{"Back to commands list", "Buyruqlar ro'yxatiga qaytish"},
 		{"Register at reg.i2p", "Reg.i2p-da ro'yxatdan o'ting"},
@@ -158,7 +163,6 @@ namespace uzbek // language namespace
 		{"Submit", "Yuborish"},
 		{"Domain can't end with .b32.i2p", "Domen .b32.i2p bilan tugashi mumkin emas"},
 		{"Domain must end with .i2p", "Domen .i2p bilan tugashi kerak"},
-		{"Such destination is not found", "Bunday yo'nalish topilmadi"},
 		{"Unknown command", "Noma'lum buyruq"},
 		{"Command accepted", "Buyruq qabul qilindi"},
 		{"Proxy error", "Proksi xatosi"},

libi2pd/Base.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2022, The PurpleI2P Project
+* Copyright (c) 2013-2023, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -28,6 +28,11 @@ namespace data
 		return T32;
 	}
 
+	bool IsBase32 (char ch)
+	{
+		return (ch >= 'a' && ch <= 'z') || (ch >= '2' && ch <= '7');
+	}	
+	
 	static void iT64Build(void);
 
 	/*
@@ -55,6 +60,11 @@ namespace data
 		return T64;
 	}
 
+	bool IsBase64 (char ch)
+	{
+		return (ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z') || (ch >= '0' && ch <= '9') || ch == '-' || ch == '~';
+	}	
+	
 	/*
 	* Reverse Substitution Table (built in run time)
 	*/
@@ -187,6 +197,9 @@ namespace data
 		else
 			return 0;
 
+		if(*InBuffer == P64)
+			return 0;
+
 		ps = (unsigned char *)(InBuffer + InCount - 1);
 		while ( *ps-- == P64 )
 			outCount--;
@@ -269,7 +282,7 @@ namespace data
 
 	size_t Base32ToByteStream (const char * inBuf, size_t len, uint8_t * outBuf, size_t outLen)
 	{
-		int tmp = 0, bits = 0;
+		unsigned int tmp = 0, bits = 0;
 		size_t ret = 0;
 		for (size_t i = 0; i < len; i++)
 		{
@@ -298,7 +311,7 @@ namespace data
 	size_t ByteStreamToBase32 (const uint8_t * inBuf, size_t len, char * outBuf, size_t outLen)
 	{
 		size_t ret = 0, pos = 1;
-		int bits = 8, tmp = inBuf[0];
+		unsigned int bits = 8, tmp = inBuf[0];
 		while (ret < outLen && (bits > 0 || pos < len))
 		{
 			if (bits < 5)

libi2pd/Base.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2020, The PurpleI2P Project
+* Copyright (c) 2013-2023, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -19,9 +19,11 @@ namespace data {
 	size_t Base64ToByteStream (const char * InBuffer, size_t InCount, uint8_t * OutBuffer, size_t len );
 	const char * GetBase32SubstitutionTable ();
 	const char * GetBase64SubstitutionTable ();
+	bool IsBase64 (char ch);
 
 	size_t Base32ToByteStream (const char * inBuf, size_t len, uint8_t * outBuf, size_t outLen);
 	size_t ByteStreamToBase32 (const uint8_t * InBuf, size_t len, char * outBuf, size_t outLen);
+	bool IsBase32 (char ch);
 
 	/**
 	 * Compute the size for a buffer to contain encoded base64 given that the size of the input is input_size bytes

libi2pd/CPU.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2020, The PurpleI2P Project
+* Copyright (c) 2013-2023, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -7,52 +7,62 @@
 */
 
 #include "CPU.h"
-#if defined(__x86_64__) || defined(__i386__)
-#include <cpuid.h>
-#endif
 #include "Log.h"
 
 #ifndef bit_AES
-#define bit_AES (1 << 25)
+	#define bit_AES (1 << 25)
 #endif
-#ifndef bit_AVX
-#define bit_AVX (1 << 28)
+
+#if defined(__GNUC__) && __GNUC__ < 6 && IS_X86
+	#include <cpuid.h>
 #endif
 
+#ifdef _MSC_VER
+	#include <intrin.h>
+#endif
 
 namespace i2p
 {
 namespace cpu
 {
 	bool aesni = false;
-	bool avx = false;
 
-	void Detect(bool AesSwitch, bool AvxSwitch, bool force)
+	inline bool cpu_support_aes()
 	{
-#if defined(__x86_64__) || defined(__i386__)
-		int info[4];
-		__cpuid(0, info[0], info[1], info[2], info[3]);
-		if (info[0] >= 0x00000001) {
-			__cpuid(0x00000001, info[0], info[1], info[2], info[3]);
-#if defined (_WIN32) && (WINVER == 0x0501) // WinXP
-			if (AesSwitch && force) { // only if forced
-#else
-			if ((info[2] & bit_AES && AesSwitch) || (AesSwitch && force)) {
+#if IS_X86
+#if defined(__clang__)
+#	if (__clang_major__ >= 6)
+		__builtin_cpu_init();
+#	endif
+		return __builtin_cpu_supports("aes");
+#elif (defined(__GNUC__) && __GNUC__ >= 6)
+		__builtin_cpu_init();
+		return __builtin_cpu_supports("aes");
+#elif (defined(__GNUC__) && __GNUC__ < 6)
+		int cpu_info[4];
+		bool flag = false;
+		__cpuid(0, cpu_info[0], cpu_info[1], cpu_info[2], cpu_info[3]);
+		if (cpu_info[0] >= 0x00000001) {
+			__cpuid(0x00000001, cpu_info[0], cpu_info[1], cpu_info[2], cpu_info[3]);
+			flag = ((cpu_info[2] & bit_AES) != 0);
+		}
+		return flag;
+#elif defined(_MSC_VER)
+		int cpu_info[4];
+		__cpuid(cpu_info, 1);
+		return ((cpu_info[2] & bit_AES) != 0);
 #endif
-				aesni = true;
-			}
-#if defined (_WIN32) && (WINVER == 0x0501) // WinXP
-			if (AvxSwitch && force) { // only if forced
-#else
-			if ((info[2] & bit_AVX && AvxSwitch) || (AvxSwitch && force)) {
 #endif
-				avx = true;
-			}
+		return false;
+	}
+
+	void Detect(bool AesSwitch, bool force)
+	{
+		if ((cpu_support_aes() && AesSwitch) || (AesSwitch && force)) {
+			aesni = true;
 		}
-#endif // defined(__x86_64__) || defined(__i386__)
 
 		LogPrint(eLogInfo, "AESNI ", (aesni ? "enabled" : "disabled"));
-		LogPrint(eLogInfo, "AVX ", (avx ? "enabled" : "disabled"));
 	}
 }
 }

libi2pd/CPU.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2020, The PurpleI2P Project
+* Copyright (c) 2013-2023, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -9,14 +9,31 @@
 #ifndef LIBI2PD_CPU_H
 #define LIBI2PD_CPU_H
 
+#if defined(_M_AMD64) || defined(__x86_64__) || defined(_M_IX86) || defined(__i386__)
+#	define IS_X86 1
+#	if defined(_M_AMD64) || defined(__x86_64__)
+#		define IS_X86_64 1
+#	else
+#		define IS_X86_64 0
+#	endif
+#else
+#	define IS_X86 0
+#	define IS_X86_64 0
+#endif
+
+#if defined(__AES__) && !defined(_MSC_VER) && IS_X86
+#	define SUPPORTS_AES 1
+#else
+#	define SUPPORTS_AES 0
+#endif
+
 namespace i2p
 {
 namespace cpu
 {
 	extern bool aesni;
-	extern bool avx;
 
-	void Detect(bool AesSwitch, bool AvxSwitch, bool force);
+	void Detect(bool AesSwitch, bool force);
 }
 }
 

libi2pd/Config.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -77,7 +77,7 @@ namespace config {
 		limits.add_options()
 			("limits.coresize", value<uint32_t>()->default_value(0),          "Maximum size of corefile in Kb (0 - use system limit)")
 			("limits.openfiles", value<uint16_t>()->default_value(0),         "Maximum number of open files (0 - use system default)")
-			("limits.transittunnels", value<uint16_t>()->default_value(5000), "Maximum active transit tunnels (default:5000)")
+			("limits.transittunnels", value<uint32_t>()->default_value(10000), "Maximum active transit tunnels (default:10000)")
 			("limits.zombies", value<double>()->default_value(0),             "Minimum percentage of successfully created tunnels under which tunnel cleanup is paused (default [%]: 0.00)")
 			("limits.ntcpsoft", value<uint16_t>()->default_value(0),          "Ignored")
 			("limits.ntcphard", value<uint16_t>()->default_value(0),          "Ignored")
@@ -193,7 +193,7 @@ namespace config {
 		options_description precomputation("Precomputation options");
 		precomputation.add_options()
 			("precomputation.elgamal",
-#if defined(__x86_64__)
+#if (defined(_M_AMD64) || defined(__x86_64__))
 				value<bool>()->default_value(false),
 #else
 				value<bool>()->default_value(true),
@@ -205,7 +205,7 @@ namespace config {
 		reseed.add_options()
 			("reseed.verify", value<bool>()->default_value(false),        "Verify .su3 signature")
 			("reseed.threshold", value<uint16_t>()->default_value(25),    "Minimum number of known routers before requesting reseed")
-			("reseed.floodfill", value<std::string>()->default_value(""), "Path to router info of floodfill to reseed from")
+			("reseed.floodfill", value<std::string>()->default_value(""), "Ignored. Always empty")
 			("reseed.file", value<std::string>()->default_value(""),      "Path to local .su3 file or HTTPS URL to reseed from")
 			("reseed.zipfile", value<std::string>()->default_value(""),   "Path to local .zip file to reseed from")
 			("reseed.proxy", value<std::string>()->default_value(""),     "url for reseed proxy, supports http/socks")
@@ -221,14 +221,16 @@ namespace config {
 				"https://reseed-pl.i2pd.xyz/,"
 				"https://www2.mk16.de/,"
 			    "https://i2p.ghativega.in/,"
-			    "https://i2p.novg.net/"
+			    "https://i2p.novg.net/,"
+            	"https://reseed.stormycloud.org/"
 			),                                                            "Reseed URLs, separated by comma")
 			("reseed.yggurls", value<std::string>()->default_value(
 				"http://[324:71e:281a:9ed3::ace]:7070/,"
 				"http://[301:65b9:c7cd:9a36::1]:18801/,"
 				"http://[320:8936:ec1a:31f1::216]/,"
 				"http://[306:3834:97b9:a00a::1]/,"
-				"http://[316:f9e0:f22e:a74f::216]/"
+				"http://[316:f9e0:f22e:a74f::216]/,"
+			    "http://[300:eaff:7fab:181b::e621]:7170"
 			),                                                            "Reseed URLs through the Yggdrasil, separated by comma")
 		;
 
@@ -308,7 +310,7 @@ namespace config {
 		options_description cpuext("CPU encryption extensions options");
 		cpuext.add_options()
 			("cpuext.aesni", bool_switch()->default_value(true),                     "Use auto detection for AESNI CPU extensions. If false, AESNI will be not used")
-			("cpuext.avx", bool_switch()->default_value(true),                       "Use auto detection for AVX CPU extensions. If false, AVX will be not used")
+			("cpuext.avx", bool_switch()->default_value(false),                      "Deprecated option")
 			("cpuext.force", bool_switch()->default_value(false),                    "Force usage of CPU extensions. Useful when cpuinfo is not available on virtual machines")
 		;
 

libi2pd/Crypto.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2022, The PurpleI2P Project
+* Copyright (c) 2013-2023, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -28,6 +28,7 @@
 #include "I2PEndian.h"
 #include "Log.h"
 
+
 namespace i2p
 {
 namespace crypto
@@ -159,7 +160,7 @@ namespace crypto
 
 // DH/ElGamal
 
-#if !defined(__x86_64__)
+#if !IS_X86_64
 	const int ELGAMAL_SHORT_EXPONENT_NUM_BITS = 226;
 	const int ELGAMAL_SHORT_EXPONENT_NUM_BYTES = ELGAMAL_SHORT_EXPONENT_NUM_BITS/8+1;
 #endif
@@ -361,7 +362,7 @@ namespace crypto
 		BIGNUM * b1 = BN_CTX_get (ctx);
 		BIGNUM * b = BN_CTX_get (ctx);
 		// select random k
-#if defined(__x86_64__)
+#if IS_X86_64
 		BN_rand (k, ELGAMAL_FULL_EXPONENT_NUM_BITS, -1, 1); // full exponent for x64
 #else
 		BN_rand (k, ELGAMAL_SHORT_EXPONENT_NUM_BITS, -1, 1); // short exponent of 226 bits
@@ -428,7 +429,7 @@ namespace crypto
 
 	void GenerateElGamalKeyPair (uint8_t * priv, uint8_t * pub)
 	{
-#if defined(__x86_64__) || defined(__i386__) || defined(_MSC_VER)
+#if IS_X86 || defined(_MSC_VER)
 		RAND_bytes (priv, 256);
 #else
 		// lower 226 bits (28 bytes and 2 bits) only. short exponent
@@ -555,7 +556,7 @@ namespace crypto
 	}
 
 // AES
-#if defined(__AES__) && (defined(__x86_64__) || defined(__i386__))
+#if SUPPORTS_AES
 	#define KeyExpansion256(round0,round1) \
 		"pshufd $0xff, %%xmm2, %%xmm2 \n" \
 		"movaps %%xmm1, %%xmm4 \n" \
@@ -580,7 +581,7 @@ namespace crypto
 		"movaps %%xmm3, "#round1"(%[sched]) \n"
 #endif
 
-#if defined(__AES__) && (defined(__x86_64__) || defined(__i386__))
+#if SUPPORTS_AES
 	void ECBCryptoAESNI::ExpandKey (const AESKey& key)
 	{
 		__asm__
@@ -621,7 +622,7 @@ namespace crypto
 #endif
 
 
-#if defined(__AES__) && (defined(__x86_64__) || defined(__i386__))
+#if SUPPORTS_AES
 	#define EncryptAES256(sched) \
 		"pxor (%["#sched"]), %%xmm0 \n" \
 		"aesenc	16(%["#sched"]), %%xmm0 \n" \
@@ -642,16 +643,18 @@ namespace crypto
 
 	void ECBEncryption::Encrypt (const ChipherBlock * in, ChipherBlock * out)
 	{
-#if defined(__AES__) && (defined(__x86_64__) || defined(__i386__))
+#if SUPPORTS_AES
 		if(i2p::cpu::aesni)
 		{
 			__asm__
-				(
-					"movups (%[in]), %%xmm0 \n"
-					EncryptAES256(sched)
-					"movups %%xmm0, (%[out]) \n"
-					: : [sched]"r"(GetKeySchedule ()), [in]"r"(in), [out]"r"(out) : "%xmm0", "memory"
-					);
+			(
+				"movups (%[in]), %%xmm0 \n"
+				EncryptAES256(sched)
+				"movups %%xmm0, (%[out]) \n"
+				:
+				: [sched]"r"(GetKeySchedule ()), [in]"r"(in), [out]"r"(out)
+				: "%xmm0", "memory"
+			);
 		}
 		else
 #endif
@@ -660,7 +663,7 @@ namespace crypto
 		}
 	}
 
-#if defined(__AES__) && (defined(__x86_64__) || defined(__i386__))
+#if SUPPORTS_AES
 	#define DecryptAES256(sched) \
 		"pxor 224(%["#sched"]), %%xmm0 \n" \
 		"aesdec	208(%["#sched"]), %%xmm0 \n" \
@@ -681,16 +684,18 @@ namespace crypto
 
 	void ECBDecryption::Decrypt (const ChipherBlock * in, ChipherBlock * out)
 	{
-#if defined(__AES__) && (defined(__x86_64__) || defined(__i386__))
+#if SUPPORTS_AES
 		if(i2p::cpu::aesni)
 		{
 			__asm__
-				(
-					"movups (%[in]), %%xmm0 \n"
-					DecryptAES256(sched)
-					"movups %%xmm0, (%[out]) \n"
-					: : [sched]"r"(GetKeySchedule ()), [in]"r"(in), [out]"r"(out) : "%xmm0", "memory"
-					);
+			(
+				"movups (%[in]), %%xmm0 \n"
+				DecryptAES256(sched)
+				"movups %%xmm0, (%[out]) \n"
+				:
+				: [sched]"r"(GetKeySchedule ()), [in]"r"(in), [out]"r"(out)
+				: "%xmm0", "memory"
+			);
 		}
 		else
 #endif
@@ -699,7 +704,7 @@ namespace crypto
 		}
 	}
 
-#if defined(__AES__) && (defined(__x86_64__) || defined(__i386__))
+#if SUPPORTS_AES
 	#define CallAESIMC(offset) \
 		"movaps "#offset"(%[shed]), %%xmm0 \n" \
 		"aesimc %%xmm0, %%xmm0 \n" \
@@ -708,7 +713,7 @@ namespace crypto
 
 	void ECBEncryption::SetKey (const AESKey& key)
 	{
-#if defined(__AES__) && (defined(__x86_64__) || defined(__i386__))
+#if SUPPORTS_AES
 		if(i2p::cpu::aesni)
 		{
 			ExpandKey (key);
@@ -722,28 +727,30 @@ namespace crypto
 
 	void ECBDecryption::SetKey (const AESKey& key)
 	{
-#if defined(__AES__) && (defined(__x86_64__) || defined(__i386__))
+#if SUPPORTS_AES
 		if(i2p::cpu::aesni)
 		{
 			ExpandKey (key); // expand encryption key first
 			// then invert it using aesimc
 			__asm__
-				(
-					CallAESIMC(16)
-					CallAESIMC(32)
-					CallAESIMC(48)
-					CallAESIMC(64)
-					CallAESIMC(80)
-					CallAESIMC(96)
-					CallAESIMC(112)
-					CallAESIMC(128)
-					CallAESIMC(144)
-					CallAESIMC(160)
-					CallAESIMC(176)
-					CallAESIMC(192)
-					CallAESIMC(208)
-					: : [shed]"r"(GetKeySchedule ()) : "%xmm0", "memory"
-					);
+			(
+				CallAESIMC(16)
+				CallAESIMC(32)
+				CallAESIMC(48)
+				CallAESIMC(64)
+				CallAESIMC(80)
+				CallAESIMC(96)
+				CallAESIMC(112)
+				CallAESIMC(128)
+				CallAESIMC(144)
+				CallAESIMC(160)
+				CallAESIMC(176)
+				CallAESIMC(192)
+				CallAESIMC(208)
+				:
+				: [shed]"r"(GetKeySchedule ())
+				: "%xmm0", "memory"
+			);
 		}
 		else
 #endif
@@ -754,28 +761,28 @@ namespace crypto
 
 	void CBCEncryption::Encrypt (int numBlocks, const ChipherBlock * in, ChipherBlock * out)
 	{
-#if defined(__AES__) && (defined(__x86_64__) || defined(__i386__))
+#if SUPPORTS_AES
 		if(i2p::cpu::aesni)
 		{
 			__asm__
-				(
-					"movups (%[iv]), %%xmm1 \n"
-					"1: \n"
-					"movups (%[in]), %%xmm0 \n"
-					"pxor %%xmm1, %%xmm0 \n"
-					EncryptAES256(sched)
-					"movaps %%xmm0, %%xmm1 \n"
-					"movups %%xmm0, (%[out]) \n"
-					"add $16, %[in] \n"
-					"add $16, %[out] \n"
-					"dec %[num] \n"
-					"jnz 1b \n"
-					"movups %%xmm1, (%[iv]) \n"
-					:
-					: [iv]"r"((uint8_t *)m_LastBlock), [sched]"r"(m_ECBEncryption.GetKeySchedule ()),
-						[in]"r"(in), [out]"r"(out), [num]"r"(numBlocks)
-					: "%xmm0", "%xmm1", "cc", "memory"
-					);
+			(
+				"movups (%[iv]), %%xmm1 \n"
+				"1: \n"
+				"movups (%[in]), %%xmm0 \n"
+				"pxor %%xmm1, %%xmm0 \n"
+				EncryptAES256(sched)
+				"movaps %%xmm0, %%xmm1 \n"
+				"movups %%xmm0, (%[out]) \n"
+				"add $16, %[in] \n"
+				"add $16, %[out] \n"
+				"dec %[num] \n"
+				"jnz 1b \n"
+				"movups %%xmm1, (%[iv]) \n"
+				:
+				: [iv]"r"((uint8_t *)m_LastBlock), [sched]"r"(m_ECBEncryption.GetKeySchedule ()),
+					[in]"r"(in), [out]"r"(out), [num]"r"(numBlocks)
+				: "%xmm0", "%xmm1", "cc", "memory"
+			);
 		}
 		else
 #endif
@@ -799,22 +806,22 @@ namespace crypto
 
 	void CBCEncryption::Encrypt (const uint8_t * in, uint8_t * out)
 	{
-#if defined(__AES__) && (defined(__x86_64__) || defined(__i386__))
+#if SUPPORTS_AES
 		if(i2p::cpu::aesni)
 		{
 			__asm__
-				(
-					"movups (%[iv]), %%xmm1 \n"
-					"movups (%[in]), %%xmm0 \n"
-					"pxor %%xmm1, %%xmm0 \n"
-					EncryptAES256(sched)
-					"movups %%xmm0, (%[out]) \n"
-					"movups %%xmm0, (%[iv]) \n"
-					:
-					: [iv]"r"((uint8_t *)m_LastBlock), [sched]"r"(m_ECBEncryption.GetKeySchedule ()),
-						[in]"r"(in), [out]"r"(out)
-					: "%xmm0", "%xmm1", "memory"
-					);
+			(
+				"movups (%[iv]), %%xmm1 \n"
+				"movups (%[in]), %%xmm0 \n"
+				"pxor %%xmm1, %%xmm0 \n"
+				EncryptAES256(sched)
+				"movups %%xmm0, (%[out]) \n"
+				"movups %%xmm0, (%[iv]) \n"
+				:
+				: [iv]"r"((uint8_t *)m_LastBlock), [sched]"r"(m_ECBEncryption.GetKeySchedule ()),
+					[in]"r"(in), [out]"r"(out)
+				: "%xmm0", "%xmm1", "memory"
+			);
 		}
 		else
 #endif
@@ -823,29 +830,29 @@ namespace crypto
 
 	void CBCDecryption::Decrypt (int numBlocks, const ChipherBlock * in, ChipherBlock * out)
 	{
-#if defined(__AES__) && (defined(__x86_64__) || defined(__i386__))
+#if SUPPORTS_AES
 		if(i2p::cpu::aesni)
 		{
 			__asm__
-				(
-					"movups (%[iv]), %%xmm1 \n"
-					"1: \n"
-					"movups (%[in]), %%xmm0 \n"
-					"movaps %%xmm0, %%xmm2 \n"
-					DecryptAES256(sched)
-					"pxor %%xmm1, %%xmm0 \n"
-					"movups %%xmm0, (%[out]) \n"
-					"movaps %%xmm2, %%xmm1 \n"
-					"add $16, %[in] \n"
-					"add $16, %[out] \n"
-					"dec %[num] \n"
-					"jnz 1b \n"
-					"movups %%xmm1, (%[iv]) \n"
-					:
-					: [iv]"r"((uint8_t *)m_IV), [sched]"r"(m_ECBDecryption.GetKeySchedule ()),
-						[in]"r"(in), [out]"r"(out), [num]"r"(numBlocks)
-					: "%xmm0", "%xmm1", "%xmm2", "cc", "memory"
-					);
+			(
+				"movups (%[iv]), %%xmm1 \n"
+				"1: \n"
+				"movups (%[in]), %%xmm0 \n"
+				"movaps %%xmm0, %%xmm2 \n"
+				DecryptAES256(sched)
+				"pxor %%xmm1, %%xmm0 \n"
+				"movups %%xmm0, (%[out]) \n"
+				"movaps %%xmm2, %%xmm1 \n"
+				"add $16, %[in] \n"
+				"add $16, %[out] \n"
+				"dec %[num] \n"
+				"jnz 1b \n"
+				"movups %%xmm1, (%[iv]) \n"
+				:
+				: [iv]"r"((uint8_t *)m_IV), [sched]"r"(m_ECBDecryption.GetKeySchedule ()),
+					[in]"r"(in), [out]"r"(out), [num]"r"(numBlocks)
+				: "%xmm0", "%xmm1", "%xmm2", "cc", "memory"
+			);
 		}
 		else
 #endif
@@ -869,22 +876,22 @@ namespace crypto
 
 	void CBCDecryption::Decrypt (const uint8_t * in, uint8_t * out)
 	{
-#if defined(__AES__) && (defined(__x86_64__) || defined(__i386__))
+#if SUPPORTS_AES
 		if(i2p::cpu::aesni)
 		{
 			__asm__
-				(
-					"movups (%[iv]), %%xmm1 \n"
-					"movups (%[in]), %%xmm0 \n"
-					"movups %%xmm0, (%[iv]) \n"
-					DecryptAES256(sched)
-					"pxor %%xmm1, %%xmm0 \n"
-					"movups %%xmm0, (%[out]) \n"
-					:
-					: [iv]"r"((uint8_t *)m_IV), [sched]"r"(m_ECBDecryption.GetKeySchedule ()),
-						[in]"r"(in), [out]"r"(out)
-					: "%xmm0", "%xmm1", "memory"
-					);
+			(
+				"movups (%[iv]), %%xmm1 \n"
+				"movups (%[in]), %%xmm0 \n"
+				"movups %%xmm0, (%[iv]) \n"
+				DecryptAES256(sched)
+				"pxor %%xmm1, %%xmm0 \n"
+				"movups %%xmm0, (%[out]) \n"
+				:
+				: [iv]"r"((uint8_t *)m_IV), [sched]"r"(m_ECBDecryption.GetKeySchedule ()),
+					[in]"r"(in), [out]"r"(out)
+				: "%xmm0", "%xmm1", "memory"
+			);
 		}
 		else
 #endif
@@ -893,34 +900,34 @@ namespace crypto
 
 	void TunnelEncryption::Encrypt (const uint8_t * in, uint8_t * out)
 	{
-#if defined(__AES__) && (defined(__x86_64__) || defined(__i386__))
+#if SUPPORTS_AES
 		if(i2p::cpu::aesni)
 		{
 			__asm__
-				(
-					// encrypt IV
-					"movups (%[in]), %%xmm0 \n"
-					EncryptAES256(sched_iv)
-					"movaps %%xmm0, %%xmm1 \n"
-					// double IV encryption
-					EncryptAES256(sched_iv)
-					"movups %%xmm0, (%[out]) \n"
-					// encrypt data, IV is xmm1
-					"1: \n"
-					"add $16, %[in] \n"
-					"add $16, %[out] \n"
-					"movups (%[in]), %%xmm0 \n"
-					"pxor %%xmm1, %%xmm0 \n"
-					EncryptAES256(sched_l)
-					"movaps %%xmm0, %%xmm1 \n"
-					"movups %%xmm0, (%[out]) \n"
-					"dec %[num] \n"
-					"jnz 1b \n"
-					:
-					: [sched_iv]"r"(m_IVEncryption.GetKeySchedule ()), [sched_l]"r"(m_LayerEncryption.ECB().GetKeySchedule ()),
-						[in]"r"(in), [out]"r"(out), [num]"r"(63) // 63 blocks = 1008 bytes
-					: "%xmm0", "%xmm1", "cc", "memory"
-					);
+			(
+				// encrypt IV
+				"movups (%[in]), %%xmm0 \n"
+				EncryptAES256(sched_iv)
+				"movaps %%xmm0, %%xmm1 \n"
+				// double IV encryption
+				EncryptAES256(sched_iv)
+				"movups %%xmm0, (%[out]) \n"
+				// encrypt data, IV is xmm1
+				"1: \n"
+				"add $16, %[in] \n"
+				"add $16, %[out] \n"
+				"movups (%[in]), %%xmm0 \n"
+				"pxor %%xmm1, %%xmm0 \n"
+				EncryptAES256(sched_l)
+				"movaps %%xmm0, %%xmm1 \n"
+				"movups %%xmm0, (%[out]) \n"
+				"dec %[num] \n"
+				"jnz 1b \n"
+				:
+				: [sched_iv]"r"(m_IVEncryption.GetKeySchedule ()), [sched_l]"r"(m_LayerEncryption.ECB().GetKeySchedule ()),
+					[in]"r"(in), [out]"r"(out), [num]"r"(63) // 63 blocks = 1008 bytes
+				: "%xmm0", "%xmm1", "cc", "memory"
+			);
 		}
 		else
 #endif
@@ -934,35 +941,35 @@ namespace crypto
 
 	void TunnelDecryption::Decrypt (const uint8_t * in, uint8_t * out)
 	{
-#if defined(__AES__) && (defined(__x86_64__) || defined(__i386__))
+#if SUPPORTS_AES
 		if(i2p::cpu::aesni)
 		{
 			__asm__
-				(
-					// decrypt IV
-					"movups	(%[in]), %%xmm0 \n"
-					DecryptAES256(sched_iv)
-					"movaps %%xmm0, %%xmm1 \n"
-					// double IV encryption
-					DecryptAES256(sched_iv)
-					"movups %%xmm0, (%[out]) \n"
-					// decrypt data, IV is xmm1
-					"1: \n"
-					"add $16, %[in] \n"
-					"add $16, %[out] \n"
-					"movups (%[in]), %%xmm0 \n"
-					"movaps %%xmm0, %%xmm2 \n"
-					DecryptAES256(sched_l)
-					"pxor %%xmm1, %%xmm0 \n"
-					"movups %%xmm0, (%[out]) \n"
-					"movaps %%xmm2, %%xmm1 \n"
-					"dec %[num] \n"
-					"jnz 1b \n"
-					:
-					: [sched_iv]"r"(m_IVDecryption.GetKeySchedule ()), [sched_l]"r"(m_LayerDecryption.ECB().GetKeySchedule ()),
-						[in]"r"(in), [out]"r"(out), [num]"r"(63) // 63 blocks = 1008 bytes
-					: "%xmm0", "%xmm1", "%xmm2", "cc", "memory"
-					);
+			(
+				// decrypt IV
+				"movups	(%[in]), %%xmm0 \n"
+				DecryptAES256(sched_iv)
+				"movaps %%xmm0, %%xmm1 \n"
+				// double IV encryption
+				DecryptAES256(sched_iv)
+				"movups %%xmm0, (%[out]) \n"
+				// decrypt data, IV is xmm1
+				"1: \n"
+				"add $16, %[in] \n"
+				"add $16, %[out] \n"
+				"movups (%[in]), %%xmm0 \n"
+				"movaps %%xmm0, %%xmm2 \n"
+				DecryptAES256(sched_l)
+				"pxor %%xmm1, %%xmm0 \n"
+				"movups %%xmm0, (%[out]) \n"
+				"movaps %%xmm2, %%xmm1 \n"
+				"dec %[num] \n"
+				"jnz 1b \n"
+				:
+				: [sched_iv]"r"(m_IVDecryption.GetKeySchedule ()), [sched_l]"r"(m_LayerDecryption.ECB().GetKeySchedule ()),
+					[in]"r"(in), [out]"r"(out), [num]"r"(63) // 63 blocks = 1008 bytes
+				: "%xmm0", "%xmm1", "%xmm2", "cc", "memory"
+			);
 		}
 		else
 #endif
@@ -991,7 +998,7 @@ namespace crypto
 			EVP_EncryptInit_ex(ctx, NULL, NULL, key, nonce);
 			EVP_EncryptUpdate(ctx, NULL, &outlen, ad, adLen);
 			EVP_EncryptUpdate(ctx, buf, &outlen, msg, msgLen);
-			EVP_EncryptFinal_ex(ctx, buf, &outlen);
+			EVP_EncryptFinal_ex(ctx, buf + outlen, &outlen);
 			EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_GET_TAG, 16, buf + msgLen);
 		}
 		else
@@ -1285,9 +1292,9 @@ namespace crypto
 		}
 	}*/
 
-	void InitCrypto (bool precomputation, bool aesni, bool avx, bool force)
+	void InitCrypto (bool precomputation, bool aesni, bool force)
 	{
-		i2p::cpu::Detect (aesni, avx, force);
+		i2p::cpu::Detect (aesni, force);
 #if LEGACY_OPENSSL
 		SSL_library_init ();
 #endif
@@ -1297,7 +1304,7 @@ namespace crypto
 		CRYPTO_set_locking_callback (OpensslLockingCallback);*/
 		if (precomputation)
 		{
-#if defined(__x86_64__)
+#if IS_X86_64
 			g_ElggTable = new BIGNUM * [ELGAMAL_FULL_EXPONENT_NUM_BYTES][255];
 			PrecalculateElggTable (g_ElggTable, ELGAMAL_FULL_EXPONENT_NUM_BYTES);
 #else
@@ -1312,7 +1319,7 @@ namespace crypto
 		if (g_ElggTable)
 		{
 			DestroyElggTable (g_ElggTable,
-#if defined(__x86_64__)
+#if IS_X86_64
 				ELGAMAL_FULL_EXPONENT_NUM_BYTES
 #else
 				ELGAMAL_SHORT_EXPONENT_NUM_BYTES

libi2pd/Crypto.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2022, The PurpleI2P Project
+* Copyright (c) 2013-2023, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -150,7 +150,7 @@ namespace crypto
 	};
 
 
-#ifdef __AES__
+#if SUPPORTS_AES
 	class ECBCryptoAESNI
 	{
 		public:
@@ -167,7 +167,7 @@ namespace crypto
 	};
 #endif
 
-#ifdef __AES__
+#if SUPPORTS_AES
 	class ECBEncryption: public ECBCryptoAESNI
 #else
 	class ECBEncryption
@@ -183,7 +183,7 @@ namespace crypto
 		AES_KEY m_Key;
 	};
 
-#ifdef __AES__
+#if SUPPORTS_AES
 	class ECBDecryption: public ECBCryptoAESNI
 #else
 	class ECBDecryption
@@ -307,7 +307,7 @@ namespace crypto
 	void InitNoiseIKState (NoiseSymmetricState& state, const uint8_t * pub); // Noise_IK (ratchets)
 
 // init and terminate
-	void InitCrypto (bool precomputation, bool aesni, bool avx, bool force);
+	void InitCrypto (bool precomputation, bool aesni, bool force);
 	void TerminateCrypto ();
 }
 }

libi2pd/Datagram.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -19,7 +19,7 @@ namespace i2p
 namespace datagram
 {
 	DatagramDestination::DatagramDestination (std::shared_ptr<i2p::client::ClientDestination> owner, bool gzip):
-		m_Owner (owner), m_Receiver (nullptr), m_RawReceiver (nullptr), m_Gzip (gzip)
+		m_Owner (owner), m_DefaultReceiver (nullptr), m_DefaultRawReceiver (nullptr), m_Gzip (gzip)
 	{
 		if (m_Gzip)
 			m_Deflator.reset (new i2p::data::GzipDeflator);
@@ -119,19 +119,79 @@ namespace datagram
 
 	void DatagramDestination::HandleRawDatagram (uint16_t fromPort, uint16_t toPort, const uint8_t * buf, size_t len)
 	{
-		if (m_RawReceiver)
-			m_RawReceiver (fromPort, toPort, buf, len);
+		auto r = FindRawReceiver(toPort);
+
+		if (r)
+			r (fromPort, toPort, buf, len);
 		else
 			LogPrint (eLogWarning, "DatagramDestination: no receiver for raw datagram");
 	}
 
+	void DatagramDestination::SetReceiver (const Receiver& receiver, uint16_t port)
+	{
+		std::lock_guard<std::mutex> lock(m_ReceiversMutex);
+		m_ReceiversByPorts[port] = receiver;
+		if (!m_DefaultReceiver) {
+			m_DefaultReceiver = receiver;
+			m_DefaultReceiverPort = port;
+		}
+	}
+
+	void DatagramDestination::ResetReceiver (uint16_t port)
+	{
+		std::lock_guard<std::mutex> lock(m_ReceiversMutex);
+		m_ReceiversByPorts.erase (port);
+		if (m_DefaultReceiverPort == port) {
+			m_DefaultReceiver = nullptr;
+			m_DefaultReceiverPort = 0;
+		}
+	}
+
+
+	void DatagramDestination::SetRawReceiver (const RawReceiver& receiver, uint16_t port)
+	{
+		std::lock_guard<std::mutex> lock(m_RawReceiversMutex);
+		m_RawReceiversByPorts[port] = receiver;
+		if (!m_DefaultRawReceiver) {
+			m_DefaultRawReceiver = receiver;
+			m_DefaultRawReceiverPort = port;
+		}
+	}
+
+	void DatagramDestination::ResetRawReceiver (uint16_t port)
+	{
+		std::lock_guard<std::mutex> lock(m_RawReceiversMutex);
+		m_RawReceiversByPorts.erase (port);
+		if (m_DefaultRawReceiverPort == port) {
+			m_DefaultRawReceiver = nullptr;
+			m_DefaultRawReceiverPort = 0;
+		}
+	}
+
+
 	DatagramDestination::Receiver DatagramDestination::FindReceiver(uint16_t port)
 	{
 		std::lock_guard<std::mutex> lock(m_ReceiversMutex);
-		Receiver r = m_Receiver;
+		Receiver r = nullptr;
 		auto itr = m_ReceiversByPorts.find(port);
 		if (itr != m_ReceiversByPorts.end())
 			r = itr->second;
+		else {
+			r = m_DefaultReceiver;
+		}
+		return r;
+	}
+
+	DatagramDestination::RawReceiver DatagramDestination::FindRawReceiver(uint16_t port)
+	{
+		std::lock_guard<std::mutex> lock(m_RawReceiversMutex);
+		RawReceiver r = nullptr;
+		auto itr = m_RawReceiversByPorts.find(port);
+		if (itr != m_RawReceiversByPorts.end())
+			r = itr->second;
+		else {
+			r = m_DefaultRawReceiver;
+		}
 		return r;
 	}
 

libi2pd/Datagram.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2022, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -126,14 +126,12 @@ namespace datagram
 
 			void HandleDataMessagePayload (uint16_t fromPort, uint16_t toPort, const uint8_t * buf, size_t len, bool isRaw = false);
 
-			void SetReceiver (const Receiver& receiver) { m_Receiver = receiver; };
-			void ResetReceiver () { m_Receiver = nullptr; };
 
-			void SetReceiver (const Receiver& receiver, uint16_t port) { std::lock_guard<std::mutex> lock(m_ReceiversMutex); m_ReceiversByPorts[port] = receiver; };
-			void ResetReceiver (uint16_t port) { std::lock_guard<std::mutex> lock(m_ReceiversMutex); m_ReceiversByPorts.erase (port); };
+			void SetReceiver (const Receiver& receiver, uint16_t port);
+			void ResetReceiver (uint16_t port);
 
-			void SetRawReceiver (const RawReceiver& receiver) { m_RawReceiver = receiver; };
-			void ResetRawReceiver () { m_RawReceiver = nullptr; };
+			void SetRawReceiver (const RawReceiver& receiver, uint16_t port);
+			void ResetRawReceiver (uint16_t port);
 
 			std::shared_ptr<DatagramSession::Info> GetInfoForRemote(const i2p::data::IdentHash & remote);
 
@@ -150,20 +148,26 @@ namespace datagram
 			void HandleDatagram (uint16_t fromPort, uint16_t toPort, uint8_t *const& buf, size_t len);
 			void HandleRawDatagram (uint16_t fromPort, uint16_t toPort, const uint8_t * buf, size_t len);
 
-			/** find a receiver by port, if none by port is found try default receiever, otherwise returns nullptr */
 			Receiver FindReceiver(uint16_t port);
+			RawReceiver FindRawReceiver(uint16_t port);
 
 		private:
 
 			std::shared_ptr<i2p::client::ClientDestination> m_Owner;
-			Receiver m_Receiver; // default
-			RawReceiver m_RawReceiver; // default
-			bool m_Gzip; // gzip compression of data messages
+
 			std::mutex m_SessionsMutex;
 			std::map<i2p::data::IdentHash, DatagramSession_ptr > m_Sessions;
+
+			Receiver m_DefaultReceiver;
+			RawReceiver m_DefaultRawReceiver;
+			uint16_t m_DefaultReceiverPort;
+			uint16_t m_DefaultRawReceiverPort;
 			std::mutex m_ReceiversMutex;
-			std::map<uint16_t, Receiver> m_ReceiversByPorts;
+			std::mutex m_RawReceiversMutex;
+			std::unordered_map<uint16_t, Receiver> m_ReceiversByPorts;
+			std::unordered_map<uint16_t, RawReceiver> m_RawReceiversByPorts;
 
+			bool m_Gzip; // gzip compression of data messages
 			i2p::data::GzipInflator m_Inflator;
 			std::unique_ptr<i2p::data::GzipDeflator> m_Deflator;
 			std::vector<uint8_t> m_From, m_Signature;

libi2pd/Destination.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -367,9 +367,12 @@ namespace client
 				HandleDataMessage (payload, len);
 			break;
 			case eI2NPDeliveryStatus:
-				// we assume tunnel tests non-encrypted
 				HandleDeliveryStatusMessage (bufbe32toh (payload + DELIVERY_STATUS_MSGID_OFFSET));
 			break;
+			case eI2NPTunnelTest:
+				if (m_Pool)
+					m_Pool->ProcessTunnelTest (bufbe32toh (payload + TUNNEL_TEST_MSGID_OFFSET), bufbe64toh (payload + TUNNEL_TEST_TIMESTAMP_OFFSET));
+			break;
 			case eI2NPDatabaseStore:
 				HandleDatabaseStoreMessage (payload, len);
 			break;
@@ -407,6 +410,7 @@ namespace client
 		}
 		i2p::data::IdentHash key (buf + DATABASE_STORE_KEY_OFFSET);
 		std::shared_ptr<i2p::data::LeaseSet> leaseSet;
+		std::shared_ptr<LeaseSetRequest> request;
 		switch (buf[DATABASE_STORE_TYPE_OFFSET])
 		{
 			case i2p::data::NETDB_STORE_TYPE_LEASESET: // 1
@@ -462,34 +466,59 @@ namespace client
 			case i2p::data::NETDB_STORE_TYPE_ENCRYPTED_LEASESET2: // 5
 			{
 				auto it2 = m_LeaseSetRequests.find (key);
-				if (it2 != m_LeaseSetRequests.end () && it2->second->requestedBlindedKey)
-				{
-					auto ls2 = std::make_shared<i2p::data::LeaseSet2> (buf + offset, len - offset,
-						it2->second->requestedBlindedKey, m_LeaseSetPrivKey ? ((const uint8_t *)*m_LeaseSetPrivKey) : nullptr , GetPreferredCryptoType ());
-					if (ls2->IsValid () && !ls2->IsExpired ())
+				if (it2 != m_LeaseSetRequests.end ())
+				{	
+					request = it2->second;
+					m_LeaseSetRequests.erase (it2);
+					if (request->requestedBlindedKey)
 					{
-						leaseSet = ls2;
-						std::lock_guard<std::mutex> lock(m_RemoteLeaseSetsMutex);
-						m_RemoteLeaseSets[ls2->GetIdentHash ()] = ls2; // ident is not key
-						m_RemoteLeaseSets[key] = ls2; // also store as key for next lookup
+						auto ls2 = std::make_shared<i2p::data::LeaseSet2> (buf + offset, len - offset,
+							request->requestedBlindedKey, m_LeaseSetPrivKey ? ((const uint8_t *)*m_LeaseSetPrivKey) : nullptr , GetPreferredCryptoType ());
+						if (ls2->IsValid () && !ls2->IsExpired ())
+						{
+							leaseSet = ls2;
+							std::lock_guard<std::mutex> lock(m_RemoteLeaseSetsMutex);
+							m_RemoteLeaseSets[ls2->GetIdentHash ()] = ls2; // ident is not key
+							m_RemoteLeaseSets[key] = ls2; // also store as key for next lookup
+						}
+						else
+							LogPrint (eLogError, "Destination: New remote encrypted LeaseSet2 failed");
 					}
 					else
-						LogPrint (eLogError, "Destination: New remote encrypted LeaseSet2 failed");
+					{
+						// publishing verification doesn't have requestedBlindedKey
+						auto localLeaseSet = GetLeaseSetMt ();
+						if (localLeaseSet->GetStoreHash () == key)
+						{	
+							auto ls = std::make_shared<i2p::data::LeaseSet2> (i2p::data::NETDB_STORE_TYPE_ENCRYPTED_LEASESET2, 
+								localLeaseSet->GetBuffer (), localLeaseSet->GetBufferLen (), false);
+							leaseSet = ls;	
+						}	
+						else
+							LogPrint (eLogWarning, "Destination: Encrypted LeaseSet2 received for request without blinded key");
+					}	
 				}
 				else
-					LogPrint (eLogInfo, "Destination: Couldn't find request for encrypted LeaseSet2");
+					LogPrint (eLogWarning, "Destination: Couldn't find request for encrypted LeaseSet2");
 				break;
 			}
 			default:
 				LogPrint (eLogError, "Destination: Unexpected client's DatabaseStore type ", buf[DATABASE_STORE_TYPE_OFFSET], ", dropped");
 		}
 
-		auto it1 = m_LeaseSetRequests.find (key);
-		if (it1 != m_LeaseSetRequests.end ())
+		if (!request)
+		{	
+			auto it1 = m_LeaseSetRequests.find (key);
+			if (it1 != m_LeaseSetRequests.end ())
+			{	
+				request = it1->second;
+				m_LeaseSetRequests.erase (it1);
+			}	
+		}	
+		if (request)
 		{
-			it1->second->requestTimeoutTimer.cancel ();
-			if (it1->second) it1->second->Complete (leaseSet);
-			m_LeaseSetRequests.erase (it1);
+			request->requestTimeoutTimer.cancel ();
+			request->Complete (leaseSet);
 		}
 	}
 
@@ -502,38 +531,43 @@ namespace client
 		if (it != m_LeaseSetRequests.end ())
 		{
 			auto request = it->second;
-			bool found = false;
-			if (request->excluded.size () < MAX_NUM_FLOODFILLS_PER_REQUEST)
+			for (int i = 0; i < num; i++)
 			{
-				for (int i = 0; i < num; i++)
+				i2p::data::IdentHash peerHash (buf + 33 + i*32);
+				if (!request->excluded.count (peerHash) && !i2p::data::netdb.FindRouter (peerHash))
 				{
-					i2p::data::IdentHash peerHash (buf + 33 + i*32);
-					if (!request->excluded.count (peerHash) && !i2p::data::netdb.FindRouter (peerHash))
-					{
-						LogPrint (eLogInfo, "Destination: Found new floodfill, request it");
-						i2p::data::netdb.RequestDestination (peerHash, nullptr, false); // through exploratory
-					}
+					LogPrint (eLogInfo, "Destination: Found new floodfill, request it");
+					i2p::data::netdb.RequestDestination (peerHash, nullptr, false); // through exploratory
 				}
-
-				auto floodfill = i2p::data::netdb.GetClosestFloodfill (key, request->excluded);
-				if (floodfill)
-				{
-					LogPrint (eLogInfo, "Destination: Requesting ", key.ToBase64 (), " at ", floodfill->GetIdentHash ().ToBase64 ());
-					if (SendLeaseSetRequest (key, floodfill, request))
-						found = true;
-				}
-			}
-			if (!found)
-			{
-				LogPrint (eLogInfo, "Destination: ", key.ToBase64 (), " was not found on ", MAX_NUM_FLOODFILLS_PER_REQUEST, " floodfills");
-				request->Complete (nullptr);
-				m_LeaseSetRequests.erase (key);
 			}
+			SendNextLeaseSetRequest (key, request);
 		}
 		else
 			LogPrint (eLogWarning, "Destination: Request for ", key.ToBase64 (), " not found");
 	}
 
+	void LeaseSetDestination::SendNextLeaseSetRequest (const i2p::data::IdentHash& key, 
+		std::shared_ptr<LeaseSetRequest> request)
+	{
+		bool found = false;
+		if (request->excluded.size () < MAX_NUM_FLOODFILLS_PER_REQUEST)
+		{
+			auto floodfill = i2p::data::netdb.GetClosestFloodfill (key, request->excluded);
+			if (floodfill)
+			{
+				LogPrint (eLogInfo, "Destination: Requesting ", key.ToBase64 (), " at ", floodfill->GetIdentHash ().ToBase64 ());
+				if (SendLeaseSetRequest (key, floodfill, request))
+					found = true;
+			}
+		}
+		if (!found)
+		{
+			LogPrint (eLogInfo, "Destination: ", key.ToBase64 (), " was not found on ", MAX_NUM_FLOODFILLS_PER_REQUEST, " floodfills");
+			request->Complete (nullptr);
+			m_LeaseSetRequests.erase (key);
+		}
+	}	
+		
 	void LeaseSetDestination::HandleDeliveryStatusMessage (uint32_t msgID)
 	{
 		if (msgID == m_PublishReplyToken)
@@ -578,12 +612,7 @@ namespace client
 				shared_from_this (), std::placeholders::_1));
 			return;
 		}
-		if (!m_Pool->GetInboundTunnels ().size () || !m_Pool->GetOutboundTunnels ().size ())
-		{
-			LogPrint (eLogError, "Destination: Can't publish LeaseSet. Destination is not ready");
-			return;
-		}
-		auto floodfill = i2p::data::netdb.GetClosestFloodfill (leaseSet->GetIdentHash (), m_ExcludedFloodfills);
+		auto floodfill = i2p::data::netdb.GetClosestFloodfill (leaseSet->GetStoreHash (), m_ExcludedFloodfills);
 		if (!floodfill)
 		{
 			LogPrint (eLogError, "Destination: Can't publish LeaseSet, no more floodfills found");
@@ -594,26 +623,39 @@ namespace client
 		auto inbound = m_Pool->GetNextInboundTunnel (nullptr, floodfill->GetCompatibleTransports (true));
 		if (!outbound || !inbound)
 		{
-			LogPrint (eLogInfo, "Destination: No compatible tunnels with ", floodfill->GetIdentHash ().ToBase64 (), ". Trying another floodfill");
-			m_ExcludedFloodfills.insert (floodfill->GetIdentHash ());
-			floodfill = i2p::data::netdb.GetClosestFloodfill (leaseSet->GetIdentHash (), m_ExcludedFloodfills);
-			if (floodfill)
-			{
-				outbound = m_Pool->GetNextOutboundTunnel (nullptr, floodfill->GetCompatibleTransports (false));
-				if (outbound)
+			if (!m_Pool->GetInboundTunnels ().empty () && !m_Pool->GetOutboundTunnels ().empty ())
+			{	
+				LogPrint (eLogInfo, "Destination: No compatible tunnels with ", floodfill->GetIdentHash ().ToBase64 (), ". Trying another floodfill");
+				m_ExcludedFloodfills.insert (floodfill->GetIdentHash ());
+				floodfill = i2p::data::netdb.GetClosestFloodfill (leaseSet->GetStoreHash (), m_ExcludedFloodfills);
+				if (floodfill)
 				{
-					inbound = m_Pool->GetNextInboundTunnel (nullptr, floodfill->GetCompatibleTransports (true));
-					if (!inbound)
-						LogPrint (eLogError, "Destination: Can't publish LeaseSet. No inbound tunnels");
+					outbound = m_Pool->GetNextOutboundTunnel (nullptr, floodfill->GetCompatibleTransports (false));
+					if (outbound)
+					{
+						inbound = m_Pool->GetNextInboundTunnel (nullptr, floodfill->GetCompatibleTransports (true));
+						if (!inbound)
+							LogPrint (eLogError, "Destination: Can't publish LeaseSet. No inbound tunnels");
+					}
+					else
+						LogPrint (eLogError, "Destination: Can't publish LeaseSet. No outbound tunnels");
 				}
 				else
-					LogPrint (eLogError, "Destination: Can't publish LeaseSet. No outbound tunnels");
-			}
+					LogPrint (eLogError, "Destination: Can't publish LeaseSet, no more floodfills found");
+			}	
 			else
-				LogPrint (eLogError, "Destination: Can't publish LeaseSet, no more floodfills found");
+				LogPrint (eLogDebug, "Destination: No tunnels in pool");
+			
 			if (!floodfill || !outbound || !inbound)
 			{
+				// we can't publish now
 				m_ExcludedFloodfills.clear ();
+				m_PublishReplyToken = 1; // dummy non-zero value
+				// try again after a while
+				LogPrint (eLogInfo, "Destination: Can't publish LeasetSet because destination is not ready. Try publishing again after ", PUBLISH_CONFIRMATION_TIMEOUT, " seconds");
+				m_PublishConfirmationTimer.expires_from_now (boost::posix_time::seconds(PUBLISH_CONFIRMATION_TIMEOUT));
+				m_PublishConfirmationTimer.async_wait (std::bind (&LeaseSetDestination::HandlePublishConfirmationTimer,
+					shared_from_this (), std::placeholders::_1));
 				return;
 			}
 		}
@@ -621,6 +663,15 @@ namespace client
 		LogPrint (eLogDebug, "Destination: Publish LeaseSet of ", GetIdentHash ().ToBase32 ());
 		RAND_bytes ((uint8_t *)&m_PublishReplyToken, 4);
 		auto msg = WrapMessageForRouter (floodfill, i2p::CreateDatabaseStoreMsg (leaseSet, m_PublishReplyToken, inbound));
+		auto s = shared_from_this ();
+		msg->onDrop = [s]()
+			{
+				s->GetService ().post([s]()
+					{
+						s->m_PublishConfirmationTimer.cancel ();
+						s->HandlePublishConfirmationTimer (boost::system::error_code());
+					});
+			};
 		m_PublishConfirmationTimer.expires_from_now (boost::posix_time::seconds(PUBLISH_CONFIRMATION_TIMEOUT));
 		m_PublishConfirmationTimer.async_wait (std::bind (&LeaseSetDestination::HandlePublishConfirmationTimer,
 			shared_from_this (), std::placeholders::_1));
@@ -637,7 +688,7 @@ namespace client
 				m_PublishReplyToken = 0;
 				if (GetIdentity ()->GetCryptoKeyType () == i2p::data::CRYPTO_KEY_TYPE_ELGAMAL)
 				{
-					LogPrint (eLogWarning, "Destination: Publish confirmation was not received in ", PUBLISH_CONFIRMATION_TIMEOUT, " seconds, will try again");
+					LogPrint (eLogWarning, "Destination: Publish confirmation was not received in ", PUBLISH_CONFIRMATION_TIMEOUT, " seconds or failed. will try again");
 					Publish ();
 				}
 				else
@@ -750,7 +801,7 @@ namespace client
 
 	void LeaseSetDestination::RequestLeaseSet (const i2p::data::IdentHash& dest, RequestComplete requestComplete, std::shared_ptr<const i2p::data::BlindedPublicKey> requestedBlindedKey)
 	{
-		std::set<i2p::data::IdentHash> excluded;
+		std::unordered_set<i2p::data::IdentHash> excluded;
 		auto floodfill = i2p::data::netdb.GetClosestFloodfill (dest, excluded);
 		if (floodfill)
 		{
@@ -822,8 +873,17 @@ namespace client
 				AddECIESx25519Key (replyKey, replyTag);
 			else
 				AddSessionKey (replyKey, replyTag);
-			auto msg = WrapMessageForRouter (nextFloodfill, CreateLeaseSetDatabaseLookupMsg (dest,
-				request->excluded, request->replyTunnel, replyKey, replyTag, isECIES));
+			
+			auto msg = WrapMessageForRouter (nextFloodfill, 
+				CreateLeaseSetDatabaseLookupMsg (dest, request->excluded, request->replyTunnel, replyKey, replyTag, isECIES));
+			auto s = shared_from_this ();
+			msg->onDrop = [s, dest, request]()
+				{
+					s->GetService ().post([s, dest, request]()
+						{
+							s->SendNextLeaseSetRequest (dest, request);
+						});
+				};	
 			request->outboundTunnel->SendTunnelDataMsgs (
 				{
 					i2p::tunnel::TunnelMessageBlock

libi2pd/Destination.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -15,7 +15,7 @@
 #include <memory>
 #include <map>
 #include <unordered_map>
-#include <set>
+#include <unordered_set>
 #include <string>
 #include <functional>
 #include <boost/asio.hpp>
@@ -97,7 +97,7 @@ namespace client
 		struct LeaseSetRequest
 		{
 			LeaseSetRequest (boost::asio::io_service& service): requestTime (0), requestTimeoutTimer (service) {};
-			std::set<i2p::data::IdentHash> excluded;
+			std::unordered_set<i2p::data::IdentHash> excluded;
 			uint64_t requestTime;
 			boost::asio::deadline_timer requestTimeoutTimer;
 			std::list<RequestComplete> requestComplete;
@@ -176,6 +176,7 @@ namespace client
 
 			void RequestLeaseSet (const i2p::data::IdentHash& dest, RequestComplete requestComplete, std::shared_ptr<const i2p::data::BlindedPublicKey> requestedBlindedKey = nullptr);
 			bool SendLeaseSetRequest (const i2p::data::IdentHash& dest, std::shared_ptr<const i2p::data::RouterInfo> nextFloodfill, std::shared_ptr<LeaseSetRequest> request);
+			void SendNextLeaseSetRequest (const i2p::data::IdentHash& key, std::shared_ptr<LeaseSetRequest> request);
 			void HandleRequestTimoutTimer (const boost::system::error_code& ecode, const i2p::data::IdentHash& dest);
 			void HandleCleanupTimer (const boost::system::error_code& ecode);
 			void CleanupRemoteLeaseSets ();
@@ -194,7 +195,7 @@ namespace client
 			bool m_IsPublic;
 			uint32_t m_PublishReplyToken;
 			uint64_t m_LastSubmissionTime; // in seconds
-			std::set<i2p::data::IdentHash> m_ExcludedFloodfills; // for publishing
+			std::unordered_set<i2p::data::IdentHash> m_ExcludedFloodfills; // for publishing
 
 			boost::asio::deadline_timer m_PublishConfirmationTimer, m_PublishVerificationTimer,
 				m_PublishDelayTimer, m_CleanupTimer;

libi2pd/ECIESX25519AEADRatchetSession.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -117,6 +117,12 @@ namespace garlic
 		return session->HandleNextMessage (buf, len, shared_from_this (), index);
 	}
 
+	bool ReceiveRatchetTagSet::IsSessionTerminated () const 
+	{ 
+		return !m_Session || m_Session->IsTerminated (); 
+	}
+
+	
 	SymmetricKeyTagSet::SymmetricKeyTagSet (GarlicDestination * destination, const uint8_t * key):
 		ReceiveRatchetTagSet (nullptr), m_Destination (destination)
 	{
@@ -857,7 +863,7 @@ namespace garlic
 			payloadLen += msg->GetPayloadLength () + 13;
 			if (m_Destination) payloadLen += 32;
 		}
-		if (GetLeaseSetUpdateStatus () == eLeaseSetSubmitted && ts > GetLeaseSetSubmissionTime () + LEASET_CONFIRMATION_TIMEOUT)
+		if (GetLeaseSetUpdateStatus () == eLeaseSetSubmitted && ts > GetLeaseSetSubmissionTime () + LEASESET_CONFIRMATION_TIMEOUT)
 		{
 			// resubmit non-confirmed LeaseSet
 			SetLeaseSetUpdateStatus (eLeaseSetUpdated);
@@ -1148,7 +1154,7 @@ namespace garlic
 		return len;
 	}
 
-	std::shared_ptr<I2NPMessage> WrapECIESX25519Message (std::shared_ptr<const I2NPMessage> msg, const uint8_t * key, uint64_t tag)
+	std::shared_ptr<I2NPMessage> WrapECIESX25519Message (std::shared_ptr<I2NPMessage> msg, const uint8_t * key, uint64_t tag)
 	{
 		auto m = NewI2NPMessage ((msg ? msg->GetPayloadLength () : 0) + 128);
 		m->Align (12); // in order to get buf aligned to 16 (12 + 4)
@@ -1168,10 +1174,16 @@ namespace garlic
 		htobe32buf (m->GetPayload (), offset);
 		m->len += offset + 4;
 		m->FillI2NPMessageHeader (eI2NPGarlic);
+		if (msg->onDrop)
+		{
+			// move onDrop to the wrapping I2NP messages
+			m->onDrop = msg->onDrop;
+			msg->onDrop = nullptr;
+		}
 		return m;
 	}
 
-	std::shared_ptr<I2NPMessage> WrapECIESX25519MessageForRouter (std::shared_ptr<const I2NPMessage> msg, const uint8_t * routerPublicKey)
+	std::shared_ptr<I2NPMessage> WrapECIESX25519MessageForRouter (std::shared_ptr<I2NPMessage> msg, const uint8_t * routerPublicKey)
 	{
 		// Noise_N, we are Alice, routerPublicKey is Bob's
 		i2p::crypto::NoiseSymmetricState noiseState;
@@ -1205,6 +1217,12 @@ namespace garlic
 		htobe32buf (m->GetPayload (), offset);
 		m->len += offset + 4;
 		m->FillI2NPMessageHeader (eI2NPGarlic);
+		if (msg->onDrop)
+		{
+			// move onDrop to the wrapping I2NP messages
+			m->onDrop = msg->onDrop;
+			msg->onDrop = nullptr;
+		}	
 		return m;
 	}
 }

libi2pd/ECIESX25519AEADRatchetSession.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2021, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -86,7 +86,8 @@ namespace garlic
 
 			virtual bool IsIndexExpired (int index) const;
 			virtual bool HandleNextMessage (uint8_t * buf, size_t len, int index);
-
+			virtual bool IsSessionTerminated () const;
+			
 		private:
 
 			int m_TrimBehindIndex = 0;
@@ -101,9 +102,10 @@ namespace garlic
 
 			SymmetricKeyTagSet (GarlicDestination * destination, const uint8_t * key);
 
-			bool IsIndexExpired (int index) const { return false; };
-			bool HandleNextMessage (uint8_t * buf, size_t len, int index);
-
+			bool IsIndexExpired (int index) const override { return false; };
+			bool HandleNextMessage (uint8_t * buf, size_t len, int index) override;
+			bool IsSessionTerminated () const override { return false; }
+			
 		private:
 
 			GarlicDestination * m_Destination;
@@ -245,8 +247,8 @@ namespace garlic
 			i2p::crypto::NoiseSymmetricState m_CurrentNoiseState;
 	};
 
-	std::shared_ptr<I2NPMessage> WrapECIESX25519Message (std::shared_ptr<const I2NPMessage> msg, const uint8_t * key, uint64_t tag);
-	std::shared_ptr<I2NPMessage> WrapECIESX25519MessageForRouter (std::shared_ptr<const I2NPMessage> msg, const uint8_t * routerPublicKey);
+	std::shared_ptr<I2NPMessage> WrapECIESX25519Message (std::shared_ptr<I2NPMessage> msg, const uint8_t * key, uint64_t tag);
+	std::shared_ptr<I2NPMessage> WrapECIESX25519MessageForRouter (std::shared_ptr<I2NPMessage> msg, const uint8_t * routerPublicKey);
 }
 }
 

libi2pd/FS.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2022, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -9,6 +9,11 @@
 #include <algorithm>
 #include <boost/filesystem.hpp>
 
+#if defined(MAC_OSX)
+#include <boost/system/system_error.hpp>
+#include <TargetConditionals.h>
+#endif
+
 #ifdef _WIN32
 #include <shlobj.h>
 #include <windows.h>
@@ -49,7 +54,11 @@ namespace fs {
 
 	const std::string GetUTF8DataDir () {
 #ifdef _WIN32
+#if (BOOST_VERSION >= 108500)
+		boost::filesystem::path path (dataDir);
+#else
 		boost::filesystem::wpath path (dataDir);
+#endif
 		auto loc = boost::filesystem::path::imbue(std::locale( std::locale(), new std::codecvt_utf8_utf16<wchar_t>() ) ); // convert path to UTF-8
 		auto dataDirUTF8 = path.string();
 		boost::filesystem::path::imbue(loc); // Return locale settings back
@@ -82,7 +91,11 @@ namespace fs {
 			}
 			else
 			{
+#if (BOOST_VERSION >= 108500)
+				dataDir = boost::filesystem::path(commonAppData).string() + "\\" + appName;
+#else
 				dataDir = boost::filesystem::wpath(commonAppData).string() + "\\" + appName;
+#endif
 			}
 #else
 			dataDir = "/var/lib/" + appName;
@@ -107,7 +120,11 @@ namespace fs {
 		}
 		else
 		{
+#if (BOOST_VERSION >= 108500)
+			auto execPath = boost::filesystem::path(localAppData).parent_path();
+#else
 			auto execPath = boost::filesystem::wpath(localAppData).parent_path();
+#endif
 
 			// if config file exists in .exe's folder use it
 			if(boost::filesystem::exists(execPath/"i2pd.conf")) // TODO: magic string
@@ -126,7 +143,11 @@ namespace fs {
 				}
 				else
 				{
+#if (BOOST_VERSION >= 108500)
+					dataDir = boost::filesystem::path(localAppData).string() + "\\" + appName;
+#else
 					dataDir = boost::filesystem::wpath(localAppData).string() + "\\" + appName;
+#endif
 				}
 			}
 		}
@@ -136,6 +157,14 @@ namespace fs {
 		dataDir = (home != NULL && strlen(home) > 0) ? home : "";
 		dataDir += "/Library/Application Support/" + appName;
 		return;
+#elif defined(__HAIKU__)
+		char *home = getenv("HOME");
+		if (home != NULL && strlen(home) > 0) {
+			dataDir = std::string(home) + "/config/settings/" + appName;
+		} else {
+			dataDir = "/tmp/" + appName;
+		}
+		return;
 #else /* other unix */
 #if defined(ANDROID)
 		const char * ext = getenv("EXTERNAL_STORAGE");
@@ -243,8 +272,22 @@ namespace fs {
 			auto p = root + i2p::fs::dirSep + prefix1 + chars[i];
 			if (boost::filesystem::exists(p))
 				continue;
+#if TARGET_OS_SIMULATOR
+			// ios simulator fs says it is case sensitive, but it is not
+			boost::system::error_code ec;
+			if (boost::filesystem::create_directory(p, ec))
+				continue;
+			switch (ec.value()) {
+				case boost::system::errc::file_exists:
+				case boost::system::errc::success:
+					continue;
+				default:
+					throw boost::system::system_error( ec, __func__ );
+			}
+#else
 			if (boost::filesystem::create_directory(p))
 				continue; /* ^ throws exception on failure */
+#endif
 			return false;
 		}
 		return true;

libi2pd/Garlic.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -80,7 +80,7 @@ namespace garlic
 
 	void GarlicRoutingSession::CleanupUnconfirmedLeaseSet (uint64_t ts)
 	{
-		if (m_LeaseSetUpdateMsgID && ts*1000LL > m_LeaseSetSubmissionTime + LEASET_CONFIRMATION_TIMEOUT)
+		if (m_LeaseSetUpdateMsgID && ts*1000LL > m_LeaseSetSubmissionTime + LEASESET_CONFIRMATION_TIMEOUT)
 		{
 			if (GetOwner ())
 				GetOwner ()->RemoveDeliveryStatusSession (m_LeaseSetUpdateMsgID);
@@ -232,7 +232,7 @@ namespace garlic
 		if (GetOwner ())
 		{
 			// resubmit non-confirmed LeaseSet
-			if (GetLeaseSetUpdateStatus () == eLeaseSetSubmitted && ts > GetLeaseSetSubmissionTime () + LEASET_CONFIRMATION_TIMEOUT)
+			if (GetLeaseSetUpdateStatus () == eLeaseSetSubmitted && ts > GetLeaseSetSubmissionTime () + LEASESET_CONFIRMATION_TIMEOUT)
 			{
 				SetLeaseSetUpdateStatus (eLeaseSetUpdated);
 				SetSharedRoutingPath (nullptr); // invalidate path since leaseset was not confirmed
@@ -887,8 +887,7 @@ namespace garlic
 			}
 			else
 			{
-				auto session = it->second.tagset->GetSession ();
-				if (!session || session->IsTerminated())
+				if (it->second.tagset->IsSessionTerminated ())
 				{
 					it = m_ECIESx25519Tags.erase (it);
 					numExpiredTags++;

libi2pd/Garlic.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2022, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -50,7 +50,7 @@ namespace garlic
 	const int INCOMING_TAGS_EXPIRATION_TIMEOUT = 960; // 16 minutes
 	const int OUTGOING_TAGS_EXPIRATION_TIMEOUT = 720; // 12 minutes
 	const int OUTGOING_TAGS_CONFIRMATION_TIMEOUT = 10; // 10 seconds
-	const int LEASET_CONFIRMATION_TIMEOUT = 4000; // in milliseconds
+	const int LEASESET_CONFIRMATION_TIMEOUT = 4000; // in milliseconds
 	const int ROUTING_PATH_EXPIRATION_TIMEOUT = 30; // 30 seconds
 	const int ROUTING_PATH_MAX_NUM_TIMES_USED = 100; // how many times might be used
 
@@ -221,7 +221,7 @@ namespace garlic
 	struct ECIESX25519AEADRatchetIndexTagset
 	{
 		int index;
-		ReceiveRatchetTagSetPtr tagset;
+		ReceiveRatchetTagSetPtr tagset; // null if used
 	};
 
 	class GarlicDestination: public i2p::data::LocalDestination

libi2pd/I2NPProtocol.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -72,11 +72,15 @@ namespace i2p
 		SetExpiration (i2p::util::GetMillisecondsSinceEpoch () + I2NP_MESSAGE_EXPIRATION_TIMEOUT);
 	}
 
-	bool I2NPMessage::IsExpired () const
+	bool I2NPMessage::IsExpired (uint64_t ts) const
 	{
-		auto ts = i2p::util::GetMillisecondsSinceEpoch ();
 		auto exp = GetExpiration ();
 		return (ts > exp + I2NP_MESSAGE_CLOCK_SKEW) || (ts < exp - 3*I2NP_MESSAGE_CLOCK_SKEW); // check if expired or too far in future
+	}	
+	
+	bool I2NPMessage::IsExpired () const
+	{
+		return IsExpired (i2p::util::GetMillisecondsSinceEpoch ());
 	}
 
 	std::shared_ptr<I2NPMessage> CreateI2NPMessage (I2NPMessageType msgType, const uint8_t * buf, size_t len, uint32_t replyMsgID)
@@ -111,6 +115,17 @@ namespace i2p
 		return newMsg;
 	}
 
+	std::shared_ptr<I2NPMessage> CreateTunnelTestMsg (uint32_t msgID)
+	{
+		auto m = NewI2NPShortMessage ();
+		uint8_t * buf = m->GetPayload ();
+		htobe32buf (buf + TUNNEL_TEST_MSGID_OFFSET, msgID);
+		htobe64buf (buf + TUNNEL_TEST_TIMESTAMP_OFFSET, i2p::util::GetMonotonicMicroseconds ());
+		m->len += TUNNEL_TEST_SIZE;
+		m->FillI2NPMessageHeader (eI2NPTunnelTest);
+		return m;
+	}
+
 	std::shared_ptr<I2NPMessage> CreateDeliveryStatusMsg (uint32_t msgID)
 	{
 		auto m = NewI2NPShortMessage ();
@@ -132,7 +147,7 @@ namespace i2p
 	}
 
 	std::shared_ptr<I2NPMessage> CreateRouterInfoDatabaseLookupMsg (const uint8_t * key, const uint8_t * from,
-		uint32_t replyTunnelID, bool exploratory, std::set<i2p::data::IdentHash> * excludedPeers)
+		uint32_t replyTunnelID, bool exploratory, std::unordered_set<i2p::data::IdentHash> * excludedPeers)
 	{
 		int cnt = excludedPeers ? excludedPeers->size () : 0;
 		auto m = cnt > 7 ? NewI2NPMessage () : NewI2NPShortMessage ();
@@ -177,7 +192,7 @@ namespace i2p
 	}
 
 	std::shared_ptr<I2NPMessage> CreateLeaseSetDatabaseLookupMsg (const i2p::data::IdentHash& dest,
-		const std::set<i2p::data::IdentHash>& excludedFloodfills,
+		const std::unordered_set<i2p::data::IdentHash>& excludedFloodfills,
 		std::shared_ptr<const i2p::tunnel::InboundTunnel> replyTunnel, const uint8_t * replyKey,
 			const uint8_t * replyTag, bool replyECIES)
 	{
@@ -369,10 +384,20 @@ namespace i2p
 			if (!memcmp (record + BUILD_REQUEST_RECORD_TO_PEER_OFFSET, (const uint8_t *)i2p::context.GetRouterInfo ().GetIdentHash (), 16))
 			{
 				LogPrint (eLogDebug, "I2NP: Build request record ", i, " is ours");
-				if (!i2p::context.DecryptTunnelBuildRecord (record + BUILD_REQUEST_RECORD_ENCRYPTED_OFFSET, clearText)) return false;
+				if (!i2p::context.DecryptTunnelBuildRecord (record + BUILD_REQUEST_RECORD_ENCRYPTED_OFFSET, clearText)) 
+				{
+					LogPrint (eLogWarning, "I2NP: Failed to decrypt tunnel build record");
+					return false;
+				}	
+				if (!memcmp ((const uint8_t *)i2p::context.GetIdentHash (), clearText + ECIES_BUILD_REQUEST_RECORD_NEXT_IDENT_OFFSET, 32) && // if next ident is now ours
+				    !(clearText[ECIES_BUILD_REQUEST_RECORD_FLAG_OFFSET] & TUNNEL_BUILD_RECORD_ENDPOINT_FLAG)) // and not endpoint
+				{
+					LogPrint (eLogWarning, "I2NP: Next ident is ours in tunnel build record");
+					return false;
+				}	
 				uint8_t retCode = 0;
 				// replace record to reply
-				if (i2p::context.AcceptsTunnels () && !i2p::context.IsHighCongestion ())
+				if (i2p::context.AcceptsTunnels () && i2p::context.GetCongestionLevel (false) < CONGESTION_LEVEL_FULL)
 				{
 					auto transitTunnel = i2p::tunnel::CreateTransitTunnel (
 							bufbe32toh (clearText + ECIES_BUILD_REQUEST_RECORD_RECEIVE_TUNNEL_OFFSET),
@@ -577,16 +602,24 @@ namespace i2p
 					memcpy (ivKey, noiseState.m_CK + 32, 32);
 				}
 				else
+				{	
+					if (!memcmp ((const uint8_t *)i2p::context.GetIdentHash (), clearText + SHORT_REQUEST_RECORD_NEXT_IDENT_OFFSET, 32)) // if next ident is now ours
+					{
+						LogPrint (eLogWarning, "I2NP: Next ident is ours in short request record");
+						return;
+					}	
 					memcpy (ivKey, noiseState.m_CK , 32);
+				}	
 
 				// check if we accept this tunnel
+				std::shared_ptr<i2p::tunnel::TransitTunnel> transitTunnel;
 				uint8_t retCode = 0;
-				if (!i2p::context.AcceptsTunnels () || i2p::context.IsHighCongestion ())
+				if (!i2p::context.AcceptsTunnels () || i2p::context.GetCongestionLevel (false) >= CONGESTION_LEVEL_FULL)
 					retCode = 30;
 				if (!retCode)
 				{
 					// create new transit tunnel
-					auto transitTunnel = i2p::tunnel::CreateTransitTunnel (
+					transitTunnel = i2p::tunnel::CreateTransitTunnel (
 						bufbe32toh (clearText + SHORT_REQUEST_RECORD_RECEIVE_TUNNEL_OFFSET),
 						clearText + SHORT_REQUEST_RECORD_NEXT_IDENT_OFFSET,
 						bufbe32toh (clearText + SHORT_REQUEST_RECORD_NEXT_TUNNEL_OFFSET),
@@ -620,11 +653,22 @@ namespace i2p
 					reply += SHORT_TUNNEL_BUILD_RECORD_SIZE;
 				}
 				// send reply
+				auto onDrop = [transitTunnel]()
+					{
+						if (transitTunnel)
+						{
+							auto t = transitTunnel->GetCreationTime ();
+							if (t > i2p::tunnel::TUNNEL_EXPIRATION_TIMEOUT)
+								// make transit tunnel expired 
+								transitTunnel->SetCreationTime (t - i2p::tunnel::TUNNEL_EXPIRATION_TIMEOUT);
+						}	
+					};
 				if (isEndpoint)
 				{
 					auto replyMsg = NewI2NPShortMessage ();
 					replyMsg->Concat (buf, len);
 					replyMsg->FillI2NPMessageHeader (eI2NPShortTunnelBuildReply, bufbe32toh (clearText + SHORT_REQUEST_RECORD_SEND_MSG_ID_OFFSET));
+					if (transitTunnel) replyMsg->onDrop = onDrop;
 					if (memcmp ((const uint8_t *)i2p::context.GetIdentHash (),
 						clearText + SHORT_REQUEST_RECORD_NEXT_IDENT_OFFSET, 32)) // reply IBGW is not local?
 					{
@@ -642,15 +686,21 @@ namespace i2p
 						uint32_t tunnelID = bufbe32toh (clearText + SHORT_REQUEST_RECORD_NEXT_TUNNEL_OFFSET);
 						auto tunnel = i2p::tunnel::tunnels.GetTunnel (tunnelID);
 						if (tunnel)
+						{	
 							tunnel->SendTunnelDataMsg (replyMsg);
+							tunnel->FlushTunnelDataMsgs ();
+						}	
 						else
 							LogPrint (eLogWarning, "I2NP: Tunnel ", tunnelID, " not found for short tunnel build reply");
 					}
 				}
 				else
-					transports.SendMessage (clearText + SHORT_REQUEST_RECORD_NEXT_IDENT_OFFSET,
-						CreateI2NPMessage (eI2NPShortTunnelBuild, buf, len,
-							bufbe32toh (clearText + SHORT_REQUEST_RECORD_SEND_MSG_ID_OFFSET)));
+				{
+					auto msg = CreateI2NPMessage (eI2NPShortTunnelBuild, buf, len,
+							bufbe32toh (clearText + SHORT_REQUEST_RECORD_SEND_MSG_ID_OFFSET));
+					if (transitTunnel) msg->onDrop = onDrop;
+					transports.SendMessage (clearText + SHORT_REQUEST_RECORD_NEXT_IDENT_OFFSET, msg);
+				}	
 				return;
 			}
 			record += SHORT_TUNNEL_BUILD_RECORD_SIZE;
@@ -710,7 +760,11 @@ namespace i2p
 			return msg;
 		}
 		else
-			return CreateTunnelGatewayMsg (tunnelID, msg->GetBuffer (), msg->GetLength ());
+		{	
+			auto newMsg = CreateTunnelGatewayMsg (tunnelID, msg->GetBuffer (), msg->GetLength ());
+			if (msg->onDrop) newMsg->onDrop = msg->onDrop; 
+			return newMsg;
+		}	
 	}
 
 	std::shared_ptr<I2NPMessage> CreateTunnelGatewayMsg (uint32_t tunnelID, I2NPMessageType msgType,
@@ -808,12 +862,14 @@ namespace i2p
 					break;
 				}
 				case eI2NPDatabaseStore:
-				case eI2NPDatabaseSearchReply:	
 					// forward to netDb if came directly or through exploratory tunnel as response to our request
 					if (!msg->from || !msg->from->GetTunnelPool () || msg->from->GetTunnelPool ()->IsExploratory ())
 						i2p::data::netdb.PostI2NPMsg (msg);
 				break;
-				
+				case eI2NPDatabaseSearchReply:
+					if (!msg->from || !msg->from->GetTunnelPool () || msg->from->GetTunnelPool ()->IsExploratory ())
+						i2p::data::netdb.PostDatabaseSearchReplyMsg (msg);
+				break;	
 				case eI2NPDatabaseLookup:
 					// forward to netDb if floodfill and came directly
 					if (!msg->from && i2p::context.IsFloodfill ())
@@ -827,6 +883,10 @@ namespace i2p
 						i2p::context.ProcessDeliveryStatusMessage (msg);
 					break;
 				}
+				case eI2NPTunnelTest:
+					if (msg->from && msg->from->GetTunnelPool ())
+						msg->from->GetTunnelPool ()->ProcessTunnelTest (msg);
+				break;
 				case eI2NPVariableTunnelBuild:
 				case eI2NPTunnelBuild:
 				case eI2NPShortTunnelBuild:

libi2pd/I2NPProtocol.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -11,8 +11,9 @@
 
 #include <inttypes.h>
 #include <string.h>
-#include <set>
+#include <unordered_set>
 #include <memory>
+#include <functional>
 #include "Crypto.h"
 #include "I2PEndian.h"
 #include "Identity.h"
@@ -47,6 +48,11 @@ namespace i2p
 	const size_t DELIVERY_STATUS_TIMESTAMP_OFFSET = DELIVERY_STATUS_MSGID_OFFSET + 4;
 	const size_t DELIVERY_STATUS_SIZE = DELIVERY_STATUS_TIMESTAMP_OFFSET + 8;
 
+	// TunnelTest
+	const size_t TUNNEL_TEST_MSGID_OFFSET = 0;
+	const size_t TUNNEL_TEST_TIMESTAMP_OFFSET = TUNNEL_TEST_MSGID_OFFSET + 4;
+	const size_t TUNNEL_TEST_SIZE = TUNNEL_TEST_TIMESTAMP_OFFSET + 8;
+
 	// DatabaseStore
 	const size_t DATABASE_STORE_KEY_OFFSET = 0;
 	const size_t DATABASE_STORE_TYPE_OFFSET = DATABASE_STORE_KEY_OFFSET + 32;
@@ -115,7 +121,8 @@ namespace i2p
 		eI2NPVariableTunnelBuild = 23,
 		eI2NPVariableTunnelBuildReply = 24,
 		eI2NPShortTunnelBuild = 25,
-		eI2NPShortTunnelBuildReply = 26
+		eI2NPShortTunnelBuildReply = 26,
+		eI2NPTunnelTest = 231
 	};
 
 	const uint8_t TUNNEL_BUILD_RECORD_GATEWAY_FLAG = 0x80;
@@ -138,9 +145,16 @@ namespace tunnel
 	class TunnelPool;
 }
 
+	const int CONGESTION_LEVEL_MEDIUM = 70;
+	const int CONGESTION_LEVEL_HIGH = 90;
+	const int CONGESTION_LEVEL_FULL = 100;
+
 	const size_t I2NP_MAX_MESSAGE_SIZE = 62708;
 	const size_t I2NP_MAX_SHORT_MESSAGE_SIZE = 4096;
 	const size_t I2NP_MAX_MEDIUM_MESSAGE_SIZE = 16384;
+	const unsigned int I2NP_MESSAGE_LOCAL_EXPIRATION_TIMEOUT_FACTOR = 3; // multiples of RTT
+	const unsigned int I2NP_MESSAGE_LOCAL_EXPIRATION_TIMEOUT_MIN = 200000; // in microseconds
+	const unsigned int I2NP_MESSAGE_LOCAL_EXPIRATION_TIMEOUT_MAX = 2000000; // in microseconds
 	const unsigned int I2NP_MESSAGE_EXPIRATION_TIMEOUT = 8000; // in milliseconds (as initial RTT)
 	const unsigned int I2NP_MESSAGE_CLOCK_SKEW = 60*1000; // 1 minute in milliseconds
 
@@ -149,9 +163,11 @@ namespace tunnel
 		uint8_t * buf;
 		size_t len, offset, maxLen;
 		std::shared_ptr<i2p::tunnel::InboundTunnel> from;
+		std::function<void ()> onDrop;
+		uint64_t enqueueTime; // monotonic microseconds
 
-		I2NPMessage (): buf (nullptr),len (I2NP_HEADER_SIZE + 2),
-			offset(2), maxLen (0), from (nullptr) {}; // reserve 2 bytes for NTCP header
+		I2NPMessage (): buf (nullptr), len (I2NP_HEADER_SIZE + 2),
+			offset(2), maxLen (0), from (nullptr), enqueueTime (0) {}; // reserve 2 bytes for NTCP header
 
 		// header accessors
 		uint8_t * GetHeader () { return GetBuffer (); };
@@ -161,7 +177,9 @@ namespace tunnel
 		void SetMsgID (uint32_t msgID) { htobe32buf (GetHeader () + I2NP_HEADER_MSGID_OFFSET, msgID); };
 		uint32_t GetMsgID () const { return bufbe32toh (GetHeader () + I2NP_HEADER_MSGID_OFFSET); };
 		void SetExpiration (uint64_t expiration) { htobe64buf (GetHeader () + I2NP_HEADER_EXPIRATION_OFFSET, expiration); };
+		void SetEnqueueTime (uint64_t mts) { enqueueTime = mts; };
 		uint64_t GetExpiration () const { return bufbe64toh (GetHeader () + I2NP_HEADER_EXPIRATION_OFFSET); };
+		uint64_t GetEnqueueTime () const { return enqueueTime; };
 		void SetSize (uint16_t size) { htobe16buf (GetHeader () + I2NP_HEADER_SIZE_OFFSET, size); };
 		uint16_t GetSize () const { return bufbe16toh (GetHeader () + I2NP_HEADER_SIZE_OFFSET); };
 		void UpdateSize () { SetSize (GetPayloadLength ()); };
@@ -241,7 +259,6 @@ namespace tunnel
 			SetSize (len - offset - I2NP_HEADER_SIZE);
 			SetChks (0);
 		}
-
 		void ToNTCP2 ()
 		{
 			uint8_t * ntcp2 = GetNTCP2Header ();
@@ -252,6 +269,9 @@ namespace tunnel
 		void FillI2NPMessageHeader (I2NPMessageType msgType, uint32_t replyMsgID = 0, bool checksum = true);
 		void RenewI2NPMessageHeader ();
 		bool IsExpired () const;
+		bool IsExpired (uint64_t ts) const; // in milliseconds
+
+		void Drop () { if (onDrop) { onDrop (); onDrop = nullptr; }; }
 	};
 
 	template<int sz>
@@ -271,11 +291,12 @@ namespace tunnel
 	std::shared_ptr<I2NPMessage> CreateI2NPMessage (const uint8_t * buf, size_t len, std::shared_ptr<i2p::tunnel::InboundTunnel> from = nullptr);
 	std::shared_ptr<I2NPMessage> CopyI2NPMessage (std::shared_ptr<I2NPMessage> msg);
 
+	std::shared_ptr<I2NPMessage> CreateTunnelTestMsg (uint32_t msgID);
 	std::shared_ptr<I2NPMessage> CreateDeliveryStatusMsg (uint32_t msgID);
 	std::shared_ptr<I2NPMessage> CreateRouterInfoDatabaseLookupMsg (const uint8_t * key, const uint8_t * from,
-		uint32_t replyTunnelID, bool exploratory = false, std::set<i2p::data::IdentHash> * excludedPeers = nullptr);
+		uint32_t replyTunnelID, bool exploratory = false, std::unordered_set<i2p::data::IdentHash> * excludedPeers = nullptr);
 	std::shared_ptr<I2NPMessage> CreateLeaseSetDatabaseLookupMsg (const i2p::data::IdentHash& dest,
-		const std::set<i2p::data::IdentHash>& excludedFloodfills,
+		const std::unordered_set<i2p::data::IdentHash>& excludedFloodfills,
 		std::shared_ptr<const i2p::tunnel::InboundTunnel> replyTunnel,
 		const uint8_t * replyKey, const uint8_t * replyTag, bool replyECIES = false);
 	std::shared_ptr<I2NPMessage> CreateDatabaseSearchReply (const i2p::data::IdentHash& ident, std::vector<i2p::data::IdentHash> routers);

libi2pd/I2PEndian.h

@@ -14,7 +14,7 @@
 #if defined(__FreeBSD__) || defined(__NetBSD__)
 #include <sys/endian.h>
 
-#elif defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__OpenBSD__) || defined(__GLIBC__)
+#elif defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__OpenBSD__) || defined(__GLIBC__) || defined(__HAIKU__)
 #include <endian.h>
 
 #elif defined(__APPLE__) && defined(__MACH__)

libi2pd/Identity.cpp

@@ -581,7 +581,7 @@ namespace data
 		if (keyType == SIGNING_KEY_TYPE_DSA_SHA1)
 			m_Signer.reset (new i2p::crypto::DSASigner (m_SigningPrivateKey, m_Public->GetStandardIdentity ().signingKey));
 		else if (keyType == SIGNING_KEY_TYPE_EDDSA_SHA512_ED25519 && !IsOfflineSignature ())
-			m_Signer.reset (new i2p::crypto::EDDSA25519Signer (m_SigningPrivateKey, m_Public->GetStandardIdentity ().certificate - i2p::crypto::EDDSA25519_PUBLIC_KEY_LENGTH)); // TODO: remove public key check
+			m_Signer.reset (new i2p::crypto::EDDSA25519Signer (m_SigningPrivateKey, m_Public->GetStandardIdentity ().signingKey + (sizeof(Identity::signingKey) - i2p::crypto::EDDSA25519_PUBLIC_KEY_LENGTH))); // TODO: remove public key check
 		else
 		{
 			// public key is not required
@@ -803,29 +803,12 @@ namespace data
 	XORMetric operator^(const IdentHash& key1, const IdentHash& key2)
 	{
 		XORMetric m;
-#if (defined(__x86_64__) || defined(__i386__)) && defined(__AVX__) // not all X86 targets supports AVX (like old Pentium, see #1600)
-		if(i2p::cpu::avx)
-		{
-			__asm__
-			(
-				"vmovups %1, %%ymm0 \n"
-				"vmovups %2, %%ymm1 \n"
-				"vxorps %%ymm0, %%ymm1, %%ymm1 \n"
-				"vmovups %%ymm1, %0 \n"
-				: "=m"(*m.metric)
-				: "m"(*key1), "m"(*key2)
-				: "memory", "%xmm0", "%xmm1" // should be replaced by %ymm0/1 once supported by compiler
-			);
-		}
-		else
-#endif
-		{
-			const uint64_t * hash1 = key1.GetLL (), * hash2 = key2.GetLL ();
-			m.metric_ll[0] = hash1[0] ^ hash2[0];
-			m.metric_ll[1] = hash1[1] ^ hash2[1];
-			m.metric_ll[2] = hash1[2] ^ hash2[2];
-			m.metric_ll[3] = hash1[3] ^ hash2[3];
-		}
+
+		const uint64_t * hash1 = key1.GetLL (), * hash2 = key2.GetLL ();
+		m.metric_ll[0] = hash1[0] ^ hash2[0];
+		m.metric_ll[1] = hash1[1] ^ hash2[1];
+		m.metric_ll[2] = hash1[2] ^ hash2[2];
+		m.metric_ll[3] = hash1[3] ^ hash2[3];
 
 		return m;
 	}

libi2pd/Log.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2020, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -87,8 +87,8 @@ namespace log {
 			Log ();
 			~Log ();
 
-			LogType GetLogType () { return m_Destination; };
-			LogLevel GetLogLevel () { return m_MinLevel; };
+			LogType GetLogType () const { return m_Destination; };
+			LogLevel GetLogLevel () const { return m_MinLevel; };
 
 			void Start ();
 			void Stop ();
@@ -160,6 +160,11 @@ namespace log {
 } // log
 } // i2p
 
+inline bool CheckLogLevel (LogLevel level) noexcept
+{
+	return level <= i2p::log::Logger().GetLogLevel ();
+}	
+
 /** internal usage only -- folding args array to single string */
 template<typename TValue>
 void LogPrint (std::stringstream& s, TValue&& arg) noexcept
@@ -185,9 +190,7 @@ void LogPrint (std::stringstream& s, TValue&& arg, TArgs&&... args) noexcept
 template<typename... TArgs>
 void LogPrint (LogLevel level, TArgs&&... args) noexcept
 {
-	i2p::log::Log &log = i2p::log::Logger();
-	if (level > log.GetLogLevel ())
-		return;
+	if (!CheckLogLevel (level)) return; 
 
 	// fold message to single string
 	std::stringstream ss;
@@ -200,7 +203,7 @@ void LogPrint (LogLevel level, TArgs&&... args) noexcept
 
 	auto msg = std::make_shared<i2p::log::LogMsg>(level, std::time(nullptr), std::move(ss).str());
 	msg->tid = std::this_thread::get_id();
-	log.Append(msg);
+	i2p::log::Logger().Append(msg);
 }
 
 /**

libi2pd/NTCP2.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -19,9 +19,10 @@
 #include "RouterContext.h"
 #include "Transports.h"
 #include "NetDb.hpp"
-#include "NTCP2.h"
 #include "HTTP.h"
 #include "util.h"
+#include "Socks5.h"
+#include "NTCP2.h"
 
 #if defined(__linux__) && !defined(_NETINET_IN_H)
 	#include <linux/in6.h>
@@ -128,7 +129,8 @@ namespace transport
 		options[1] = 2; // ver
 		htobe16buf (options + 2, paddingLength); // padLen
 		// m3p2Len
-		auto bufLen = i2p::context.GetRouterInfo ().GetBufferLen ();
+		auto riBuffer = i2p::context.CopyRouterInfoBuffer ();
+		auto bufLen = riBuffer->GetBufferLen ();
 		m3p2Len = bufLen + 4 + 16; // (RI header + RI + MAC for now) TODO: implement options
 		htobe16buf (options + 4, m3p2Len);
 		// fill m3p2 payload (RouterInfo block)
@@ -137,7 +139,7 @@ namespace transport
 		m3p2[0] = eNTCP2BlkRouterInfo; // block
 		htobe16buf (m3p2 + 1, bufLen + 1); // flag + RI
 		m3p2[3] = 0; // flag
-		memcpy (m3p2 + 4, i2p::context.GetRouterInfo ().GetBuffer (), bufLen); // TODO: own RI should be protected by mutex
+		memcpy (m3p2 + 4, riBuffer->data (), bufLen); // TODO: eliminate extra copy
 		// 2 bytes reserved
 		htobe32buf (options + 8, (i2p::util::GetMillisecondsSinceEpoch () + 500)/1000); // tsA, rounded to seconds
 		// 4 bytes reserved
@@ -373,9 +375,20 @@ namespace transport
 			m_Socket.close ();
 			transports.PeerDisconnected (shared_from_this ());
 			m_Server.RemoveNTCP2Session (shared_from_this ());
+			for (auto& it: m_SendQueue)
+				it->Drop ();
 			m_SendQueue.clear ();
-			m_SendQueueSize = 0;
-			LogPrint (eLogDebug, "NTCP2: Session terminated");
+			SetSendQueueSize (0);
+			auto remoteIdentity = GetRemoteIdentity ();
+			if (remoteIdentity)
+			{
+				LogPrint (eLogDebug, "NTCP2: Session with ", GetRemoteEndpoint (),
+					" (", i2p::data::GetIdentHashAbbreviation (remoteIdentity->GetIdentHash ()), ") terminated");
+			}
+			else
+			{
+				LogPrint (eLogDebug, "NTCP2: Session with ", GetRemoteEndpoint (), " terminated");
+			}
 		}
 	}
 
@@ -424,7 +437,7 @@ namespace transport
 	void NTCP2Session::DeleteNextReceiveBuffer (uint64_t ts)
 	{
 		if (m_NextReceivedBuffer && !m_IsReceiving &&
-			ts > m_LastActivityTimestamp + NTCP2_RECEIVE_BUFFER_DELETION_TIMEOUT)
+			ts > GetLastActivityTimestamp () + NTCP2_RECEIVE_BUFFER_DELETION_TIMEOUT)
 		{
 			delete[] m_NextReceivedBuffer;
 			m_NextReceivedBuffer = nullptr;
@@ -691,16 +704,25 @@ namespace transport
 					i2p::data::RouterInfo ri (buf.data () + 4, size - 1); // 1 byte block type + 2 bytes size + 1 byte flag
 					if (ri.IsUnreachable ())
 					{
-						LogPrint (eLogError, "NTCP2: Signature verification failed in SessionConfirmed");
+						LogPrint (eLogError, "NTCP2: RouterInfo verification failed in SessionConfirmed from ", GetRemoteEndpoint ());
 						SendTerminationAndTerminate (eNTCP2RouterInfoSignatureVerificationFail);
 						return;
 					}
-					if (i2p::util::GetMillisecondsSinceEpoch () > ri.GetTimestamp () + i2p::data::NETDB_MIN_EXPIRATION_TIMEOUT*1000LL) // 90 minutes
+					LogPrint(eLogDebug, "NTCP2: SessionConfirmed from ", GetRemoteEndpoint (),
+						" (", i2p::data::GetIdentHashAbbreviation (ri.GetIdentHash ()), ")");
+					auto ts = i2p::util::GetMillisecondsSinceEpoch ();
+					if (ts > ri.GetTimestamp () + i2p::data::NETDB_MIN_EXPIRATION_TIMEOUT*1000LL) // 90 minutes
 					{
-						LogPrint (eLogError, "NTCP2: RouterInfo is too old in SessionConfirmed");
+						LogPrint (eLogError, "NTCP2: RouterInfo is too old in SessionConfirmed for ", (ts - ri.GetTimestamp ())/1000LL, " seconds");
 						SendTerminationAndTerminate (eNTCP2Message3Error);
 						return;
 					}
+					if (ts + i2p::data::NETDB_EXPIRATION_TIMEOUT_THRESHOLD*1000LL < ri.GetTimestamp ()) // 2 minutes
+					{
+						LogPrint (eLogError, "NTCP2: RouterInfo is from future for ", (ri.GetTimestamp () - ts)/1000LL, " seconds");
+						SendTerminationAndTerminate (eNTCP2Message3Error);
+						return;
+					}	
 					auto addr = m_RemoteEndpoint.address ().is_v4 () ? ri.GetNTCP2V4Address () :
 						(i2p::util::net::IsYggdrasilAddress (m_RemoteEndpoint.address ()) ? ri.GetYggdrasilAddress () : ri.GetNTCP2V6Address ());
 					if (!addr || memcmp (m_Establisher->m_RemoteStaticKey, addr->s, 32))
@@ -771,7 +793,7 @@ namespace transport
 	void NTCP2Session::ServerLogin ()
 	{
 		SetTerminationTimeout (NTCP2_ESTABLISH_TIMEOUT);
-		m_LastActivityTimestamp = i2p::util::GetSecondsSinceEpoch ();
+		SetLastActivityTimestamp (i2p::util::GetSecondsSinceEpoch ());
 		m_Establisher->CreateEphemeralKey ();
 		boost::asio::async_read (m_Socket, boost::asio::buffer(m_Establisher->m_SessionRequestBuffer, 64), boost::asio::transfer_all (),
 			std::bind(&NTCP2Session::HandleSessionRequestReceived, shared_from_this (),
@@ -815,14 +837,19 @@ namespace transport
 				CreateNextReceivedBuffer (m_NextReceivedLen);
 				boost::system::error_code ec;
 				size_t moreBytes = m_Socket.available(ec);
-				if (!ec && moreBytes >= m_NextReceivedLen)
-				{
-					// read and process message immediately if available
-					moreBytes = boost::asio::read (m_Socket, boost::asio::buffer(m_NextReceivedBuffer, m_NextReceivedLen), boost::asio::transfer_all (), ec);
-					HandleReceived (ec, moreBytes);
-				}
+				if (!ec)
+				{	
+					if (moreBytes >= m_NextReceivedLen)
+					{
+						// read and process message immediately if available
+						moreBytes = boost::asio::read (m_Socket, boost::asio::buffer(m_NextReceivedBuffer, m_NextReceivedLen), boost::asio::transfer_all (), ec);
+						HandleReceived (ec, moreBytes);
+					}
+					else
+						Receive ();
+				}	
 				else
-					Receive ();
+					LogPrint (eLogWarning, "NTCP2: Socket error: ", ec.message ());
 			}
 			else
 			{
@@ -848,15 +875,14 @@ namespace transport
 	{
 		if (ecode)
 		{
-			if (ecode != boost::asio::error::operation_aborted)
-				LogPrint (eLogWarning, "NTCP2: Receive read error: ", ecode.message ());
+			if (ecode != boost::asio::error::operation_aborted)	
+				LogPrint (eLogWarning, "NTCP2: Receive read error: ", ecode.message ());	
 			Terminate ();
 		}
 		else
 		{
-			m_LastActivityTimestamp = i2p::util::GetSecondsSinceEpoch ();
-			m_NumReceivedBytes += bytes_transferred + 2; // + length
-			i2p::transport::transports.UpdateReceivedBytes (bytes_transferred);
+			UpdateNumReceivedBytes (bytes_transferred + 2);
+			i2p::transport::transports.UpdateReceivedBytes (bytes_transferred + 2);
 			uint8_t nonce[12];
 			CreateNonce (m_ReceiveSequenceNumber, nonce); m_ReceiveSequenceNumber++;
 			if (i2p::crypto::AEADChaCha20Poly1305 (m_NextReceivedBuffer, m_NextReceivedLen-16, nullptr, 0, m_ReceiveKey, nonce, m_NextReceivedBuffer, m_NextReceivedLen, false))
@@ -884,7 +910,7 @@ namespace transport
 			auto size = bufbe16toh (frame + offset);
 			offset += 2;
 			LogPrint (eLogDebug, "NTCP2: Block type ", (int)blk, " of size ", size);
-			if (size > len)
+			if (offset + size > len)
 			{
 				LogPrint (eLogError, "NTCP2: Unexpected block length ", size);
 				break;
@@ -1029,6 +1055,11 @@ namespace transport
 			macBuf = m_NextSendBuffer + paddingLen;
 			totalLen += paddingLen;
 		}
+		if (totalLen > NTCP2_UNENCRYPTED_FRAME_MAX_SIZE)
+		{
+			LogPrint (eLogError, "NTCP2: Frame to send is too long ", totalLen);
+			return;
+		}	
 		uint8_t nonce[12];
 		CreateNonce (m_SendSequenceNumber, nonce); m_SendSequenceNumber++;
 		i2p::crypto::AEADChaCha20Poly1305Encrypt (encryptBufs, m_SendKey, nonce, macBuf); // encrypt buffers
@@ -1053,6 +1084,12 @@ namespace transport
 			delete[] m_NextSendBuffer; m_NextSendBuffer = nullptr;
 			return;
 		}
+		if (payloadLen > NTCP2_UNENCRYPTED_FRAME_MAX_SIZE)
+		{
+			LogPrint (eLogError, "NTCP2: Buffer to send is too long ", payloadLen);
+			delete[] m_NextSendBuffer; m_NextSendBuffer = nullptr;
+			return;
+		}	
 		// encrypt
 		uint8_t nonce[12];
 		CreateNonce (m_SendSequenceNumber, nonce); m_SendSequenceNumber++;
@@ -1077,11 +1114,10 @@ namespace transport
 		}
 		else
 		{
-			m_LastActivityTimestamp = i2p::util::GetSecondsSinceEpoch ();
-			m_NumSentBytes += bytes_transferred;
+			UpdateNumSentBytes (bytes_transferred);
 			i2p::transport::transports.UpdateSentBytes (bytes_transferred);
 			LogPrint (eLogDebug, "NTCP2: Next frame sent ", bytes_transferred);
-			if (m_LastActivityTimestamp > m_NextRouterInfoResendTime)
+			if (GetLastActivityTimestamp () > m_NextRouterInfoResendTime)
 			{
 				m_NextRouterInfoResendTime += NTCP2_ROUTERINFO_RESEND_INTERVAL +
 					rand ()%NTCP2_ROUTERINFO_RESEND_INTERVAL_THRESHOLD;
@@ -1090,7 +1126,7 @@ namespace transport
 			else
 			{
 				SendQueue ();
-				m_SendQueueSize = m_SendQueue.size ();
+				SetSendQueueSize (m_SendQueue.size ());
 			}
 		}
 	}
@@ -1100,20 +1136,31 @@ namespace transport
 		if (!m_SendQueue.empty ())
 		{
 			std::vector<std::shared_ptr<I2NPMessage> > msgs;
+			auto ts = i2p::util::GetMillisecondsSinceEpoch ();
 			size_t s = 0;
 			while (!m_SendQueue.empty ())
 			{
 				auto msg = m_SendQueue.front ();
+				if (!msg || msg->IsExpired (ts))
+				{
+					// drop null or expired message
+					if (msg) msg->Drop ();
+					m_SendQueue.pop_front ();
+					continue;
+				}	
 				size_t len = msg->GetNTCP2Length ();
 				if (s + len + 3 <= NTCP2_UNENCRYPTED_FRAME_MAX_SIZE) // 3 bytes block header
 				{
 					msgs.push_back (msg);
 					s += (len + 3);
 					m_SendQueue.pop_front ();
+					if (s >= NTCP2_SEND_AFTER_FRAME_SIZE)
+						break; // send frame right a way
 				}
 				else if (len + 3 > NTCP2_UNENCRYPTED_FRAME_MAX_SIZE)
 				{
 					LogPrint (eLogError, "NTCP2: I2NP message of size ", len, " can't be sent. Dropped");
+					msg->Drop ();
 					m_SendQueue.pop_front ();
 				}
 				else
@@ -1129,7 +1176,12 @@ namespace transport
 		len -= 3;
 		if (msgLen < 256) msgLen = 256; // for short message padding should not be always zero
 		size_t paddingSize = (msgLen*NTCP2_MAX_PADDING_RATIO)/100;
-		if (msgLen + paddingSize + 3 > NTCP2_UNENCRYPTED_FRAME_MAX_SIZE) paddingSize = NTCP2_UNENCRYPTED_FRAME_MAX_SIZE - msgLen -3;
+		if (msgLen + paddingSize + 3 > NTCP2_UNENCRYPTED_FRAME_MAX_SIZE) 
+		{	
+			int l = (int)NTCP2_UNENCRYPTED_FRAME_MAX_SIZE - msgLen -3;
+			if (l <= 0) return 0;
+			paddingSize = l;
+		}	
 		if (paddingSize > len) paddingSize = len;
 		if (paddingSize)
 		{
@@ -1138,7 +1190,7 @@ namespace transport
 				RAND_bytes ((uint8_t *)m_PaddingSizes, sizeof (m_PaddingSizes));
 				m_NextPaddingSize = 0;
 			}
-			paddingSize = m_PaddingSizes[m_NextPaddingSize++] % paddingSize;
+			paddingSize = m_PaddingSizes[m_NextPaddingSize++] % (paddingSize + 1);
 		}
 		buf[0] = eNTCP2BlkPadding; // blk
 		htobe16buf (buf + 1, paddingSize); // size
@@ -1149,7 +1201,8 @@ namespace transport
 	void NTCP2Session::SendRouterInfo ()
 	{
 		if (!IsEstablished ()) return;
-		auto riLen = i2p::context.GetRouterInfo ().GetBufferLen ();
+		auto riBuffer =  i2p::context.CopyRouterInfoBuffer ();
+		auto riLen = riBuffer->GetBufferLen ();
 		size_t payloadLen = riLen + 3 + 1 + 7; // 3 bytes block header + 1 byte RI flag + 7 bytes DateTime
 		m_NextSendBuffer = new uint8_t[payloadLen + 16 + 2 + 64]; // up to 64 bytes padding
 		// DateTime	block
@@ -1160,7 +1213,7 @@ namespace transport
 		m_NextSendBuffer[9] = eNTCP2BlkRouterInfo;
 		htobe16buf (m_NextSendBuffer + 10, riLen + 1); // size
 		m_NextSendBuffer[12] = 0; // flag
-		memcpy (m_NextSendBuffer + 13, i2p::context.GetRouterInfo ().GetBuffer (), riLen);
+		memcpy (m_NextSendBuffer + 13, riBuffer->data (), riLen); // TODO: eliminate extra copy
 		// padding block
 		auto paddingSize = CreatePaddingBlock (payloadLen, m_NextSendBuffer + 2 + payloadLen, 64);
 		payloadLen += paddingSize;
@@ -1203,8 +1256,13 @@ namespace transport
 	void NTCP2Session::PostI2NPMessages (std::vector<std::shared_ptr<I2NPMessage> > msgs)
 	{
 		if (m_IsTerminated) return;
+		bool isSemiFull = m_SendQueue.size () > NTCP2_MAX_OUTGOING_QUEUE_SIZE/2;
 		for (auto it: msgs)
-			m_SendQueue.push_back (std::move (it));
+			if (isSemiFull && it->onDrop)
+				it->Drop (); // drop earlier because we can handle it
+			else
+				m_SendQueue.push_back (std::move (it));
+		
 		if (!m_IsSending)
 			SendQueue ();
 		else if (m_SendQueue.size () > NTCP2_MAX_OUTGOING_QUEUE_SIZE)
@@ -1213,12 +1271,12 @@ namespace transport
 				GetIdentHashBase64(), " exceeds ", NTCP2_MAX_OUTGOING_QUEUE_SIZE);
 			Terminate ();
 		}
-		m_SendQueueSize = m_SendQueue.size ();
+		SetSendQueueSize (m_SendQueue.size ());
 	}
 
 	void NTCP2Session::SendLocalRouterInfo (bool update)
 	{
-		if (update || !IsOutgoing ()) // we send it in SessionConfirmed for ougoing session
+		if (update || !IsOutgoing ()) // we send it in SessionConfirmed for outgoing session
 			m_Server.GetService ().post (std::bind (&NTCP2Session::SendRouterInfo, shared_from_this ()));
 	}
 
@@ -1384,7 +1442,11 @@ namespace transport
 	void NTCP2Server::RemoveNTCP2Session (std::shared_ptr<NTCP2Session> session)
 	{
 		if (session && session->GetRemoteIdentity ())
-			m_NTCP2Sessions.erase (session->GetRemoteIdentity ()->GetIdentHash ());
+		{
+			auto it = m_NTCP2Sessions.find (session->GetRemoteIdentity ()->GetIdentHash ());
+			if (it != m_NTCP2Sessions.end () && it->second == session)
+				m_NTCP2Sessions.erase (it);
+		}	
 	}
 
 	std::shared_ptr<NTCP2Session> NTCP2Server::FindNTCP2Session (const i2p::data::IdentHash& ident)
@@ -1402,7 +1464,8 @@ namespace transport
 			LogPrint (eLogError, "NTCP2: Can't connect to unspecified address");
 			return;
 		}
-		LogPrint (eLogDebug, "NTCP2: Connecting to ", conn->GetRemoteEndpoint ());
+		LogPrint (eLogDebug, "NTCP2: Connecting to ", conn->GetRemoteEndpoint (),
+			" (", i2p::data::GetIdentHashAbbreviation (conn->GetRemoteIdentity ()->GetIdentHash ()), ")");
 		GetService ().post([this, conn]()
 			{
 				if (this->AddNTCP2Session (conn))
@@ -1458,7 +1521,8 @@ namespace transport
 		}
 		else
 		{
-			LogPrint (eLogDebug, "NTCP2: Connected to ", conn->GetRemoteEndpoint ());
+			LogPrint (eLogDebug, "NTCP2: Connected to ", conn->GetRemoteEndpoint (),
+				" (", i2p::data::GetIdentHashAbbreviation (conn->GetRemoteIdentity ()->GetIdentHash ()), ")");
 			conn->ClientLogin ();
 		}
 	}
@@ -1472,7 +1536,7 @@ namespace transport
 			if (!ec)
 			{
 				LogPrint (eLogDebug, "NTCP2: Connected from ", ep);
-				if (!i2p::util::net::IsInReservedRange(ep.address ()))
+				if (!i2p::transport::transports.IsInReservedRange(ep.address ()))
 				{
 					if (m_PendingIncomingSessions.emplace (ep.address (), conn).second)
 					{
@@ -1519,7 +1583,7 @@ namespace transport
 			if (!ec)
 			{
 				LogPrint (eLogDebug, "NTCP2: Connected from ", ep);
-				if (!i2p::util::net::IsInReservedRange(ep.address ()) ||
+				if (!i2p::transport::transports.IsInReservedRange(ep.address ()) ||
 				    i2p::util::net::IsYggdrasilAddress (ep.address ()))
 				{
 					if (m_PendingIncomingSessions.emplace (ep.address (), conn).second)
@@ -1667,47 +1731,18 @@ namespace transport
 			case eSocksProxy:
 			{
 				// TODO: support username/password auth etc
-				static const uint8_t buff[3] = {SOCKS5_VER, 0x01, 0x00};
-				boost::asio::async_write(conn->GetSocket(), boost::asio::buffer(buff, 3), boost::asio::transfer_all(),
-					[] (const boost::system::error_code & ec, std::size_t transferred)
-					{
-						(void) transferred;
-						if(ec)
-						{
-							LogPrint(eLogWarning, "NTCP2: SOCKS5 write error ", ec.message());
-						}
-					});
-				auto readbuff = std::make_shared<std::vector<uint8_t> >(2);
-				boost::asio::async_read(conn->GetSocket(), boost::asio::buffer(readbuff->data (), 2),
-					[this, readbuff, timer, conn](const boost::system::error_code & ec, std::size_t transferred)
-					{
-						if(ec)
-						{
-							LogPrint(eLogError, "NTCP2: SOCKS5 read error ", ec.message());
-							timer->cancel();
-							conn->Terminate();
-							return;
-						}
-						else if(transferred == 2)
-						{
-							if((*readbuff)[1] == 0x00)
-							{
-								AfterSocksHandshake(conn, timer);
-								return;
-							}
-							else if ((*readbuff)[1] == 0xff)
-							{
-								LogPrint(eLogError, "NTCP2: SOCKS5 proxy rejected authentication");
-								timer->cancel();
-								conn->Terminate();
-								return;
-							}
-							LogPrint(eLogError, "NTCP2:", (int)(*readbuff)[1]);
-						}
-						LogPrint(eLogError, "NTCP2: SOCKS5 server gave invalid response");
+				Socks5Handshake (conn->GetSocket(), conn->GetRemoteEndpoint (),
+					[conn, timer](const boost::system::error_code& ec)
+				    {
 						timer->cancel();
-						conn->Terminate();
-					});
+						if (!ec)
+							conn->ClientLogin();
+						else
+						{
+							LogPrint(eLogError, "NTCP2: SOCKS proxy handshake error ", ec.message());
+							conn->Terminate();	
+						}		
+					});	
 				break;
 			}
 			case eHTTPProxy:
@@ -1775,71 +1810,6 @@ namespace transport
 		}
 	}
 
-	void NTCP2Server::AfterSocksHandshake(std::shared_ptr<NTCP2Session> conn, std::shared_ptr<boost::asio::deadline_timer> timer)
-	{
-		// build request
-		size_t sz = 6; // header + port
-		auto buff = std::make_shared<std::vector<int8_t> >(256);
-		auto readbuff = std::make_shared<std::vector<int8_t> >(256);
-		(*buff)[0] = SOCKS5_VER;
-		(*buff)[1] = SOCKS5_CMD_CONNECT;
-		(*buff)[2] = 0x00;
-
-		auto& ep = conn->GetRemoteEndpoint ();
-		if(ep.address ().is_v4 ())
-		{
-			(*buff)[3] = SOCKS5_ATYP_IPV4;
-			auto addrbytes = ep.address ().to_v4().to_bytes();
-			sz += 4;
-			memcpy(buff->data () + 4, addrbytes.data(), 4);
-		}
-		else if (ep.address ().is_v6 ())
-		{
-			(*buff)[3] = SOCKS5_ATYP_IPV6;
-			auto addrbytes = ep.address ().to_v6().to_bytes();
-			sz += 16;
-			memcpy(buff->data () + 4, addrbytes.data(), 16);
-		}
-		else
-		{
-			// We mustn't really fall here because all connections are made to IP addresses
-			LogPrint(eLogError, "NTCP2: Tried to connect to unexpected address via proxy");
-			return;
-		}
-		htobe16buf(buff->data () + sz - 2, ep.port ());
-		boost::asio::async_write(conn->GetSocket(), boost::asio::buffer(buff->data (), sz), boost::asio::transfer_all(),
-			[buff](const boost::system::error_code & ec, std::size_t written)
-			{
-				if(ec)
-				{
-					LogPrint(eLogError, "NTCP2: Failed to write handshake to socks proxy ", ec.message());
-					return;
-				}
-			});
-
-		boost::asio::async_read(conn->GetSocket(), boost::asio::buffer(readbuff->data (), SOCKS5_UDP_IPV4_REQUEST_HEADER_SIZE), // read min reply size
-		    boost::asio::transfer_all(),
-			[timer, conn, readbuff](const boost::system::error_code & e, std::size_t transferred)
-			{
-				if (e)
-					LogPrint(eLogError, "NTCP2: SOCKS proxy read error ", e.message());
-				else if (!(*readbuff)[1]) // succeeded
-				{
-					boost::system::error_code ec;
-					size_t moreBytes = conn->GetSocket ().available(ec);
-					if (moreBytes) // read remaining portion of reply if ipv6 received
-						boost::asio::read (conn->GetSocket (), boost::asio::buffer(readbuff->data (), moreBytes), boost::asio::transfer_all (), ec);
-					timer->cancel();
-					conn->ClientLogin();
-					return;
-				}
-				else
-					LogPrint(eLogError, "NTCP2: Proxy reply error ", (int)(*readbuff)[1]);
-				timer->cancel();
-				conn->Terminate();
-			});
-	}
-
 	void NTCP2Server::SetLocalAddress (const boost::asio::ip::address& localAddress)
 	{
 		auto addr = std::make_shared<boost::asio::ip::tcp::endpoint>(boost::asio::ip::tcp::endpoint(localAddress, 0));

libi2pd/NTCP2.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2022, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -28,6 +28,7 @@ namespace transport
 {
 
 	const size_t NTCP2_UNENCRYPTED_FRAME_MAX_SIZE = 65519;
+	const size_t NTCP2_SEND_AFTER_FRAME_SIZE = 16386; // send frame when exceeds this size
 	const size_t NTCP2_SESSION_REQUEST_MAX_SIZE = 287;
 	const size_t NTCP2_SESSION_CREATED_MAX_SIZE = 287;
 	const int NTCP2_MAX_PADDING_RATIO = 6; // in %
@@ -266,8 +267,7 @@ namespace transport
 
 			void HandleConnect (const boost::system::error_code& ecode, std::shared_ptr<NTCP2Session> conn, std::shared_ptr<boost::asio::deadline_timer> timer);
 			void HandleProxyConnect(const boost::system::error_code& ecode, std::shared_ptr<NTCP2Session> conn, std::shared_ptr<boost::asio::deadline_timer> timer);
-			void AfterSocksHandshake(std::shared_ptr<NTCP2Session> conn, std::shared_ptr<boost::asio::deadline_timer> timer);
-
+			
 			// timer
 			void ScheduleTermination ();
 			void HandleTerminationTimer (const boost::system::error_code& ecode);

libi2pd/NetDb.hpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -10,11 +10,12 @@
 #define NETDB_H__
 // this file is called NetDb.hpp to resolve conflict with libc's netdb.h on case insensitive fs
 #include <inttypes.h>
-#include <set>
+#include <unordered_set>
 #include <unordered_map>
 #include <string>
 #include <thread>
 #include <mutex>
+#include <future>
 
 #include "Base.h"
 #include "Gzip.h"
@@ -38,7 +39,10 @@ namespace data
 {
 	const int NETDB_MIN_ROUTERS = 90;
 	const int NETDB_MIN_FLOODFILLS = 5;
-	const int NETDB_NUM_FLOODFILLS_THRESHOLD = 1500;
+	const int NETDB_NUM_FLOODFILLS_THRESHOLD = 1000;
+	const int NETDB_NUM_ROUTERS_THRESHOLD = 4*NETDB_NUM_FLOODFILLS_THRESHOLD;
+	const int NETDB_TUNNEL_CREATION_RATE_THRESHOLD = 10; // in %
+	const int NETDB_CHECK_FOR_EXPIRATION_UPTIME = 600; // 10 minutes, in seconds  
 	const int NETDB_FLOODFILL_EXPIRATION_TIMEOUT = 60 * 60; // 1 hour, in seconds
 	const int NETDB_MIN_EXPIRATION_TIMEOUT = 90 * 60; // 1.5 hours
 	const int NETDB_MAX_EXPIRATION_TIMEOUT = 27 * 60 * 60; // 27 hours
@@ -47,6 +51,9 @@ namespace data
 	const int NETDB_MIN_HIGHBANDWIDTH_VERSION = MAKE_VERSION_NUMBER(0, 9, 51); // 0.9.51
 	const int NETDB_MIN_FLOODFILL_VERSION = MAKE_VERSION_NUMBER(0, 9, 51); // 0.9.51
 	const int NETDB_MIN_SHORT_TUNNEL_BUILD_VERSION = MAKE_VERSION_NUMBER(0, 9, 51); // 0.9.51
+	const size_t NETDB_MAX_NUM_SEARCH_REPLY_PEER_HASHES = 16;
+	const size_t NETDB_MAX_EXPLORATORY_SELECTION_SIZE = 500;
+	const int NETDB_EXPLORATORY_SELECTION_UPDATE_INTERVAL = 82; // in seconds. for floodfill
 
 	/** function for visiting a leaseset stored in a floodfill */
 	typedef std::function<void(const IdentHash, std::shared_ptr<LeaseSet>)> LeaseSetVisitor;
@@ -76,27 +83,22 @@ namespace data
 			std::shared_ptr<RouterProfile> FindRouterProfile (const IdentHash& ident) const;
 
 			void RequestDestination (const IdentHash& destination, RequestedDestination::RequestComplete requestComplete = nullptr, bool direct = true);
-			void RequestDestinationFrom (const IdentHash& destination, const IdentHash & from, bool exploritory, RequestedDestination::RequestComplete requestComplete = nullptr);
-
-			void HandleDatabaseStoreMsg (std::shared_ptr<const I2NPMessage> msg);
-			void HandleDatabaseSearchReplyMsg (std::shared_ptr<const I2NPMessage> msg);
-			void HandleDatabaseLookupMsg (std::shared_ptr<const I2NPMessage> msg);
-			void HandleNTCP2RouterInfoMsg (std::shared_ptr<const I2NPMessage> m);
-
+			
 			std::shared_ptr<const RouterInfo> GetRandomRouter () const;
-			std::shared_ptr<const RouterInfo> GetRandomRouter (std::shared_ptr<const RouterInfo> compatibleWith, bool reverse) const;
-			std::shared_ptr<const RouterInfo> GetHighBandwidthRandomRouter (std::shared_ptr<const RouterInfo> compatibleWith, bool reverse) const;
-			std::shared_ptr<const RouterInfo> GetRandomSSU2PeerTestRouter (bool v4, const std::set<IdentHash>& excluded) const;
-			std::shared_ptr<const RouterInfo> GetRandomSSU2Introducer (bool v4, const std::set<IdentHash>& excluded) const;
-			std::shared_ptr<const RouterInfo> GetClosestFloodfill (const IdentHash& destination, const std::set<IdentHash>& excluded) const;
+			std::shared_ptr<const RouterInfo> GetRandomRouter (std::shared_ptr<const RouterInfo> compatibleWith, bool reverse, bool endpoint) const;
+			std::shared_ptr<const RouterInfo> GetHighBandwidthRandomRouter (std::shared_ptr<const RouterInfo> compatibleWith, bool reverse, bool endpoint) const;
+			std::shared_ptr<const RouterInfo> GetRandomSSU2PeerTestRouter (bool v4, const std::unordered_set<IdentHash>& excluded) const;
+			std::shared_ptr<const RouterInfo> GetRandomSSU2Introducer (bool v4, const std::unordered_set<IdentHash>& excluded) const;
+			std::shared_ptr<const RouterInfo> GetClosestFloodfill (const IdentHash& destination, const std::unordered_set<IdentHash>& excluded) const;
 			std::vector<IdentHash> GetClosestFloodfills (const IdentHash& destination, size_t num,
-				std::set<IdentHash>& excluded, bool closeThanUsOnly = false) const;
-			std::shared_ptr<const RouterInfo> GetClosestNonFloodfill (const IdentHash& destination, const std::set<IdentHash>& excluded) const;
+				std::unordered_set<IdentHash>& excluded, bool closeThanUsOnly = false) const;
+			std::vector<IdentHash> GetExploratoryNonFloodfill (const IdentHash& destination, size_t num, const std::unordered_set<IdentHash>& excluded);
 			std::shared_ptr<const RouterInfo> GetRandomRouterInFamily (FamilyID fam) const;
 			void SetUnreachable (const IdentHash& ident, bool unreachable);
 			void ExcludeReachableTransports (const IdentHash& ident, RouterInfo::CompatibleTransports transports);
 
 			void PostI2NPMsg (std::shared_ptr<const I2NPMessage> msg);
+			void PostDatabaseSearchReplyMsg (std::shared_ptr<const I2NPMessage> msg); // to NetdbReq thread
 
 			void Reseed ();
 			Families& GetFamilies () { return m_Families; };
@@ -116,7 +118,11 @@ namespace data
 			size_t VisitRandomRouterInfos(RouterInfoFilter f, RouterInfoVisitor v, size_t n);
 
 			void ClearRouterInfos () { m_RouterInfos.clear (); };
-			std::shared_ptr<RouterInfo::Buffer> NewRouterInfoBuffer () { return m_RouterInfoBuffersPool.AcquireSharedMt (); };
+			template<typename... TArgs>
+			std::shared_ptr<RouterInfo::Buffer> NewRouterInfoBuffer (TArgs&&... args) 
+			{ 
+				return m_RouterInfoBuffersPool.AcquireSharedMt (std::forward<TArgs>(args)...); 
+			}
 			bool PopulateRouterInfoBuffer (std::shared_ptr<RouterInfo> r);
 			std::shared_ptr<RouterInfo::Address> NewRouterInfoAddress () { return m_RouterInfoAddressesPool.AcquireSharedMt (); };
 			boost::shared_ptr<RouterInfo::Addresses> NewRouterInfoAddresses ()
@@ -128,16 +134,16 @@ namespace data
 			};
 			std::shared_ptr<Lease> NewLease (const Lease& lease) { return m_LeasesPool.AcquireSharedMt (lease); };
 			std::shared_ptr<IdentityEx> NewIdentity (const uint8_t * buf, size_t len) { return m_IdentitiesPool.AcquireSharedMt (buf, len); };
-
-			uint32_t GetPublishReplyToken () const { return m_PublishReplyToken; };
+			std::shared_ptr<RouterProfile> NewRouterProfile () { return m_RouterProfilesPool.AcquireSharedMt (); };
 
 		private:
 
 			void Load ();
 			bool LoadRouterInfo (const std::string& path, uint64_t ts);
 			void SaveUpdated ();
-			void Run (); // exploratory thread
-			void Explore (int numDestinations);
+			void PersistRouters (std::list<std::pair<std::string, std::shared_ptr<RouterInfo::Buffer> > >&& update, 
+				std::list<std::string>&& remove);
+			void Run (); 
 			void Flood (const IdentHash& ident, std::shared_ptr<I2NPMessage> floodMsg);
 			void ManageRouterInfos ();
 			void ManageLeaseSets ();
@@ -151,6 +157,10 @@ namespace data
 			template<typename Filter>
 			std::shared_ptr<const RouterInfo> GetRandomRouter (Filter filter) const;
 
+			void HandleDatabaseStoreMsg (std::shared_ptr<const I2NPMessage> msg);
+			void HandleDatabaseLookupMsg (std::shared_ptr<const I2NPMessage> msg);
+			void HandleNTCP2RouterInfoMsg (std::shared_ptr<const I2NPMessage> m);
+
 		private:
 
 			mutable std::mutex m_LeaseSetsMutex;
@@ -169,22 +179,20 @@ namespace data
 			Families m_Families;
 			i2p::fs::HashedStorage m_Storage;
 
-			friend class NetDbRequests;
-			NetDbRequests m_Requests;
+			std::shared_ptr<NetDbRequests> m_Requests;
 
 			bool m_PersistProfiles;
+			std::future<void> m_SavingProfiles, m_DeletingProfiles, m_PersistingRouters;
 
-			/** router info we are bootstrapping from or nullptr if we are not currently doing that*/
-			std::shared_ptr<RouterInfo> m_FloodfillBootstrap;
-
-			std::set<IdentHash> m_PublishExcluded;
-			uint32_t m_PublishReplyToken = 0;
+			std::vector<std::shared_ptr<const RouterInfo> > m_ExploratorySelection;
+			uint64_t m_LastExploratorySelectionUpdateTime; // in monotonic seconds
 
 			i2p::util::MemoryPoolMt<RouterInfo::Buffer> m_RouterInfoBuffersPool;
 			i2p::util::MemoryPoolMt<RouterInfo::Address> m_RouterInfoAddressesPool;
 			i2p::util::MemoryPoolMt<RouterInfo::Addresses> m_RouterInfoAddressVectorsPool;
 			i2p::util::MemoryPoolMt<Lease> m_LeasesPool;
 			i2p::util::MemoryPoolMt<IdentityEx> m_IdentitiesPool;
+			i2p::util::MemoryPoolMt<RouterProfile> m_RouterProfilesPool;
 	};
 
 	extern NetDb netdb;

libi2pd/NetDbRequests.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -11,11 +11,26 @@
 #include "Transports.h"
 #include "NetDb.hpp"
 #include "NetDbRequests.h"
+#include "ECIESX25519AEADRatchetSession.h"
+#include "RouterContext.h"
 
 namespace i2p
 {
 namespace data
 {
+	RequestedDestination::RequestedDestination (const IdentHash& destination, bool isExploratory, bool direct):
+		m_Destination (destination), m_IsExploratory (isExploratory), m_IsDirect (direct), m_IsActive (true),
+		m_CreationTime (i2p::util::GetSecondsSinceEpoch ()), m_LastRequestTime (0), m_NumAttempts (0)
+	{
+		if (i2p::context.IsFloodfill ())
+			m_ExcludedPeers.insert (i2p::context.GetIdentHash ()); // exclude self if floodfill
+	}
+		
+	RequestedDestination::~RequestedDestination () 
+	{ 
+		InvokeRequestComplete (nullptr);
+	}
+		
 	std::shared_ptr<I2NPMessage> RequestedDestination::CreateRequestMessage (std::shared_ptr<const RouterInfo> router,
 		std::shared_ptr<const i2p::tunnel::InboundTunnel> replyTunnel)
 	{
@@ -28,7 +43,8 @@ namespace data
 			msg = i2p::CreateRouterInfoDatabaseLookupMsg(m_Destination, i2p::context.GetIdentHash(), 0, m_IsExploratory, &m_ExcludedPeers);
 		if(router)
 			m_ExcludedPeers.insert (router->GetIdentHash ());
-		m_CreationTime = i2p::util::GetSecondsSinceEpoch ();
+		m_LastRequestTime = i2p::util::GetSecondsSinceEpoch ();
+		m_NumAttempts++;
 		return msg;
 	}
 
@@ -37,80 +53,153 @@ namespace data
 		auto msg = i2p::CreateRouterInfoDatabaseLookupMsg (m_Destination,
 			i2p::context.GetRouterInfo ().GetIdentHash () , 0, false, &m_ExcludedPeers);
 		m_ExcludedPeers.insert (floodfill);
-		m_CreationTime = i2p::util::GetSecondsSinceEpoch ();
+		m_NumAttempts++;
+		m_LastRequestTime = i2p::util::GetSecondsSinceEpoch ();
 		return msg;
 	}
 
+	bool RequestedDestination::IsExcluded (const IdentHash& ident) const 
+	{ 
+		return m_ExcludedPeers.count (ident); 
+	}
+		
 	void RequestedDestination::ClearExcludedPeers ()
 	{
 		m_ExcludedPeers.clear ();
 	}
 
+	void RequestedDestination::InvokeRequestComplete (std::shared_ptr<RouterInfo> r)
+	{
+		if (!m_RequestComplete.empty ())
+		{	
+			for (auto it: m_RequestComplete)
+				if (it != nullptr) it (r);
+			m_RequestComplete.clear ();
+		}	
+	}	
+		
 	void RequestedDestination::Success (std::shared_ptr<RouterInfo> r)
 	{
-		if (m_RequestComplete)
-		{
-			m_RequestComplete (r);
-			m_RequestComplete = nullptr;
-		}
+		if (m_IsActive)
+		{	
+			m_IsActive = false;
+			InvokeRequestComplete (r);
+		}	
 	}
 
 	void RequestedDestination::Fail ()
 	{
-		if (m_RequestComplete)
-		{
-			m_RequestComplete (nullptr);
-			m_RequestComplete = nullptr;
-		}
+		if (m_IsActive)
+		{	
+			m_IsActive = false;
+			InvokeRequestComplete (nullptr);
+		}	
 	}
 
+	NetDbRequests::NetDbRequests ():
+		RunnableServiceWithWork ("NetDbReq"),
+		m_ManageRequestsTimer (GetIOService ()), m_ExploratoryTimer (GetIOService ()),
+		m_CleanupTimer (GetIOService ()), m_DiscoveredRoutersTimer (GetIOService ())
+	{
+	}
+		
+	NetDbRequests::~NetDbRequests ()
+	{
+		Stop ();
+	}	
+		
 	void NetDbRequests::Start ()
 	{
+		if (!IsRunning ())
+		{	
+			StartIOService ();
+			ScheduleManageRequests ();
+			ScheduleCleanup ();
+			if (!i2p::context.IsHidden ())
+				ScheduleExploratory (EXPLORATORY_REQUEST_INTERVAL);
+		}	
 	}
 
 	void NetDbRequests::Stop ()
 	{
-		m_RequestedDestinations.clear ();
+		if (IsRunning ())
+		{	
+			m_ManageRequestsTimer.cancel ();
+			m_ExploratoryTimer.cancel ();
+			m_CleanupTimer.cancel ();
+			StopIOService ();
+		
+			m_RequestedDestinations.clear ();
+			m_RequestedDestinationsPool.CleanUpMt ();
+		}	
 	}
 
-
-	std::shared_ptr<RequestedDestination> NetDbRequests::CreateRequest (const IdentHash& destination, bool isExploratory, RequestedDestination::RequestComplete requestComplete)
+	void NetDbRequests::ScheduleCleanup ()
 	{
-		// request RouterInfo directly
-		auto dest = std::make_shared<RequestedDestination> (destination, isExploratory);
-		dest->SetRequestComplete (requestComplete);
+		m_CleanupTimer.expires_from_now (boost::posix_time::seconds(REQUESTED_DESTINATIONS_POOL_CLEANUP_INTERVAL));
+		m_CleanupTimer.async_wait (std::bind (&NetDbRequests::HandleCleanupTimer,
+			this, std::placeholders::_1));
+	}	
+		
+	void NetDbRequests::HandleCleanupTimer (const boost::system::error_code& ecode)
+	{		
+		if (ecode != boost::asio::error::operation_aborted)
 		{
-			std::unique_lock<std::mutex> l(m_RequestedDestinationsMutex);
-			if (!m_RequestedDestinations.insert (std::make_pair (destination, dest)).second) // not inserted
-				return nullptr;
-		}
+			m_RequestedDestinationsPool.CleanUpMt ();
+			ScheduleCleanup ();
+		}	
+	}
+		
+	std::shared_ptr<RequestedDestination> NetDbRequests::CreateRequest (const IdentHash& destination, 
+		bool isExploratory, bool direct, RequestedDestination::RequestComplete requestComplete)
+	{
+		// request RouterInfo directly
+		auto dest = m_RequestedDestinationsPool.AcquireSharedMt (destination, isExploratory, direct);
+		if (requestComplete)
+			dest->AddRequestComplete (requestComplete);
+		
+		auto ret = m_RequestedDestinations.emplace (destination, dest);
+		if (!ret.second) // not inserted
+		{	
+			dest->ResetRequestComplete (); // don't call requestComplete in destructor	
+			dest = ret.first->second; // existing one
+			if (requestComplete)
+			{	
+				if (dest->IsActive ())
+					dest->AddRequestComplete (requestComplete);
+				else
+					requestComplete (nullptr);
+			}	
+			return nullptr;
+		}	
 		return dest;
 	}
 
 	void NetDbRequests::RequestComplete (const IdentHash& ident, std::shared_ptr<RouterInfo> r)
 	{
-		std::shared_ptr<RequestedDestination> request;
-		{
-			std::unique_lock<std::mutex> l(m_RequestedDestinationsMutex);
-			auto it = m_RequestedDestinations.find (ident);
-			if (it != m_RequestedDestinations.end ())
-			{
-				request = it->second;
-				m_RequestedDestinations.erase (it);
-			}
-		}
-		if (request)
-		{
-			if (r)
-				request->Success (r);
-			else
-				request->Fail ();
-		}
+		GetIOService ().post ([this, ident, r]()
+			{                      
+				std::shared_ptr<RequestedDestination> request;
+				auto it = m_RequestedDestinations.find (ident);
+				if (it != m_RequestedDestinations.end ())
+				{
+					request = it->second;
+					if (request->IsExploratory ())
+						m_RequestedDestinations.erase (it);
+					// otherwise cache for a while
+				}
+				if (request)
+				{
+					if (r)
+						request->Success (r);
+					else
+						request->Fail ();
+				}
+			});
 	}
 
 	std::shared_ptr<RequestedDestination> NetDbRequests::FindRequest (const IdentHash& ident) const
 	{
-		std::unique_lock<std::mutex> l(m_RequestedDestinationsMutex);
 		auto it = m_RequestedDestinations.find (ident);
 		if (it != m_RequestedDestinations.end ())
 			return it->second;
@@ -120,49 +209,345 @@ namespace data
 	void NetDbRequests::ManageRequests ()
 	{
 		uint64_t ts = i2p::util::GetSecondsSinceEpoch ();
-		std::unique_lock<std::mutex> l(m_RequestedDestinationsMutex);
 		for (auto it = m_RequestedDestinations.begin (); it != m_RequestedDestinations.end ();)
 		{
 			auto& dest = it->second;
-			bool done = false;
-			if (ts < dest->GetCreationTime () + 60) // request is worthless after 1 minute
-			{
-				if (ts > dest->GetCreationTime () + 5) // no response for 5 seconds
-				{
-					auto count = dest->GetExcludedPeers ().size ();
-					if (!dest->IsExploratory () && count < 7)
+			if (dest->IsActive () || ts < dest->GetCreationTime () + REQUEST_CACHE_TIME)
+			{	
+				if (!dest->IsExploratory ())
+				{	
+					// regular request
+					bool done = false;
+					if (ts < dest->GetCreationTime () + MAX_REQUEST_TIME)
+					{
+						if (ts > dest->GetLastRequestTime () + MIN_REQUEST_TIME) // try next floodfill if no response after min interval
+							done = !SendNextRequest (dest);
+					}
+					else // request is expired
+						done = true;
+					if (done)
+						dest->Fail ();
+					it++;
+				}	
+				else
+				{	
+					// exploratory
+					if (ts >= dest->GetCreationTime () + MAX_EXPLORATORY_REQUEST_TIME)
 					{
-						auto pool = i2p::tunnel::tunnels.GetExploratoryPool ();
+						dest->Fail ();
+						it = m_RequestedDestinations.erase (it); // delete expired exploratory request right a way
+					}	
+					else
+						it++;
+				}	
+			}	
+			else
+				it = m_RequestedDestinations.erase (it);
+		}
+	}
+
+	bool NetDbRequests::SendNextRequest (std::shared_ptr<RequestedDestination> dest)
+	{
+		if (!dest || !dest->IsActive ()) return false;
+		bool ret = true;
+		auto count = dest->GetNumAttempts ();
+		if (!dest->IsExploratory () && count < MAX_NUM_REQUEST_ATTEMPTS)
+		{
+			auto nextFloodfill = netdb.GetClosestFloodfill (dest->GetDestination (), dest->GetExcludedPeers ());
+			if (nextFloodfill)
+			{	
+				bool direct = dest->IsDirect ();
+				if (direct && !nextFloodfill->IsReachableFrom (i2p::context.GetRouterInfo ()) &&
+					!i2p::transport::transports.IsConnected (nextFloodfill->GetIdentHash ()))
+					direct = false; // floodfill can't be reached directly
+				auto s = shared_from_this ();
+				auto onDrop = [s, dest]()
+					{
+						if (dest->IsActive ())
+						{
+							s->GetIOService ().post ([s, dest]()
+								{
+									if (dest->IsActive ()) s->SendNextRequest (dest);
+								});
+						}	
+					};		
+				if (direct)
+				{
+					if (CheckLogLevel (eLogDebug))
+						LogPrint (eLogDebug, "NetDbReq: Try ", dest->GetDestination ().ToBase64 (), " at ", count, " floodfill ", nextFloodfill->GetIdentHash ().ToBase64 (), " directly");
+					auto msg = dest->CreateRequestMessage (nextFloodfill->GetIdentHash ());
+					msg->onDrop = onDrop; 
+					i2p::transport::transports.SendMessage (nextFloodfill->GetIdentHash (), msg);
+				}	
+				else
+				{	
+					auto pool = i2p::tunnel::tunnels.GetExploratoryPool ();
+					if (pool)
+					{	
 						auto outbound = pool->GetNextOutboundTunnel ();
 						auto inbound = pool->GetNextInboundTunnel ();
-						auto nextFloodfill = netdb.GetClosestFloodfill (dest->GetDestination (), dest->GetExcludedPeers ());
 						if (nextFloodfill && outbound && inbound)
+						{
+							if (CheckLogLevel (eLogDebug))
+								LogPrint (eLogDebug, "NetDbReq: Try ", dest->GetDestination ().ToBase64 (), " at ", count, " floodfill ", nextFloodfill->GetIdentHash ().ToBase64 (), " through tunnels");
+							auto msg = dest->CreateRequestMessage (nextFloodfill, inbound); 
+							msg->onDrop = onDrop;
 							outbound->SendTunnelDataMsgTo (nextFloodfill->GetIdentHash (), 0,
-								dest->CreateRequestMessage (nextFloodfill, inbound));
+								i2p::garlic::WrapECIESX25519MessageForRouter (msg, nextFloodfill->GetIdentity ()->GetEncryptionPublicKey ()));
+						}	
 						else
 						{
-							done = true;
+							ret = false;
 							if (!inbound) LogPrint (eLogWarning, "NetDbReq: No inbound tunnels");
 							if (!outbound) LogPrint (eLogWarning, "NetDbReq: No outbound tunnels");
-							if (!nextFloodfill) LogPrint (eLogWarning, "NetDbReq: No more floodfills");
 						}
-					}
+					}	
 					else
 					{
-						if (!dest->IsExploratory ())
-							LogPrint (eLogWarning, "NetDbReq: ", dest->GetDestination ().ToBase64 (), " not found after 7 attempts");
-						done = true;
-					}
-				}
+						ret = false;
+						LogPrint (eLogWarning, "NetDbReq: Exploratory pool is not ready");
+					}	
+				}		
 			}
-			else // delete obsolete request
-				done = true;
+			else
+			{
+				ret = false;
+				LogPrint (eLogWarning, "NetDbReq: No more floodfills for ", dest->GetDestination ().ToBase64 (), " after ", count, "attempts");
+			}	
+		}
+		else
+		{
+			if (!dest->IsExploratory ())
+				LogPrint (eLogWarning, "NetDbReq: ", dest->GetDestination ().ToBase64 (), " not found after ", MAX_NUM_REQUEST_ATTEMPTS," attempts");
+			ret = false;
+		}
+		return ret;
+	}	
 
-			if (done)
-				it = m_RequestedDestinations.erase (it);
+	void NetDbRequests::ScheduleManageRequests ()
+	{
+		m_ManageRequestsTimer.expires_from_now (boost::posix_time::seconds(MANAGE_REQUESTS_INTERVAL));
+		m_ManageRequestsTimer.async_wait (std::bind (&NetDbRequests::HandleManageRequestsTimer,
+			this, std::placeholders::_1));
+	}
+		
+	void NetDbRequests::HandleManageRequestsTimer (const boost::system::error_code& ecode)
+	{
+		if (ecode != boost::asio::error::operation_aborted)
+		{
+			if (i2p::tunnel::tunnels.GetExploratoryPool ()) // expolratory pool is ready?
+				ManageRequests ();
+			ScheduleManageRequests ();
+		}	
+	}	
+
+	void NetDbRequests::PostDatabaseSearchReplyMsg (std::shared_ptr<const I2NPMessage> msg)
+	{
+		GetIOService ().post ([this, msg]()
+			{
+				HandleDatabaseSearchReplyMsg (msg);
+			});	
+	}	
+
+	void NetDbRequests::HandleDatabaseSearchReplyMsg (std::shared_ptr<const I2NPMessage> msg)
+	{
+		const uint8_t * buf = msg->GetPayload ();
+		char key[48];
+		int l = i2p::data::ByteStreamToBase64 (buf, 32, key, 48);
+		key[l] = 0;
+		size_t num = buf[32]; // num
+		LogPrint (eLogDebug, "NetDbReq: DatabaseSearchReply for ", key, " num=", num);
+		IdentHash ident (buf);
+		bool isExploratory = false;
+		auto dest = FindRequest (ident);
+		if (dest && dest->IsActive ())
+		{
+			isExploratory = dest->IsExploratory ();
+			if (!isExploratory && (num > 0 || dest->GetNumAttempts () < 3)) // before 3-rd attempt might be just bad luck
+			{	
+				// try to send next requests
+				if (!SendNextRequest (dest))
+					RequestComplete (ident, nullptr);
+			}	
+			else
+				// no more requests for destination possible. delete it
+				RequestComplete (ident, nullptr);
+		}
+		else /*if (!m_FloodfillBootstrap)*/
+		{	
+			LogPrint (eLogInfo, "NetDbReq: Unsolicited or late database search reply for ", key);
+			return;
+		}	
+
+		// try responses
+		if (num > NETDB_MAX_NUM_SEARCH_REPLY_PEER_HASHES)
+		{
+			LogPrint (eLogWarning, "NetDbReq: Too many peer hashes ", num, " in database search reply, Reduced to ", NETDB_MAX_NUM_SEARCH_REPLY_PEER_HASHES);
+			num = NETDB_MAX_NUM_SEARCH_REPLY_PEER_HASHES;
+		}	
+		if (isExploratory && !m_DiscoveredRouterHashes.empty ())
+		{
+			// request outstanding routers
+			for (auto it: m_DiscoveredRouterHashes)
+				RequestRouter (it);
+			m_DiscoveredRouterHashes.clear ();
+			m_DiscoveredRoutersTimer.cancel ();
+		}	
+		for (size_t i = 0; i < num; i++)
+		{
+			IdentHash router (buf + 33 + i*32);
+			if (CheckLogLevel (eLogDebug))
+				LogPrint (eLogDebug, "NetDbReq: ", i, ": ", router.ToBase64 ());
+
+			if (isExploratory)
+				// postpone request
+				m_DiscoveredRouterHashes.push_back (router);
+			else	
+				// send request right a way
+				RequestRouter (router);
+		}
+		if (isExploratory && !m_DiscoveredRouterHashes.empty ())
+			ScheduleDiscoveredRoutersRequest (); 	
+	}	
+
+	void NetDbRequests::RequestRouter (const IdentHash& router)
+	{		
+		auto r = netdb.FindRouter (router);
+		if (!r || i2p::util::GetMillisecondsSinceEpoch () > r->GetTimestamp () + 3600*1000LL)
+		{
+			// router with ident not found or too old (1 hour)
+			LogPrint (eLogDebug, "NetDbReq: Found new/outdated router. Requesting RouterInfo...");
+			if (!IsRouterBanned (router))
+				RequestDestination (router, nullptr, true);
+			else
+				LogPrint (eLogDebug, "NetDbReq: Router ", router.ToBase64 (), " is banned. Skipped");
+		}
+		else
+			LogPrint (eLogDebug, "NetDbReq: [:|||:]");
+	}	
+		
+	void NetDbRequests::PostRequestDestination (const IdentHash& destination, 
+		const RequestedDestination::RequestComplete& requestComplete, bool direct)
+	{
+		GetIOService ().post ([this, destination, requestComplete, direct]()
+			{
+				RequestDestination (destination, requestComplete, direct);
+			});	
+	}
+		
+	void NetDbRequests::RequestDestination (const IdentHash& destination, const RequestedDestination::RequestComplete& requestComplete, bool direct)
+	{
+		auto dest = CreateRequest (destination, false, direct, requestComplete); // non-exploratory
+		if (dest)
+		{	
+			if (!SendNextRequest (dest))
+				RequestComplete (destination, nullptr);
+		}	
+		else
+			LogPrint (eLogWarning, "NetDbReq: Destination ", destination.ToBase64(), " is requested already or cached");
+	}	
+
+	void NetDbRequests::Explore (int numDestinations)
+	{
+		// new requests
+		auto exploratoryPool = i2p::tunnel::tunnels.GetExploratoryPool ();
+		auto outbound = exploratoryPool ? exploratoryPool->GetNextOutboundTunnel () : nullptr;
+		auto inbound = exploratoryPool ? exploratoryPool->GetNextInboundTunnel () : nullptr;
+		bool throughTunnels = outbound && inbound;
+
+		uint8_t randomHash[32];
+		std::vector<i2p::tunnel::TunnelMessageBlock> msgs;
+		LogPrint (eLogInfo, "NetDbReq: Exploring new ", numDestinations, " routers ...");
+		for (int i = 0; i < numDestinations; i++)
+		{
+			RAND_bytes (randomHash, 32);
+			auto dest = CreateRequest (randomHash, true, !throughTunnels); // exploratory
+			if (!dest)
+			{
+				LogPrint (eLogWarning, "NetDbReq: Exploratory destination is requested already");
+				return;
+			}
+			auto floodfill = netdb.GetClosestFloodfill (randomHash, dest->GetExcludedPeers ());
+			if (floodfill)
+			{
+				if (i2p::transport::transports.IsConnected (floodfill->GetIdentHash ()))
+					throughTunnels = false;
+				if (throughTunnels)
+				{
+					msgs.push_back (i2p::tunnel::TunnelMessageBlock
+						{
+							i2p::tunnel::eDeliveryTypeRouter,
+							floodfill->GetIdentHash (), 0,
+							CreateDatabaseStoreMsg () // tell floodfill about us
+						});
+					msgs.push_back (i2p::tunnel::TunnelMessageBlock
+						{
+							i2p::tunnel::eDeliveryTypeRouter,
+							floodfill->GetIdentHash (), 0,
+							dest->CreateRequestMessage (floodfill, inbound) // explore
+						});
+				}
+				else
+					i2p::transport::transports.SendMessage (floodfill->GetIdentHash (), dest->CreateRequestMessage (floodfill->GetIdentHash ()));
+			}
 			else
-				++it;
+				RequestComplete (randomHash, nullptr);
 		}
+		if (throughTunnels && msgs.size () > 0)
+			outbound->SendTunnelDataMsgs (msgs);
+	}	
+
+	void NetDbRequests::ScheduleExploratory (uint64_t interval)
+	{
+		m_ExploratoryTimer.expires_from_now (boost::posix_time::seconds(interval));
+		m_ExploratoryTimer.async_wait (std::bind (&NetDbRequests::HandleExploratoryTimer,
+			this, std::placeholders::_1));
 	}
+		
+	void NetDbRequests::HandleExploratoryTimer (const boost::system::error_code& ecode)
+	{
+		if (ecode != boost::asio::error::operation_aborted)
+		{
+			auto numRouters = netdb.GetNumRouters ();
+			auto nextExploratoryInterval = numRouters < 2500 ? (EXPLORATORY_REQUEST_INTERVAL + rand () % EXPLORATORY_REQUEST_INTERVAL)/2 :
+				EXPLORATORY_REQUEST_INTERVAL + rand () % EXPLORATORY_REQUEST_INTERVAL_VARIANCE;
+			if (numRouters)
+			{	
+				if (i2p::transport::transports.IsOnline () && i2p::transport::transports.IsRunning ()) 
+				{	
+					// explore only if online
+					numRouters = 800/numRouters;
+					if (numRouters < 1) numRouters = 1;
+					if (numRouters > 9) numRouters = 9;
+					Explore (numRouters);
+				}	
+			}	
+			else
+				LogPrint (eLogError, "NetDbReq: No known routers, reseed seems to be totally failed");
+			ScheduleExploratory (nextExploratoryInterval);
+		}	
+	}	
+
+	void NetDbRequests::ScheduleDiscoveredRoutersRequest ()
+	{
+		m_DiscoveredRoutersTimer.expires_from_now (boost::posix_time::milliseconds(
+			DISCOVERED_REQUEST_INTERVAL + rand () % DISCOVERED_REQUEST_INTERVAL_VARIANCE));
+		m_DiscoveredRoutersTimer.async_wait (std::bind (&NetDbRequests::HandleDiscoveredRoutersTimer,
+			this, std::placeholders::_1));
+	}	
+
+	void NetDbRequests::HandleDiscoveredRoutersTimer (const boost::system::error_code& ecode)
+	{
+		if (ecode != boost::asio::error::operation_aborted)
+		{
+			if (!m_DiscoveredRouterHashes.empty ())
+			{
+				RequestRouter (m_DiscoveredRouterHashes.front ());
+				m_DiscoveredRouterHashes.pop_front ();
+				if (!m_DiscoveredRouterHashes.empty ()) // more hashes to request
+					ScheduleDiscoveredRoutersRequest ();
+			}	
+		}	
+	}	
 }
 }

libi2pd/NetDbRequests.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2020, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -9,66 +9,116 @@
 #ifndef NETDB_REQUESTS_H__
 #define NETDB_REQUESTS_H__
 
+#include <inttypes.h>
 #include <memory>
-#include <set>
-#include <map>
+#include <unordered_set>
+#include <unordered_map>
+#include <list>
 #include "Identity.h"
 #include "RouterInfo.h"
+#include "util.h"
 
 namespace i2p
 {
 namespace data
 {
+	const int MAX_NUM_REQUEST_ATTEMPTS = 5;
+	const uint64_t MANAGE_REQUESTS_INTERVAL = 1; // in seconds
+	const uint64_t MIN_REQUEST_TIME = 5; // in seconds
+	const uint64_t MAX_REQUEST_TIME = MAX_NUM_REQUEST_ATTEMPTS * (MIN_REQUEST_TIME + MANAGE_REQUESTS_INTERVAL);
+	const uint64_t EXPLORATORY_REQUEST_INTERVAL = 55; // in seconds
+	const uint64_t EXPLORATORY_REQUEST_INTERVAL_VARIANCE = 170; // in seconds 
+	const uint64_t DISCOVERED_REQUEST_INTERVAL = 360; // in milliseconds
+	const uint64_t DISCOVERED_REQUEST_INTERVAL_VARIANCE = 540; // in milliseconds
+	const uint64_t MAX_EXPLORATORY_REQUEST_TIME = 30; // in seconds
+	const uint64_t REQUEST_CACHE_TIME = MAX_REQUEST_TIME + 40; // in seconds
+	const uint64_t REQUESTED_DESTINATIONS_POOL_CLEANUP_INTERVAL = 191; // in seconds
+	
 	class RequestedDestination
 	{
 		public:
 
 			typedef std::function<void (std::shared_ptr<RouterInfo>)> RequestComplete;
 
-			RequestedDestination (const IdentHash& destination, bool isExploratory = false):
-				m_Destination (destination), m_IsExploratory (isExploratory), m_CreationTime (0) {};
-			~RequestedDestination () { if (m_RequestComplete) m_RequestComplete (nullptr); };
+			RequestedDestination (const IdentHash& destination, bool isExploratory = false, bool direct = true);
+			~RequestedDestination ();
 
 			const IdentHash& GetDestination () const { return m_Destination; };
-			int GetNumExcludedPeers () const { return m_ExcludedPeers.size (); };
-			const std::set<IdentHash>& GetExcludedPeers () { return m_ExcludedPeers; };
+			const std::unordered_set<IdentHash>& GetExcludedPeers () const { return m_ExcludedPeers; };
+			int GetNumAttempts () const { return m_NumAttempts; };
 			void ClearExcludedPeers ();
 			bool IsExploratory () const { return m_IsExploratory; };
-			bool IsExcluded (const IdentHash& ident) const { return m_ExcludedPeers.count (ident); };
+			bool IsDirect () const { return m_IsDirect; };
+			bool IsActive () const { return m_IsActive; };
+			bool IsExcluded (const IdentHash& ident) const;
 			uint64_t GetCreationTime () const { return m_CreationTime; };
+			uint64_t GetLastRequestTime () const { return m_LastRequestTime; };
 			std::shared_ptr<I2NPMessage> CreateRequestMessage (std::shared_ptr<const RouterInfo>, std::shared_ptr<const i2p::tunnel::InboundTunnel> replyTunnel);
 			std::shared_ptr<I2NPMessage> CreateRequestMessage (const IdentHash& floodfill);
 
-			void SetRequestComplete (const RequestComplete& requestComplete) { m_RequestComplete = requestComplete; };
-			bool IsRequestComplete () const { return m_RequestComplete != nullptr; };
+			void AddRequestComplete (const RequestComplete& requestComplete) { m_RequestComplete.push_back (requestComplete); };
+			void ResetRequestComplete () { m_RequestComplete.clear (); };
 			void Success (std::shared_ptr<RouterInfo> r);
 			void Fail ();
 
+		private:
+
+			void InvokeRequestComplete (std::shared_ptr<RouterInfo> r);
+			
 		private:
 
 			IdentHash m_Destination;
-			bool m_IsExploratory;
-			std::set<IdentHash> m_ExcludedPeers;
-			uint64_t m_CreationTime;
-			RequestComplete m_RequestComplete;
+			bool m_IsExploratory, m_IsDirect, m_IsActive;
+			std::unordered_set<IdentHash> m_ExcludedPeers;
+			uint64_t m_CreationTime, m_LastRequestTime; // in seconds
+			std::list<RequestComplete> m_RequestComplete;
+			int m_NumAttempts;
 	};
 
-	class NetDbRequests
+	class NetDbRequests: public std::enable_shared_from_this<NetDbRequests>,
+		 private i2p::util::RunnableServiceWithWork
 	{
 		public:
 
+			NetDbRequests ();
+			~NetDbRequests ();
+			
 			void Start ();
 			void Stop ();
 
-			std::shared_ptr<RequestedDestination> CreateRequest (const IdentHash& destination, bool isExploratory, RequestedDestination::RequestComplete requestComplete = nullptr);
 			void RequestComplete (const IdentHash& ident, std::shared_ptr<RouterInfo> r);
+			void PostDatabaseSearchReplyMsg (std::shared_ptr<const I2NPMessage> msg);
+			void PostRequestDestination (const IdentHash& destination, const RequestedDestination::RequestComplete& requestComplete, bool direct);
+			
+		private:	
+
+			std::shared_ptr<RequestedDestination> CreateRequest (const IdentHash& destination, bool isExploratory, 
+				bool direct = false, RequestedDestination::RequestComplete requestComplete = nullptr);
 			std::shared_ptr<RequestedDestination> FindRequest (const IdentHash& ident) const;
+			bool SendNextRequest (std::shared_ptr<RequestedDestination> dest);
+			
+			void HandleDatabaseSearchReplyMsg (std::shared_ptr<const I2NPMessage> msg);
+			void RequestRouter (const IdentHash& router);
+			void RequestDestination (const IdentHash& destination, const RequestedDestination::RequestComplete& requestComplete, bool direct);
+			void Explore (int numDestinations);
 			void ManageRequests ();
-
+			// timer
+			void ScheduleManageRequests ();
+			void HandleManageRequestsTimer (const boost::system::error_code& ecode);
+			void ScheduleExploratory (uint64_t interval);
+			void HandleExploratoryTimer (const boost::system::error_code& ecode);
+			void ScheduleCleanup ();
+			void HandleCleanupTimer (const boost::system::error_code& ecode);
+			void ScheduleDiscoveredRoutersRequest ();
+			void HandleDiscoveredRoutersTimer (const boost::system::error_code& ecode);
+			
 		private:
 
-			mutable std::mutex m_RequestedDestinationsMutex;
-			std::map<IdentHash, std::shared_ptr<RequestedDestination> > m_RequestedDestinations;
+			std::unordered_map<IdentHash, std::shared_ptr<RequestedDestination> > m_RequestedDestinations;
+			std::list<IdentHash> m_DiscoveredRouterHashes;
+			i2p::util::MemoryPoolMt<RequestedDestination> m_RequestedDestinationsPool;
+			boost::asio::deadline_timer m_ManageRequestsTimer, m_ExploratoryTimer,
+				m_CleanupTimer, m_DiscoveredRoutersTimer;
 	};
 }
 }

libi2pd/Profiling.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -16,6 +16,7 @@
 #include "FS.h"
 #include "Log.h"
 #include "Timestamp.h"
+#include "NetDb.hpp"
 #include "Profiling.h"
 
 namespace i2p
@@ -165,12 +166,12 @@ namespace data
 		}
 	}
 
-	void RouterProfile::Unreachable ()
+	void RouterProfile::Unreachable (bool unreachable)
 	{
-		m_LastUnreachableTime = i2p::util::GetSecondsSinceEpoch ();
+		m_LastUnreachableTime = unreachable ? i2p::util::GetSecondsSinceEpoch () : 0;
 		UpdateTime ();
 	}
-
+		
 	void RouterProfile::Connected ()
 	{
 		m_HasConnected = true;
@@ -237,20 +238,35 @@ namespace data
 			if (it != g_Profiles.end ())
 				return it->second;
 		}
-		auto profile = std::make_shared<RouterProfile> ();
+		auto profile = netdb.NewRouterProfile ();
 		profile->Load (identHash); // if possible
 		std::unique_lock<std::mutex> l(g_ProfilesMutex);
 		g_Profiles.emplace (identHash, profile);
 		return profile;
 	}
 
+	bool IsRouterBanned (const IdentHash& identHash)
+	{
+		std::unique_lock<std::mutex> l(g_ProfilesMutex);
+		auto it = g_Profiles.find (identHash);
+		if (it != g_Profiles.end ())
+			return it->second->IsUnreachable ();
+		return false;
+	}	
+		
 	void InitProfilesStorage ()
 	{
 		g_ProfilesStorage.SetPlace(i2p::fs::GetDataDir());
 		g_ProfilesStorage.Init(i2p::data::GetBase64SubstitutionTable(), 64);
 	}
 
-	void PersistProfiles ()
+	static void SaveProfilesToDisk (std::list<std::pair<i2p::data::IdentHash, std::shared_ptr<RouterProfile> > >&& profiles)
+	{
+		for (auto& it: profiles)
+			if (it.second) it.second->Save (it.first);
+	}	
+		
+	std::future<void> PersistProfiles ()
 	{
 		auto ts = GetTime ();
 		std::list<std::pair<i2p::data::IdentHash, std::shared_ptr<RouterProfile> > > tmp;
@@ -268,8 +284,9 @@ namespace data
 					it++;
 			}
 		}
-		for (auto& it: tmp)
-			if (it.second) it.second->Save (it.first);
+		if (!tmp.empty ())
+			return std::async (std::launch::async, SaveProfilesToDisk, std::move (tmp));
+		return std::future<void>();
 	}
 
 	void SaveProfiles ()
@@ -277,8 +294,7 @@ namespace data
 		std::unordered_map<i2p::data::IdentHash, std::shared_ptr<RouterProfile> > tmp;
 		{
 			std::unique_lock<std::mutex> l(g_ProfilesMutex);
-			tmp = g_Profiles;
-			g_Profiles.clear ();
+			std::swap (tmp, g_Profiles);
 		}
 		auto ts = GetTime ();
 		for (auto& it: tmp)
@@ -286,7 +302,29 @@ namespace data
 				it.second->Save (it.first);
 	}
 
-	void DeleteObsoleteProfiles ()
+	static void DeleteFilesFromDisk ()
+	{
+		std::vector<std::string> files;
+		g_ProfilesStorage.Traverse(files);
+		
+		struct stat st;
+		std::time_t now = std::time(nullptr);
+		for (const auto& path: files) 
+		{
+			if (stat(path.c_str(), &st) != 0) 
+			{	
+				LogPrint(eLogWarning, "Profiling: Can't stat(): ", path);
+				continue;
+			}
+			if (now - st.st_mtime >= PEER_PROFILE_EXPIRATION_TIMEOUT*3600) 
+			{
+				LogPrint(eLogDebug, "Profiling: Removing expired peer profile: ", path);
+				i2p::fs::Remove(path);
+			}
+		}
+	}	
+		
+	std::future<void> DeleteObsoleteProfiles ()
 	{
 		{
 			auto ts = GetTime ();
@@ -300,21 +338,7 @@ namespace data
 			}
 		}
 
-		struct stat st;
-		std::time_t now = std::time(nullptr);
-
-		std::vector<std::string> files;
-		g_ProfilesStorage.Traverse(files);
-		for (const auto& path: files) {
-			if (stat(path.c_str(), &st) != 0) {
-				LogPrint(eLogWarning, "Profiling: Can't stat(): ", path);
-				continue;
-			}
-			if (now - st.st_mtime >= PEER_PROFILE_EXPIRATION_TIMEOUT*3600) {
-				LogPrint(eLogDebug, "Profiling: Removing expired peer profile: ", path);
-				i2p::fs::Remove(path);
-			}
-		}
+		return std::async (std::launch::async, DeleteFilesFromDisk);
 	}
 }
 }

libi2pd/Profiling.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -10,6 +10,7 @@
 #define PROFILING_H__
 
 #include <memory>
+#include <future>
 #include <boost/date_time/posix_time/posix_time.hpp>
 #include "Identity.h"
 
@@ -31,11 +32,13 @@ namespace data
 	const char PEER_PROFILE_USAGE_CONNECTED[] = "connected";
 	
 	const int PEER_PROFILE_EXPIRATION_TIMEOUT = 36; // in hours (1.5 days)
-	const int PEER_PROFILE_AUTOCLEAN_TIMEOUT = 6 * 3600; // in seconds (6 hours)
-	const int PEER_PROFILE_AUTOCLEAN_VARIANCE = 3600; // in seconds (1 hour)
+	const int PEER_PROFILE_AUTOCLEAN_TIMEOUT = 1500; // in seconds (25 minutes)
+	const int PEER_PROFILE_AUTOCLEAN_VARIANCE = 900; // in seconds (15 minutes)
+	const int PEER_PROFILE_OBSOLETE_PROFILES_CLEAN_TIMEOUT = 5400; // in seconds (1.5 hours)
+	const int PEER_PROFILE_OBSOLETE_PROFILES_CLEAN_VARIANCE = 2400; // in seconds (40 minutes)
 	const int PEER_PROFILE_DECLINED_RECENTLY_INTERVAL = 150; // in seconds (2.5 minutes)
 	const int PEER_PROFILE_PERSIST_INTERVAL = 3300; // in seconds (55 minutes)
-	const int PEER_PROFILE_UNREACHABLE_INTERVAL = 2*3600; // on seconds (2 hours)
+	const int PEER_PROFILE_UNREACHABLE_INTERVAL = 480; // in seconds (8 minutes)
 	const int PEER_PROFILE_USEFUL_THRESHOLD = 3;
 
 	class RouterProfile
@@ -43,7 +46,6 @@ namespace data
 		public:
 
 			RouterProfile ();
-			RouterProfile& operator= (const RouterProfile& ) = default;
 
 			void Save (const IdentHash& identHash);
 			void Load (const IdentHash& identHash);
@@ -55,7 +57,7 @@ namespace data
 			void TunnelBuildResponse (uint8_t ret);
 			void TunnelNonReplied ();
 
-			void Unreachable ();
+			void Unreachable (bool unreachable);
 			void Connected ();
 
 			boost::posix_time::ptime GetLastUpdateTime () const { return m_LastUpdateTime; };
@@ -88,10 +90,11 @@ namespace data
 	};
 
 	std::shared_ptr<RouterProfile> GetRouterProfile (const IdentHash& identHash);
+	bool IsRouterBanned (const IdentHash& identHash); // check only existing profiles
 	void InitProfilesStorage ();
-	void DeleteObsoleteProfiles ();
+	std::future<void> DeleteObsoleteProfiles ();
 	void SaveProfiles ();
-	void PersistProfiles ();
+	std::future<void> PersistProfiles ();
 }
 }
 

libi2pd/Reseed.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -26,6 +26,7 @@
 #include "HTTP.h"
 #include "util.h"
 #include "Config.h"
+#include "Socks5.h"
 
 namespace i2p
 {
@@ -615,62 +616,21 @@ namespace data
 					{
 						// assume socks if not http, is checked before this for other types
 						// TODO: support username/password auth etc
-						uint8_t hs_writebuf[3] = {0x05, 0x01, 0x00};
-						uint8_t hs_readbuf[2];
-						boost::asio::write(sock, boost::asio::buffer(hs_writebuf, 3), boost::asio::transfer_all(), ecode);
-						if(ecode)
+						bool success = false;
+						i2p::transport::Socks5Handshake (sock, std::make_pair(url.host, url.port),
+							[&success](const boost::system::error_code& ec) 
+						    { 
+								if (!ec)
+									success = true;
+								else
+									LogPrint (eLogError, "Reseed: SOCKS handshake failed: ", ec.message());
+							});	
+						service.run (); // execute all async operations
+						if (!success)
 						{
 							sock.close();
-							LogPrint(eLogError, "Reseed: SOCKS handshake write failed: ", ecode.message());
 							return "";
-						}
-						boost::asio::read(sock, boost::asio::buffer(hs_readbuf, 2), ecode);
-						if(ecode)
-						{
-							sock.close();
-							LogPrint(eLogError, "Reseed: SOCKS handshake read failed: ", ecode.message());
-							return "";
-						}
-						size_t sz = 0;
-						uint8_t buf[256];
-
-						buf[0] = 0x05;
-						buf[1] = 0x01;
-						buf[2] = 0x00;
-						buf[3] = 0x03;
-						sz += 4;
-						size_t hostsz = url.host.size();
-						if(1 + 2 + hostsz + sz > sizeof(buf))
-						{
-							sock.close();
-							LogPrint(eLogError, "Reseed: SOCKS handshake failed, hostname too big: ", url.host);
-							return "";
-						}
-						buf[4] = (uint8_t) hostsz;
-						memcpy(buf+5, url.host.c_str(), hostsz);
-						sz += hostsz + 1;
-						htobe16buf(buf+sz, url.port);
-						sz += 2;
-						boost::asio::write(sock, boost::asio::buffer(buf, sz), boost::asio::transfer_all(), ecode);
-						if(ecode)
-						{
-							sock.close();
-							LogPrint(eLogError, "Reseed: SOCKS handshake failed writing: ", ecode.message());
-							return "";
-						}
-						boost::asio::read(sock, boost::asio::buffer(buf, 10), ecode);
-						if(ecode)
-						{
-							sock.close();
-							LogPrint(eLogError, "Reseed: SOCKS handshake failed reading: ", ecode.message());
-							return "";
-						}
-						if(buf[1] != 0x00)
-						{
-							sock.close();
-							LogPrint(eLogError, "Reseed: SOCKS handshake bad reply code: ", std::to_string(buf[1]));
-							return "";
-						}
+						}	
 					}
 				}
 			}
@@ -687,18 +647,16 @@ namespace data
 				while (it != end)
 				{
 					boost::asio::ip::tcp::endpoint ep = *it;
-					if (
-						(
-							!i2p::util::net::IsInReservedRange(ep.address ()) && (
-								(ep.address ().is_v4 () && i2p::context.SupportsV4 ()) ||
-								(ep.address ().is_v6 () && i2p::context.SupportsV6 ())
-							)
-						) ||
-						(
-							i2p::util::net::IsYggdrasilAddress (ep.address ()) &&
-							i2p::context.SupportsMesh ()
-						)
-					)
+					bool supported = false;
+					if (!ep.address ().is_unspecified ())
+					{
+						if (ep.address ().is_v4 ())
+							supported = i2p::context.SupportsV4 ();
+						else if (ep.address ().is_v6 ())
+							supported = i2p::util::net::IsYggdrasilAddress (ep.address ()) ? 
+								i2p::context.SupportsMesh () : i2p::context.SupportsV6 ();
+					}	
+					if (supported)
 					{
 						s.lowest_layer().connect (ep, ecode);
 						if (!ecode)

libi2pd/RouterContext.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -31,7 +31,8 @@ namespace i2p
 	RouterContext::RouterContext ():
 		m_LastUpdateTime (0), m_AcceptsTunnels (true), m_IsFloodfill (false),
 		m_ShareRatio (100), m_Status (eRouterStatusUnknown), m_StatusV6 (eRouterStatusUnknown),
-		m_Error (eRouterErrorNone), m_ErrorV6 (eRouterErrorNone), m_NetID (I2PD_NET_ID),
+		m_Error (eRouterErrorNone), m_ErrorV6 (eRouterErrorNone),
+		m_Testing (false), m_TestingV6 (false), m_NetID (I2PD_NET_ID),
 		m_PublishReplyToken (0), m_IsHiddenMode (false)
 	{
 	}
@@ -39,7 +40,7 @@ namespace i2p
 	void RouterContext::Init ()
 	{
 		srand (i2p::util::GetMillisecondsSinceEpoch () % 1000);
-		m_StartupTime = std::chrono::steady_clock::now();
+		m_StartupTime = i2p::util::GetMonotonicSeconds ();
 
 		if (!Load ())
 			CreateNewRouter ();
@@ -56,13 +57,12 @@ namespace i2p
 		{	
 			m_Service.reset (new RouterService);
 			m_Service->Start ();
-			if (!m_IsHiddenMode)
-			{
-				m_PublishTimer.reset (new boost::asio::deadline_timer (m_Service->GetService ()));
-				ScheduleInitialPublish ();
-				m_CongestionUpdateTimer.reset (new boost::asio::deadline_timer (m_Service->GetService ()));
-				ScheduleCongestionUpdate ();
-			}	
+			m_PublishTimer.reset (new boost::asio::deadline_timer (m_Service->GetService ()));
+			ScheduleInitialPublish ();
+			m_CongestionUpdateTimer.reset (new boost::asio::deadline_timer (m_Service->GetService ()));
+			ScheduleCongestionUpdate ();
+			m_CleanupTimer.reset (new boost::asio::deadline_timer (m_Service->GetService ()));
+			ScheduleCleanupTimer ();
 		}	
 	}
 	
@@ -77,7 +77,13 @@ namespace i2p
 			m_Service->Stop ();
 		}	
 	}	
-	
+
+	std::shared_ptr<i2p::data::RouterInfo::Buffer> RouterContext::CopyRouterInfoBuffer () const
+	{
+		std::lock_guard<std::mutex> l(m_RouterInfoMutex);
+		return m_RouterInfo.CopyBuffer ();
+	}	
+		
 	void RouterContext::CreateNewRouter ()
 	{
 		m_Keys = i2p::data::PrivateKeys::CreateRandomKeys (i2p::data::SIGNING_KEY_TYPE_EDDSA_SHA512_ED25519,
@@ -246,7 +252,10 @@ namespace i2p
 
 	void RouterContext::UpdateRouterInfo ()
 	{
-		m_RouterInfo.CreateBuffer (m_Keys);
+		{
+			std::lock_guard<std::mutex> l(m_RouterInfoMutex);
+			m_RouterInfo.CreateBuffer (m_Keys);
+		}
 		m_RouterInfo.SaveToFile (i2p::fs::DataDirPath (ROUTER_INFO));
 		m_LastUpdateTime = i2p::util::GetSecondsSinceEpoch ();
 	}
@@ -277,10 +286,33 @@ namespace i2p
 		fk.write ((char *)m_SSU2Keys.get (), sizeof (SSU2PrivateKeys));
 	}
 
+	void RouterContext::SetTesting (bool testing)
+	{
+		if (testing != m_Testing)
+		{
+			m_Testing = testing;
+			if (m_Testing)
+				m_Error = eRouterErrorNone;
+		}
+	}
+
+	void RouterContext::SetTestingV6 (bool testing)
+	{
+		if (testing != m_TestingV6)
+		{
+			m_TestingV6 = testing;
+			if (m_TestingV6)
+				m_ErrorV6 = eRouterErrorNone;
+		}
+	}
+
 	void RouterContext::SetStatus (RouterStatus status)
 	{
+		SetTesting (false);
 		if (status != m_Status)
 		{
+			LogPrint(eLogInfo, "Router: network status v4 changed ",
+				ROUTER_STATUS_NAMES[m_Status], " -> ", ROUTER_STATUS_NAMES[status]);
 			m_Status = status;
 			switch (m_Status)
 			{
@@ -290,9 +322,6 @@ namespace i2p
 				case eRouterStatusFirewalled:
 					SetUnreachable (true, false); // ipv4
 				break;
-				case eRouterStatusTesting:
-					m_Error = eRouterErrorNone;
-				break;
 				default:
 					;
 			}
@@ -301,8 +330,11 @@ namespace i2p
 
 	void RouterContext::SetStatusV6 (RouterStatus status)
 	{
+		SetTestingV6 (false);
 		if (status != m_StatusV6)
 		{
+			LogPrint(eLogInfo, "Router: network status v6 changed ",
+				ROUTER_STATUS_NAMES[m_StatusV6], " -> ", ROUTER_STATUS_NAMES[status]);
 			m_StatusV6 = status;
 			switch (m_StatusV6)
 			{
@@ -312,9 +344,6 @@ namespace i2p
 				case eRouterStatusFirewalled:
 					SetUnreachable (false, true); // ipv6
 				break;
-				case eRouterStatusTesting:
-					m_ErrorV6 = eRouterErrorNone;
-				break;
 				default:
 					;
 			}
@@ -537,10 +566,10 @@ namespace i2p
 	{
 		m_IsFloodfill = floodfill;
 		if (floodfill)
-			m_RouterInfo.UpdateCaps (m_RouterInfo.GetCaps () | i2p::data::RouterInfo::eFloodfill);
+			m_RouterInfo.UpdateFloodfillProperty (true);
 		else
 		{
-			m_RouterInfo.UpdateCaps (m_RouterInfo.GetCaps () & ~i2p::data::RouterInfo::eFloodfill);
+			m_RouterInfo.UpdateFloodfillProperty (false);
 			// we don't publish number of routers and leaseset for non-floodfill
 			m_RouterInfo.DeleteProperty (i2p::data::ROUTER_INFO_PROPERTY_LEASESETS);
 			m_RouterInfo.DeleteProperty (i2p::data::ROUTER_INFO_PROPERTY_ROUTERS);
@@ -577,15 +606,15 @@ namespace i2p
 		/* detect parameters */
 		switch (L)
 		{
-			case i2p::data::CAPS_FLAG_LOW_BANDWIDTH1   : limit =   12; type = low;   break;
-			case i2p::data::CAPS_FLAG_LOW_BANDWIDTH2   : limit =   48; type = low;   break;
-			case i2p::data::CAPS_FLAG_HIGH_BANDWIDTH1  : limit =   64; type = high;  break;
-			case i2p::data::CAPS_FLAG_HIGH_BANDWIDTH2  : limit =  128; type = high;  break;
-			case i2p::data::CAPS_FLAG_HIGH_BANDWIDTH3  : limit =  256; type = high;  break;
-			case i2p::data::CAPS_FLAG_EXTRA_BANDWIDTH1 : limit = 2048; type = extra; break;
+			case i2p::data::CAPS_FLAG_LOW_BANDWIDTH1   : limit = 12; type = low;   break;
+			case i2p::data::CAPS_FLAG_LOW_BANDWIDTH2   : limit = i2p::data::LOW_BANDWIDTH_LIMIT; type = low;   break; // 48
+			case i2p::data::CAPS_FLAG_LOW_BANDWIDTH3  : limit = 64; type = low;  break;
+			case i2p::data::CAPS_FLAG_HIGH_BANDWIDTH1  : limit = 128; type = high;  break;
+			case i2p::data::CAPS_FLAG_HIGH_BANDWIDTH2  : limit = i2p::data::HIGH_BANDWIDTH_LIMIT; type = high;  break; // 256
+			case i2p::data::CAPS_FLAG_EXTRA_BANDWIDTH1 : limit = i2p::data::EXTRA_BANDWIDTH_LIMIT; type = extra; break; // 2048
 			case i2p::data::CAPS_FLAG_EXTRA_BANDWIDTH2 : limit = 1000000; type = unlim; break; // 1Gbyte/s
 			default:
-				limit = 48; type = low;
+				limit = i2p::data::LOW_BANDWIDTH_LIMIT; type = low; // 48
 		}
 		/* update caps & flags in RI */
 		auto caps = m_RouterInfo.GetCaps ();
@@ -1114,13 +1143,14 @@ namespace i2p
 		return i2p::tunnel::tunnels.GetExploratoryPool ();
 	}
 
-	bool RouterContext::IsHighCongestion () const
+	int RouterContext::GetCongestionLevel (bool longTerm) const
 	{
-		return i2p::tunnel::tunnels.IsTooManyTransitTunnels () ||
-			i2p::transport::transports.IsBandwidthExceeded () ||
-			i2p::transport::transports.IsTransitBandwidthExceeded ();
-	}	
-		
+		return std::max (
+			i2p::tunnel::tunnels.GetCongestionLevel (),
+			i2p::transport::transports.GetCongestionLevel (longTerm)
+		);
+	}
+	
 	void RouterContext::HandleI2NPMessage (const uint8_t * buf, size_t len)
 	{
 		i2p::HandleI2NPMessage (CreateI2NPMessage (buf, GetI2NPMessageLength (buf, len)));
@@ -1128,6 +1158,13 @@ namespace i2p
 
 	bool RouterContext::HandleCloveI2NPMessage (I2NPMessageType typeID, const uint8_t * payload, size_t len, uint32_t msgID)
 	{
+		if (typeID == eI2NPTunnelTest)
+		{
+			// try tunnel test
+			auto pool = GetTunnelPool ();
+			if (pool && pool->ProcessTunnelTest (bufbe32toh (payload + TUNNEL_TEST_MSGID_OFFSET), bufbe64toh (payload + TUNNEL_TEST_TIMESTAMP_OFFSET)))
+				return true;
+		}
 		auto msg = CreateI2NPMessage (typeID, payload, len, msgID);
 		if (!msg) return false;
 		i2p::HandleI2NPMessage (msg);
@@ -1182,21 +1219,30 @@ namespace i2p
 		else	              
 			i2p::garlic::GarlicDestination::ProcessDeliveryStatusMessage (msg);
 	}
-	
-	void RouterContext::CleanupDestination ()
+
+	void RouterContext::SubmitECIESx25519Key (const uint8_t * key, uint64_t tag)
 	{
 		if (m_Service)
-			m_Service->GetService ().post ([this]()
-			{  
-				this->i2p::garlic::GarlicDestination::CleanupExpiredTags ();
-			});	
+		{
+			struct
+			{
+				uint8_t k[32];
+				uint64_t t;
+			} data;
+			memcpy (data.k, key, 32);
+			data.t = tag;
+			m_Service->GetService ().post ([this,data](void)
+				{
+					AddECIESx25519Key (data.k, data.t);
+				});
+		}	
 		else
 			LogPrint (eLogError, "Router: service is NULL");
-	}
+	}	
 
 	uint32_t RouterContext::GetUptime () const
 	{
-		return std::chrono::duration_cast<std::chrono::seconds> (std::chrono::steady_clock::now() - m_StartupTime).count ();
+		return i2p::util::GetMonotonicSeconds () - m_StartupTime;
 	}
 
 	bool RouterContext::Decrypt (const uint8_t * encrypted, uint8_t * data, i2p::data::CryptoKeyType preferredCrypto) const
@@ -1286,7 +1332,10 @@ namespace i2p
 			if (m_RouterInfo.IsReachableBy (i2p::data::RouterInfo::eAllTransports))
 				HandlePublishTimer (ecode);
 			else
+			{	
+				UpdateTimestamp (i2p::util::GetSecondsSinceEpoch ());	
 				ScheduleInitialPublish ();
+			}		
 		}	
 	}	
 	
@@ -1308,16 +1357,21 @@ namespace i2p
 	{
 		if (ecode != boost::asio::error::operation_aborted)
 		{
-			m_PublishExcluded.clear ();
-			m_PublishReplyToken = 0;
-			if (IsFloodfill ())
+			UpdateTimestamp (i2p::util::GetSecondsSinceEpoch ());
+			if (!m_IsHiddenMode)
 			{	
-				UpdateStats (); // for floodfill
-				m_PublishExcluded.insert (i2p::context.GetIdentHash ()); // don't publish to ourselves
+				m_PublishExcluded.clear ();
+				m_PublishReplyToken = 0;
+				if (IsFloodfill ())
+				{	
+					UpdateStats (); // for floodfill
+					m_PublishExcluded.insert (i2p::context.GetIdentHash ()); // don't publish to ourselves
+				}		
+				Publish ();	
+				SchedulePublishResend ();
 			}	
-			UpdateTimestamp (i2p::util::GetSecondsSinceEpoch ());
-			Publish ();	
-			SchedulePublishResend ();
+			else
+				SchedulePublish ();
 		}	
 	}	
 	
@@ -1337,10 +1391,20 @@ namespace i2p
 			uint32_t replyToken;
 			RAND_bytes ((uint8_t *)&replyToken, 4);
 			LogPrint (eLogInfo, "Router: Publishing our RouterInfo to ", i2p::data::GetIdentHashAbbreviation(floodfill->GetIdentHash ()), ". reply token=", replyToken);
-			if (floodfill->IsReachableFrom (i2p::context.GetRouterInfo ()) || // are we able to connect?
-				i2p::transport::transports.IsConnected (floodfill->GetIdentHash ())) // already connected ?
+			auto onDrop = [this]()
+				{
+					if (m_Service)
+						m_Service->GetService ().post ([this]() { HandlePublishResendTimer (boost::system::error_code ()); });
+				};
+			if (i2p::transport::transports.IsConnected (floodfill->GetIdentHash ()) || // already connected
+				(floodfill->IsReachableFrom (i2p::context.GetRouterInfo ()) && // are we able to connect
+				 !i2p::transport::transports.RoutesRestricted ())) // and routes not restricted
+			{	
 				// send directly
-				i2p::transport::transports.SendMessage (floodfill->GetIdentHash (), CreateDatabaseStoreMsg (i2p::context.GetSharedRouterInfo (), replyToken));
+				auto msg = CreateDatabaseStoreMsg (i2p::context.GetSharedRouterInfo (), replyToken);
+				msg->onDrop = onDrop;
+				i2p::transport::transports.SendMessage (floodfill->GetIdentHash (), msg);
+			}	
 			else
 			{
 				// otherwise through exploratory
@@ -1351,6 +1415,7 @@ namespace i2p
 				{		
 					// encrypt for floodfill
 					auto msg = CreateDatabaseStoreMsg (i2p::context.GetSharedRouterInfo (), replyToken, inbound);
+					msg->onDrop = onDrop;
 					outbound->SendTunnelDataMsgTo (floodfill->GetIdentHash (), 0, 
 						i2p::garlic::WrapECIESX25519MessageForRouter (msg, floodfill->GetIdentity ()->GetEncryptionPublicKey ()));
 				}	
@@ -1405,13 +1470,41 @@ namespace i2p
 		if (ecode != boost::asio::error::operation_aborted)
 		{
 			auto c = i2p::data::RouterInfo::eLowCongestion;
-			if (!AcceptsTunnels ()) 
+			if (!AcceptsTunnels () || !m_ShareRatio)
 				c = i2p::data::RouterInfo::eRejectAll;
-			else if (IsHighCongestion ()) 
-				c = i2p::data::RouterInfo::eHighCongestion;
+			else
+			{
+				int congestionLevel = GetCongestionLevel (true);
+				if (congestionLevel > CONGESTION_LEVEL_HIGH)
+					c = i2p::data::RouterInfo::eHighCongestion;
+				else if (congestionLevel > CONGESTION_LEVEL_MEDIUM)
+					c = i2p::data::RouterInfo::eMediumCongestion;
+			}
 			if (m_RouterInfo.UpdateCongestion (c))
 				UpdateRouterInfo ();
 			ScheduleCongestionUpdate ();
 		}	
 	}	
+
+	void RouterContext::ScheduleCleanupTimer ()
+	{
+		if (m_CleanupTimer)
+		{	
+			m_CleanupTimer->cancel ();
+			m_CleanupTimer->expires_from_now (boost::posix_time::minutes(ROUTER_INFO_CLEANUP_INTERVAL));
+			m_CleanupTimer->async_wait (std::bind (&RouterContext::HandleCleanupTimer,
+				this, std::placeholders::_1));
+		}	
+		else
+			LogPrint (eLogError, "Router: Cleanup timer is NULL");
+	}	
+
+	void RouterContext::HandleCleanupTimer (const boost::system::error_code& ecode)
+	{
+		if (ecode != boost::asio::error::operation_aborted)
+		{
+			CleanupExpiredTags ();
+			ScheduleCleanupTimer ();
+		}	
+	}	
 }

libi2pd/RouterContext.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -12,8 +12,7 @@
 #include <inttypes.h>
 #include <string>
 #include <memory>
-#include <chrono>
-#include <set>
+#include <unordered_set>
 #include <boost/asio.hpp>
 #include "Identity.h"
 #include "RouterInfo.h"
@@ -38,15 +37,24 @@ namespace garlic
 	const int ROUTER_INFO_CONFIRMATION_TIMEOUT = 5; // in seconds
 	const int ROUTER_INFO_MAX_PUBLISH_EXCLUDED_FLOODFILLS = 15;
 	const int ROUTER_INFO_CONGESTION_UPDATE_INTERVAL = 12*60; // in seconds
+	const int ROUTER_INFO_CLEANUP_INTERVAL = 5; // in minutes
 
 	enum RouterStatus
 	{
 		eRouterStatusOK = 0,
-		eRouterStatusTesting = 1,
-		eRouterStatusFirewalled = 2,
-		eRouterStatusUnknown = 3,
-		eRouterStatusProxy = 4,
-		eRouterStatusMesh = 5
+		eRouterStatusFirewalled = 1,
+		eRouterStatusUnknown = 2,
+		eRouterStatusProxy = 3,
+		eRouterStatusMesh = 4
+	};
+
+	const char* const ROUTER_STATUS_NAMES[] =
+	{
+		"OK", // 0
+		"Firewalled", // 1
+		"Unknown", // 2
+		"Proxy", // 3
+		"Mesh" // 4
 	};
 
 	enum RouterError
@@ -106,7 +114,8 @@ namespace garlic
 				return std::shared_ptr<i2p::garlic::GarlicDestination> (this,
 					[](i2p::garlic::GarlicDestination *) {});
 			}
-
+			std::shared_ptr<i2p::data::RouterInfo::Buffer> CopyRouterInfoBuffer () const;
+			
 			const uint8_t * GetNTCP2StaticPublicKey () const { return m_NTCP2Keys ? m_NTCP2Keys->staticPublicKey : nullptr; };
 			const uint8_t * GetNTCP2StaticPrivateKey () const { return m_NTCP2Keys ? m_NTCP2Keys->staticPrivateKey : nullptr; };
 			const uint8_t * GetNTCP2IV () const { return m_NTCP2Keys ? m_NTCP2Keys->iv : nullptr; };
@@ -121,10 +130,14 @@ namespace garlic
 			uint64_t GetLastUpdateTime () const { return m_LastUpdateTime; };
 			uint64_t GetBandwidthLimit () const { return m_BandwidthLimit; };
 			uint64_t GetTransitBandwidthLimit () const { return (m_BandwidthLimit*m_ShareRatio)/100LL; };
+			bool GetTesting () const { return m_Testing; };
+			void SetTesting (bool testing);
 			RouterStatus GetStatus () const { return m_Status; };
 			void SetStatus (RouterStatus status);
 			RouterError GetError () const { return m_Error; };
 			void SetError (RouterError error) { m_Error = error; };
+			bool GetTestingV6 () const { return m_TestingV6; };
+			void SetTestingV6 (bool testing);
 			RouterStatus GetStatusV6 () const { return m_StatusV6; };
 			void SetStatusV6 (RouterStatus status);
 			RouterError GetErrorV6 () const { return m_ErrorV6; };
@@ -133,6 +146,7 @@ namespace garlic
 			void SetNetID (int netID) { m_NetID = netID; };
 			bool DecryptTunnelBuildRecord (const uint8_t * encrypted, uint8_t * data);
 			bool DecryptTunnelShortRequestRecord (const uint8_t * encrypted, uint8_t * data);
+			void SubmitECIESx25519Key (const uint8_t * key, uint64_t tag);
 
 			void UpdatePort (int port); // called from Daemon
 			void UpdateAddress (const boost::asio::ip::address& host); // called from SSU2 or Daemon
@@ -153,7 +167,7 @@ namespace garlic
 			void SetShareRatio (int percents); // 0 - 100
 			bool AcceptsTunnels () const { return m_AcceptsTunnels; };
 			void SetAcceptsTunnels (bool acceptsTunnels) { m_AcceptsTunnels = acceptsTunnels; };
-			bool IsHighCongestion () const;
+			int GetCongestionLevel (bool longTerm) const;
 			bool SupportsV6 () const { return m_RouterInfo.IsV6 (); };
 			bool SupportsV4 () const { return m_RouterInfo.IsV4 (); };
 			bool SupportsMesh () const { return m_RouterInfo.IsMesh (); };
@@ -168,7 +182,6 @@ namespace garlic
 			void UpdateNTCP2V6Address (const boost::asio::ip::address& host); // called from Daemon. TODO: remove
 			void UpdateStats ();
 			void UpdateTimestamp (uint64_t ts); // in seconds, called from NetDb before publishing
-			void CleanupDestination (); // garlic destination
 
 			// implements LocalDestination
 			std::shared_ptr<const i2p::data::IdentityEx> GetIdentity () const { return m_Keys.GetPublic (); };
@@ -217,6 +230,8 @@ namespace garlic
 			void HandlePublishResendTimer (const boost::system::error_code& ecode);
 			void ScheduleCongestionUpdate ();
 			void HandleCongestionUpdateTimer (const boost::system::error_code& ecode);
+			void ScheduleCleanupTimer ();
+			void HandleCleanupTimer (const boost::system::error_code& ecode);
 			
 		private:
 
@@ -226,11 +241,12 @@ namespace garlic
 			std::shared_ptr<i2p::garlic::RouterIncomingRatchetSession> m_ECIESSession;
 			uint64_t m_LastUpdateTime; // in seconds
 			bool m_AcceptsTunnels, m_IsFloodfill;
-			std::chrono::time_point<std::chrono::steady_clock> m_StartupTime;
+			uint64_t m_StartupTime; // monotonic seconds
 			uint64_t m_BandwidthLimit; // allowed bandwidth
 			int m_ShareRatio;
 			RouterStatus m_Status, m_StatusV6;
 			RouterError m_Error, m_ErrorV6;
+			bool m_Testing, m_TestingV6;
 			int m_NetID;
 			std::unique_ptr<NTCP2PrivateKeys> m_NTCP2Keys;
 			std::unique_ptr<SSU2PrivateKeys> m_SSU2Keys;
@@ -239,10 +255,11 @@ namespace garlic
 			i2p::crypto::NoiseSymmetricState m_InitialNoiseState, m_CurrentNoiseState;
 			// publish
 			std::unique_ptr<RouterService> m_Service;
-			std::unique_ptr<boost::asio::deadline_timer> m_PublishTimer, m_CongestionUpdateTimer;
-			std::set<i2p::data::IdentHash> m_PublishExcluded;
+			std::unique_ptr<boost::asio::deadline_timer> m_PublishTimer, m_CongestionUpdateTimer, m_CleanupTimer;
+			std::unordered_set<i2p::data::IdentHash> m_PublishExcluded;
 			uint32_t m_PublishReplyToken;
 			bool m_IsHiddenMode; // not publish
+			mutable std::mutex m_RouterInfoMutex;
 	};
 
 	extern RouterContext context;

libi2pd/RouterInfo.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -21,6 +21,7 @@
 #include "Base.h"
 #include "Timestamp.h"
 #include "Log.h"
+#include "Transports.h"
 #include "NetDb.hpp"
 #include "RouterContext.h"
 #include "RouterInfo.h"
@@ -33,6 +34,7 @@ namespace data
 	{
 		if (len > size ()) len = size ();
 		memcpy (data (), buf, len);
+		m_BufferLen = len;
 	}
 
 	RouterInfo::RouterInfo (): m_Buffer (nullptr)
@@ -41,8 +43,8 @@ namespace data
 	}
 
 	RouterInfo::RouterInfo (const std::string& fullPath):
-		m_FamilyID (0), m_IsUpdated (false), m_IsUnreachable (false),
-		m_SupportedTransports (0),m_ReachableTransports (0),
+		m_FamilyID (0), m_IsUpdated (false), m_IsUnreachable (false), m_IsFloodfill (false),
+		m_SupportedTransports (0),m_ReachableTransports (0), m_PublishedTransports (0),
 		m_Caps (0), m_Version (0), m_Congestion (eLowCongestion)
 	{
 		m_Addresses = boost::make_shared<Addresses>(); // create empty list
@@ -51,15 +53,15 @@ namespace data
 	}
 
 	RouterInfo::RouterInfo (std::shared_ptr<Buffer>&& buf, size_t len):
-		m_FamilyID (0), m_IsUpdated (true), m_IsUnreachable (false),
-		m_SupportedTransports (0), m_ReachableTransports (0),
+		m_FamilyID (0), m_IsUpdated (true), m_IsUnreachable (false), m_IsFloodfill (false),
+		m_SupportedTransports (0), m_ReachableTransports (0), m_PublishedTransports (0),
 		m_Caps (0), m_Version (0), m_Congestion (eLowCongestion)
 	{
 		if (len <= MAX_RI_BUFFER_SIZE)
 		{
 			m_Addresses = boost::make_shared<Addresses>(); // create empty list
 			m_Buffer = buf;
-			m_BufferLen = len;
+			if (m_Buffer) m_Buffer->SetBufferLen (len);
 			ReadFromBuffer (true);
 		}
 		else
@@ -95,7 +97,8 @@ namespace data
 			m_IsUnreachable = false;
 			m_SupportedTransports = 0;
 			m_ReachableTransports = 0;
-			m_Caps = 0;
+			m_PublishedTransports = 0;	
+			m_Caps = 0; m_IsFloodfill = false;
 			// don't clean up m_Addresses, it will be replaced in ReadFromStream
 			ClearProperties ();
 			// skip identity
@@ -127,16 +130,17 @@ namespace data
 		if (s.is_open ())
 		{
 			s.seekg (0,std::ios::end);
-			m_BufferLen = s.tellg ();
-			if (m_BufferLen < 40 || m_BufferLen > MAX_RI_BUFFER_SIZE)
+			size_t bufferLen = s.tellg ();
+			if (bufferLen < 40 || bufferLen > MAX_RI_BUFFER_SIZE)
 			{
-				LogPrint(eLogError, "RouterInfo: File", fullPath, " is malformed");
+				LogPrint(eLogError, "RouterInfo: File ", fullPath, " is malformed");
 				return false;
 			}
 			s.seekg(0, std::ios::beg);
 			if (!m_Buffer)
 				m_Buffer = NewBuffer ();
-			s.read((char *)m_Buffer->data (), m_BufferLen);
+			s.read((char *)m_Buffer->data (), bufferLen);
+			m_Buffer->SetBufferLen (bufferLen);
 		}
 		else
 		{
@@ -161,11 +165,12 @@ namespace data
 			m_IsUnreachable = true;
 			return;
 		}
-		m_RouterIdentity = NewIdentity (m_Buffer->data (), m_BufferLen);
+		size_t bufferLen = m_Buffer->GetBufferLen ();
+		m_RouterIdentity = NewIdentity (m_Buffer->data (), bufferLen);
 		size_t identityLen = m_RouterIdentity->GetFullLen ();
-		if (identityLen >= m_BufferLen)
+		if (identityLen >= bufferLen)
 		{
-			LogPrint (eLogError, "RouterInfo: Identity length ", identityLen, " exceeds buffer size ", m_BufferLen);
+			LogPrint (eLogError, "RouterInfo: Identity length ", identityLen, " exceeds buffer size ", bufferLen);
 			m_IsUnreachable = true;
 			return;
 		}
@@ -179,7 +184,7 @@ namespace data
 				return;
 			}
 			// verify signature
-			int l = m_BufferLen - m_RouterIdentity->GetSignatureLen ();
+			int l = bufferLen - m_RouterIdentity->GetSignatureLen ();
 			if (l < 0 || !m_RouterIdentity->Verify ((uint8_t *)m_Buffer->data (), l, (uint8_t *)m_Buffer->data () + l))
 			{
 				LogPrint (eLogError, "RouterInfo: Signature verification failed");
@@ -189,7 +194,7 @@ namespace data
 		}
 		// parse RI
 		std::stringstream str;
-		str.write ((const char *)m_Buffer->data () + identityLen, m_BufferLen - identityLen);
+		str.write ((const char *)m_Buffer->data () + identityLen, bufferLen - identityLen);
 		ReadFromStream (str);
 		if (!str)
 		{
@@ -215,7 +220,7 @@ namespace data
 			uint8_t cost; // ignore
 			s.read ((char *)&cost, sizeof (cost));
 			s.read ((char *)&address->date, sizeof (address->date));
-			bool isHost = false, isStaticKey = false, isV2 = false;
+			bool isHost = false, isStaticKey = false, isV2 = false, isIntroKey = false;
 			char transportStyle[6];
 			ReadString (transportStyle, 6, s);
 			if (!strncmp (transportStyle, "NTCP", 4)) // NTCP or NTCP2
@@ -253,7 +258,7 @@ namespace data
 					address->host = boost::asio::ip::address::from_string (value, ecode);
 					if (!ecode && !address->host.is_unspecified ())
 					{
-						if (!i2p::util::net::IsInReservedRange (address->host) ||
+						if (!i2p::transport::transports.IsInReservedRange (address->host) ||
 						    i2p::util::net::IsYggdrasilAddress (address->host))
 							isHost = true;
 						else
@@ -292,26 +297,38 @@ namespace data
 					address->caps = ExtractAddressCaps (value);
 				else if (!strcmp (key, "s")) // ntcp2 or ssu2 static key
 				{
-					Base64ToByteStream (value, strlen (value), address->s, 32);
-					if (!(address->s[31] & 0x80)) // check if x25519 public key
-						isStaticKey = true;
+					if (Base64ToByteStream (value, strlen (value), address->s, 32) == 32 &&
+						!(address->s[31] & 0x80)) // check if x25519 public key
+							isStaticKey = true;
+					else
+						address->transportStyle = eTransportUnknown; // invalid address
 				}
 				else if (!strcmp (key, "i")) // ntcp2 iv or ssu2 intro
 				{
 					if (address->IsNTCP2 ())
 					{
-						Base64ToByteStream (value, strlen (value), address->i, 16);
-						address->published = true; // presence of "i" means "published" NTCP2
+						if (Base64ToByteStream (value, strlen (value), address->i, 16) == 16)
+							address->published = true; // presence of "i" means "published" NTCP2
+						else
+							address->transportStyle = eTransportUnknown; // invalid address
 					}
 					else if (address->IsSSU2 ())
-						Base64ToByteStream (value, strlen (value), address->i, 32);
+					{	
+						if (Base64ToByteStream (value, strlen (value), address->i, 32) == 32)
+							isIntroKey = true;
+						else
+							address->transportStyle = eTransportUnknown; // invalid address
+					}	
 				}
 				else if (!strcmp (key, "v"))
 				{
 					if (!strcmp (value, "2"))
 						isV2 = true;
 					else
+					{	
 						LogPrint (eLogWarning, "RouterInfo: Unexpected value ", value, " for v");
+						address->transportStyle = eTransportUnknown; // invalid address
+					}	
 				}
 				else if (key[0] == 'i')
 				{
@@ -374,7 +391,7 @@ namespace data
 							supportedTransports |= (i2p::util::net::IsYggdrasilAddress (address->host) ? eNTCP2V6Mesh : eNTCP2V6);
 						else
 							supportedTransports |= eNTCP2V4;
-						m_ReachableTransports |= supportedTransports;
+						m_PublishedTransports |= supportedTransports;
 					}
 					else
 					{
@@ -389,17 +406,17 @@ namespace data
 					}
 				}
 			}
-			else if (address->transportStyle == eTransportSSU2 && isV2 && isStaticKey)
+			else if (address->transportStyle == eTransportSSU2 && isV2 && isStaticKey && isIntroKey)
 			{
 				if (address->IsV4 ()) supportedTransports |= eSSU2V4;
 				if (address->IsV6 ()) supportedTransports |= eSSU2V6;
 				if (isHost && address->port)
 				{
-					if (address->host.is_v4 ()) m_ReachableTransports |= eSSU2V4;
-					if (address->host.is_v6 ()) m_ReachableTransports |= eSSU2V6;
+					if (address->host.is_v4 ()) m_PublishedTransports |= eSSU2V4;
+					if (address->host.is_v6 ()) m_PublishedTransports |= eSSU2V6;
 					address->published = true;
 				}
-				if (address->ssu && !address->ssu->introducers.empty ())
+				else if (address->ssu && !address->ssu->introducers.empty ())
 				{
 					// exclude invalid introducers
 					uint32_t ts = i2p::util::GetSecondsSinceEpoch ();
@@ -419,6 +436,7 @@ namespace data
 				m_SupportedTransports |= supportedTransports;
 			}
 		}
+		m_ReachableTransports |= m_PublishedTransports;
 		// update addresses
 #if (BOOST_VERSION >= 105300)
 		boost::atomic_store (&m_Addresses, addresses);
@@ -448,7 +466,10 @@ namespace data
 
 			// extract caps
 			if (!strcmp (key, "caps"))
+			{	
 				ExtractCaps (value);
+				m_IsFloodfill = IsDeclaredFloodfill ();
+			}	
 			// extract version
 			else if (!strcmp (key, ROUTER_INFO_PROPERTY_VERSION))
 			{
@@ -515,7 +536,6 @@ namespace data
 				break;
 				case CAPS_FLAG_HIGH_BANDWIDTH1:
 				case CAPS_FLAG_HIGH_BANDWIDTH2:
-				case CAPS_FLAG_HIGH_BANDWIDTH3:
 					m_Caps |= Caps::eHighBandwidth;
 				break;
 				case CAPS_FLAG_EXTRA_BANDWIDTH1:
@@ -579,7 +599,7 @@ namespace data
 		int numValid = 0;
 		for (auto& it: address->ssu->introducers)
 		{
-			if (it.iTag && ts < it.iExp)
+			if (it.iTag && ts < it.iExp && !it.iH.IsZero ())
 				numValid++;
 			else
 				it.iTag = 0;
@@ -608,22 +628,28 @@ namespace data
 		return m_Buffer->data ();
 	}
 
-	bool RouterInfo::SaveToFile (const std::string& fullPath)
+	bool RouterInfo::SaveToFile (const std::string& fullPath, std::shared_ptr<Buffer> buf)
 	{
-		if (m_IsUnreachable) return false; // don't save bad router
-		if (!m_Buffer)
-		{
-			LogPrint (eLogWarning, "RouterInfo: Can't save, m_Buffer == NULL");
-			return false;
-		}
+		if (!buf) return false;
 		std::ofstream f (fullPath, std::ofstream::binary | std::ofstream::out);
 		if (!f.is_open ()) 
 		{
 			LogPrint (eLogError, "RouterInfo: Can't save to ", fullPath);
 			return false;
 		}
-		f.write ((char *)m_Buffer->data (), m_BufferLen);
+		f.write ((char *)buf->data (), buf->GetBufferLen ());
 		return true;
+	}	
+		
+	bool RouterInfo::SaveToFile (const std::string& fullPath)
+	{
+		if (m_IsUnreachable) return false; // don't save bad router
+		if (!m_Buffer)
+		{
+			LogPrint (eLogWarning, "RouterInfo: Can't save, m_Buffer == NULL");
+			return false;
+		}
+		return SaveToFile (fullPath, m_Buffer);
 	}
 
 	size_t RouterInfo::ReadString (char * str, size_t len, std::istream& s) const
@@ -995,13 +1021,14 @@ namespace data
 
 	bool RouterInfo::IsPublished (bool v4) const
 	{
-		auto addr = GetAddresses ();
-		if (v4)	
-			return ((*addr)[eNTCP2V4Idx] && ((*addr)[eNTCP2V4Idx])->published) ||
-				((*addr)[eSSU2V4Idx] && ((*addr)[eSSU2V4Idx])->published);
-		else
-			return ((*addr)[eNTCP2V6Idx] && ((*addr)[eNTCP2V6Idx])->published) ||
-				((*addr)[eSSU2V6Idx] && ((*addr)[eSSU2V6Idx])->published);
+		if (m_Caps & (eUnreachable | eHidden)) return false; // if router sets U or H we assume that all addresses are not published
+		return m_PublishedTransports & (v4 ? (eNTCP2V4 | eSSU2V4) : (eNTCP2V6 | eSSU2V6));
+	}	
+
+	bool RouterInfo::IsNAT2NATOnly (const RouterInfo& other) const
+	{
+		return !(m_PublishedTransports & other.m_SupportedTransports) &&
+			!(other.m_PublishedTransports & m_SupportedTransports); 	
 	}	
 		
 	bool RouterInfo::IsSSU2PeerTesting (bool v4) const
@@ -1090,9 +1117,15 @@ namespace data
 			m_Buffer = NewBuffer ();
 		if (len > m_Buffer->size ()) len = m_Buffer->size ();
 		memcpy (m_Buffer->data (), buf, len);
-		m_BufferLen = len;
+		m_Buffer->SetBufferLen (len);
 	}
 
+	std::shared_ptr<RouterInfo::Buffer> RouterInfo::CopyBuffer () const
+	{
+		if (!m_Buffer) return nullptr;
+		return netdb.NewRouterInfoBuffer (*m_Buffer);
+	}	
+		
 	std::shared_ptr<RouterInfo::Buffer> RouterInfo::NewBuffer () const
 	{
 		return netdb.NewRouterInfoBuffer ();
@@ -1176,7 +1209,7 @@ namespace data
 				CAPS_FLAG_EXTRA_BANDWIDTH2 : // 'X'
 				CAPS_FLAG_EXTRA_BANDWIDTH1; // 'P'
 			else
-				caps += CAPS_FLAG_HIGH_BANDWIDTH3; // 'O'
+				caps += CAPS_FLAG_HIGH_BANDWIDTH2; // 'O'
 			caps += CAPS_FLAG_FLOODFILL; // floodfill
 		}
 		else
@@ -1184,7 +1217,7 @@ namespace data
 			if (c & eExtraBandwidth)
 				caps += (c & eHighBandwidth) ? CAPS_FLAG_EXTRA_BANDWIDTH2 /* 'X' */ : CAPS_FLAG_EXTRA_BANDWIDTH1; /*'P' */
 			else
-				caps += (c & eHighBandwidth) ? CAPS_FLAG_HIGH_BANDWIDTH3 /* 'O' */: CAPS_FLAG_LOW_BANDWIDTH2 /* 'L' */; // bandwidth
+				caps += (c & eHighBandwidth) ? CAPS_FLAG_HIGH_BANDWIDTH2 /* 'O' */: CAPS_FLAG_LOW_BANDWIDTH2 /* 'L' */; // bandwidth
 		}
 		if (c & eHidden) caps += CAPS_FLAG_HIDDEN; // hidden
 		if (c & eReachable) caps += CAPS_FLAG_REACHABLE; // reachable
@@ -1320,6 +1353,7 @@ namespace data
 					int i = 0;
 					for (const auto& introducer: address.ssu->introducers)
 					{
+						if (!introducer.iTag) continue;
 						if (introducer.iExp) // expiration is specified
 						{
 							WriteString ("iexp" + boost::lexical_cast<std::string>(i), properties);
@@ -1332,6 +1366,7 @@ namespace data
 					i = 0;
 					for (const auto& introducer: address.ssu->introducers)
 					{
+						if (!introducer.iTag) continue;
 						WriteString ("ih" + boost::lexical_cast<std::string>(i), properties);
 						properties << '=';
 						char value[64];
@@ -1344,6 +1379,7 @@ namespace data
 					i = 0;
 					for (const auto& introducer: address.ssu->introducers)
 					{
+						if (!introducer.iTag) continue;
 						WriteString ("itag" + boost::lexical_cast<std::string>(i), properties);
 						properties << '=';
 						WriteString (boost::lexical_cast<std::string>(introducer.iTag), properties);
@@ -1421,6 +1457,20 @@ namespace data
 		return "";
 	}
 
+	void LocalRouterInfo::UpdateFloodfillProperty (bool floodfill)
+	{
+		if (floodfill)
+		{	
+			UpdateCaps (GetCaps () | i2p::data::RouterInfo::eFloodfill);
+			SetFloodfill ();
+		}	
+		else
+		{	
+			UpdateCaps (GetCaps () & ~i2p::data::RouterInfo::eFloodfill);
+			ResetFloodfill ();
+		}	
+	}	
+		
 	void LocalRouterInfo::WriteString (const std::string& str, std::ostream& s) const
 	{
 		uint8_t len = str.size ();

libi2pd/RouterInfo.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2023, The PurpleI2P Project
+* Copyright (c) 2013-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -39,11 +39,15 @@ namespace data
 	/* bandwidth flags */
 	const char CAPS_FLAG_LOW_BANDWIDTH1   = 'K'; /*   < 12 KBps */
 	const char CAPS_FLAG_LOW_BANDWIDTH2   = 'L'; /*  12-48 KBps */
-	const char CAPS_FLAG_HIGH_BANDWIDTH1  = 'M'; /*  48-64 KBps */
-	const char CAPS_FLAG_HIGH_BANDWIDTH2  = 'N'; /*  64-128 KBps */
-	const char CAPS_FLAG_HIGH_BANDWIDTH3  = 'O'; /* 128-256 KBps */
-	const char CAPS_FLAG_EXTRA_BANDWIDTH1 = 'P'; /* 256-2000 KBps */
-	const char CAPS_FLAG_EXTRA_BANDWIDTH2 = 'X'; /*   > 2000 KBps */
+	const char CAPS_FLAG_LOW_BANDWIDTH3  = 'M'; /*  48-64 KBps */
+	const char CAPS_FLAG_HIGH_BANDWIDTH1  = 'N'; /*  64-128 KBps */
+	const char CAPS_FLAG_HIGH_BANDWIDTH2  = 'O'; /* 128-256 KBps */
+	const char CAPS_FLAG_EXTRA_BANDWIDTH1 = 'P'; /* 256-2048 KBps */
+	const char CAPS_FLAG_EXTRA_BANDWIDTH2 = 'X'; /*   > 2048 KBps */
+	// bandwidth limits in kBps
+	const uint32_t LOW_BANDWIDTH_LIMIT = 48;
+	const uint32_t HIGH_BANDWIDTH_LIMIT = 256;
+	const uint32_t EXTRA_BANDWIDTH_LIMIT = 2048;	
 	// congesion flags
 	const char CAPS_FLAG_MEDIUM_CONGESTION = 'D';
 	const char CAPS_FLAG_HIGH_CONGESTION = 'E';
@@ -125,7 +129,7 @@ namespace data
 
 			struct Introducer
 			{
-				Introducer (): iTag (0), iExp (0) {};
+				Introducer (): iTag (0), iExp (0) { iH.Fill(0); };
 				IdentHash iH;
 				uint32_t iTag;
 				uint32_t iExp;
@@ -184,6 +188,14 @@ namespace data
 
 					Buffer () = default;
 					Buffer (const uint8_t * buf, size_t len);
+					Buffer (const Buffer& other): Buffer (other.data (), other.m_BufferLen) {};
+
+					size_t GetBufferLen () const { return m_BufferLen; };
+					void SetBufferLen (size_t len) { m_BufferLen = len; };
+					
+				private:
+
+					size_t m_BufferLen = 0;
 			};
 
 			typedef std::array<std::shared_ptr<Address>, eNumTransports> Addresses;
@@ -223,8 +235,9 @@ namespace data
 			void SetUnreachableAddressesTransportCaps (uint8_t transports); // bitmask of AddressCaps
 			void UpdateSupportedTransports ();
 			void UpdateIntroducers (uint64_t ts); // ts in seconds
-			bool IsFloodfill () const { return m_Caps & Caps::eFloodfill; };
-			void ResetFlooldFill () { m_Caps &= ~Caps::eFloodfill; };
+			bool IsFloodfill () const { return m_IsFloodfill; };
+			void SetFloodfill () { m_IsFloodfill = true; };
+			void ResetFloodfill () { m_IsFloodfill = false; };
 			bool IsECIES () const { return m_RouterIdentity->GetCryptoKeyType () == i2p::data::CRYPTO_KEY_TYPE_ECIES_X25519_AEAD; };
 			bool IsNTCP2 (bool v4only = true) const;
 			bool IsNTCP2V6 () const { return m_SupportedTransports & eNTCP2V6; };
@@ -243,12 +256,15 @@ namespace data
 			bool IsReachableFrom (const RouterInfo& other) const { return m_ReachableTransports & other.m_SupportedTransports; };
 			bool IsReachableBy (CompatibleTransports transports) const { return m_ReachableTransports & transports; };
 			CompatibleTransports GetCompatibleTransports (bool incoming) const { return incoming ? m_ReachableTransports : m_SupportedTransports; };
+			CompatibleTransports GetPublishedTransports () const { return m_PublishedTransports; };	
 			bool HasValidAddresses () const { return m_SupportedTransports; };
 			bool IsHidden () const { return m_Caps & eHidden; };
 			bool IsHighBandwidth () const { return m_Caps & RouterInfo::eHighBandwidth; };
 			bool IsExtraBandwidth () const { return m_Caps & RouterInfo::eExtraBandwidth; };
 			bool IsEligibleFloodfill () const;
+			bool IsDeclaredFloodfill () const { return m_Caps & RouterInfo::eFloodfill; };
 			bool IsPublished (bool v4) const;
+			bool IsNAT2NATOnly (const RouterInfo& other) const; // only NAT-to-NAT connection is possible
 			bool IsSSU2PeerTesting (bool v4) const;
 			bool IsSSU2Introducer (bool v4) const;
 			bool IsHighCongestion (bool highBandwidth) const;
@@ -264,17 +280,21 @@ namespace data
 
 			const uint8_t * GetBuffer () const { return m_Buffer ? m_Buffer->data () : nullptr; };
 			const uint8_t * LoadBuffer (const std::string& fullPath); // load if necessary
-			size_t GetBufferLen () const { return m_BufferLen; };
+			size_t GetBufferLen () const { return m_Buffer ? m_Buffer->GetBufferLen () : 0; };
+			void DeleteBuffer () { m_Buffer = nullptr; };
+			std::shared_ptr<Buffer> GetSharedBuffer () const { return m_Buffer; };	
+			std::shared_ptr<Buffer> CopyBuffer () const;
 
 			bool IsUpdated () const { return m_IsUpdated; };
 			void SetUpdated (bool updated) { m_IsUpdated = updated; };
 			bool SaveToFile (const std::string& fullPath);
-
+			static bool SaveToFile (const std::string& fullPath, std::shared_ptr<Buffer> buf);
+		
 			std::shared_ptr<RouterProfile> GetProfile () const;
 			void DropProfile () { m_Profile = nullptr; };
+			bool HasProfile () const { return (bool)m_Profile; }; 
 
 			bool Update (const uint8_t * buf, size_t len);
-			void DeleteBuffer () { m_Buffer = nullptr; };
 			bool IsNewer (const uint8_t * buf, size_t len) const;
 
 			/** return true if we are in a router family and the signature is valid */
@@ -291,7 +311,7 @@ namespace data
 			RouterInfo ();
 			uint8_t * GetBufferPointer (size_t offset = 0 ) { return m_Buffer->data () + offset; };
 			void UpdateBuffer (const uint8_t * buf, size_t len);
-			void SetBufferLen (size_t len) { m_BufferLen = len; };
+			void SetBufferLen (size_t len) { if (m_Buffer) m_Buffer->SetBufferLen (len); };
 			void RefreshTimestamp ();
 			CompatibleTransports GetReachableTransports () const { return m_ReachableTransports; };
 			void SetReachableTransports (CompatibleTransports transports) { m_ReachableTransports = transports; };
@@ -319,11 +339,10 @@ namespace data
 			FamilyID m_FamilyID;
 			std::shared_ptr<const IdentityEx> m_RouterIdentity;
 			std::shared_ptr<Buffer> m_Buffer;
-			size_t m_BufferLen;
 			uint64_t m_Timestamp; // in milliseconds
 			boost::shared_ptr<Addresses> m_Addresses; // TODO: use std::shared_ptr and std::atomic_store for gcc >= 4.9
-			bool m_IsUpdated, m_IsUnreachable;
-			CompatibleTransports m_SupportedTransports, m_ReachableTransports;
+			bool m_IsUpdated, m_IsUnreachable, m_IsFloodfill;
+			CompatibleTransports m_SupportedTransports, m_ReachableTransports, m_PublishedTransports;
 			uint8_t m_Caps;
 			int m_Version;
 			Congestion m_Congestion;
@@ -343,7 +362,8 @@ namespace data
 			void DeleteProperty (const std::string& key);
 			std::string GetProperty (const std::string& key) const;
 			void ClearProperties () override { m_Properties.clear (); };
-
+			void UpdateFloodfillProperty (bool floodfill);
+			
 			bool AddSSU2Introducer (const Introducer& introducer, bool v4);
 			bool RemoveSSU2Introducer (const IdentHash& h, bool v4);
 

libi2pd/SSU2.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2022-2023, The PurpleI2P Project
+* Copyright (c) 2022-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -24,7 +24,8 @@ namespace transport
 		m_AddressV4 (boost::asio::ip::address_v4()), m_AddressV6 (boost::asio::ip::address_v6()),
 		m_TerminationTimer (GetService ()), m_CleanupTimer (GetService ()), m_ResendTimer (GetService ()),
 		m_IntroducersUpdateTimer (GetService ()), m_IntroducersUpdateTimerV6 (GetService ()),
-		m_IsPublished (true), m_IsSyncClockFromPeers (true), m_IsThroughProxy (false)
+		m_IsPublished (true), m_IsSyncClockFromPeers (true), m_PendingTimeOffset (0),
+		m_IsThroughProxy (false)
 	{
 	}
 
@@ -209,6 +210,42 @@ namespace transport
 		return ep.port ();
 	}
 
+	void SSU2Server::AdjustTimeOffset (int64_t offset, std::shared_ptr<const i2p::data::IdentityEx> from)
+	{
+		if (offset)
+		{	
+			if (m_PendingTimeOffset) // one more
+			{	
+				if (m_PendingTimeOffsetFrom && from && 
+					m_PendingTimeOffsetFrom->GetIdentHash ().GetLL()[0] != from->GetIdentHash ().GetLL()[0]) // from different routers
+				{	
+					if (std::abs (m_PendingTimeOffset - offset) < SSU2_CLOCK_SKEW)
+					{	
+						offset = (m_PendingTimeOffset + offset)/2; // average
+						LogPrint (eLogWarning, "SSU2: Clock adjusted by ", offset, " seconds");
+						i2p::util::AdjustTimeOffset (offset);
+					}	
+					else
+						LogPrint (eLogWarning, "SSU2: Time offsets are too different. Clock not adjusted");
+					m_PendingTimeOffset = 0;
+					m_PendingTimeOffsetFrom = nullptr;
+				}
+				else
+					LogPrint (eLogWarning, "SSU2: Time offsets from same router. Clock not adjusted");
+			}
+			else
+			{	
+				m_PendingTimeOffset = offset; // first 
+				m_PendingTimeOffsetFrom = from;
+			}	
+		}	
+		else
+		{	
+			m_PendingTimeOffset = 0; // reset
+			m_PendingTimeOffsetFrom = nullptr;
+		}	
+	}	
+		
 	boost::asio::ip::udp::socket& SSU2Server::OpenSocket (const boost::asio::ip::udp::endpoint& localEndpoint)
 	{
 		boost::asio::ip::udp::socket& socket = localEndpoint.address ().is_v6 () ? m_SocketV6 : m_SocketV4;
@@ -219,15 +256,49 @@ namespace transport
 			socket.open (localEndpoint.protocol ());
 			if (localEndpoint.address ().is_v6 ())
 				socket.set_option (boost::asio::ip::v6_only (true));
-			socket.set_option (boost::asio::socket_base::receive_buffer_size (SSU2_SOCKET_RECEIVE_BUFFER_SIZE));
-			socket.set_option (boost::asio::socket_base::send_buffer_size (SSU2_SOCKET_SEND_BUFFER_SIZE));
+
+			uint64_t bufferSize = i2p::context.GetBandwidthLimit() * 1024 / 5; // max lag = 200ms
+			bufferSize = std::max(SSU2_SOCKET_MIN_BUFFER_SIZE, std::min(bufferSize, SSU2_SOCKET_MAX_BUFFER_SIZE));
+
+			boost::asio::socket_base::receive_buffer_size receiveBufferSizeSet (bufferSize);
+			boost::asio::socket_base::send_buffer_size sendBufferSizeSet (bufferSize);
+			socket.set_option (receiveBufferSizeSet);
+			socket.set_option (sendBufferSizeSet);
+			boost::asio::socket_base::receive_buffer_size receiveBufferSizeGet;
+			boost::asio::socket_base::send_buffer_size sendBufferSizeGet;
+			socket.get_option (receiveBufferSizeGet);
+			socket.get_option (sendBufferSizeGet);
+			if (receiveBufferSizeGet.value () != receiveBufferSizeSet.value () ||
+				sendBufferSizeGet.value () != sendBufferSizeSet.value ())
+			{
+				LogPrint (eLogWarning, "SSU2: Socket receive buffer size: requested = ",
+					receiveBufferSizeSet.value (), ", got = ", receiveBufferSizeGet.value ());
+				LogPrint (eLogWarning, "SSU2: Socket send buffer size: requested = ",
+					sendBufferSizeSet.value (), ", got = ", sendBufferSizeGet.value ());
+			}
+			else
+			{
+				LogPrint (eLogInfo, "SSU2: Socket receive buffer size: ", receiveBufferSizeGet.value ());
+				LogPrint (eLogInfo, "SSU2: Socket send buffer size: ", sendBufferSizeGet.value ());
+			}
+
+			socket.non_blocking (true);
+		}
+		catch (std::exception& ex )
+		{
+			LogPrint (eLogCritical, "SSU2: Failed to open socket on ", localEndpoint.address (), ": ", ex.what());
+			ThrowFatal ("Unable to start SSU2 transport on ", localEndpoint.address (), ": ", ex.what ());
+			return socket;
+		}
+		try
+		{
 			socket.bind (localEndpoint);
 			LogPrint (eLogInfo, "SSU2: Start listening on ", localEndpoint);
 		}
 		catch (std::exception& ex )
 		{
-			LogPrint (eLogCritical, "SSU2: Failed to bind to ", localEndpoint, ": ", ex.what());
-			ThrowFatal ("Unable to start SSU2 transport on ", localEndpoint, ": ", ex.what ());
+			LogPrint (eLogWarning, "SSU2: Failed to bind to ", localEndpoint, ": ", ex.what(), ". Actual endpoint is ", socket.local_endpoint ());
+			// we can continue without binding being firewalled
 		}
 		return socket;
 	}
@@ -259,8 +330,15 @@ namespace transport
 		// but better to find out which host were sent it and mark that router as unreachable
 		{
 			i2p::transport::transports.UpdateReceivedBytes (bytes_transferred);
+			if (bytes_transferred < SSU2_MIN_RECEIVED_PACKET_SIZE)
+			{
+				// drop too short packets
+				m_PacketsPool.ReleaseMt (packet);
+				Receive (socket);
+				return;
+			}	
 			packet->len = bytes_transferred;
-
+			
 			boost::system::error_code ec;
 			size_t moreBytes = socket.available (ec);
 			if (!ec && moreBytes)
@@ -358,7 +436,11 @@ namespace transport
 		{
 			auto ident = it->second->GetRemoteIdentity ();
 			if (ident)
-				m_SessionsByRouterHash.erase (ident->GetIdentHash ());
+			{
+				auto it1 = m_SessionsByRouterHash.find (ident->GetIdentHash ());
+				if (it1 != m_SessionsByRouterHash.end () && it->second == it1->second)
+					m_SessionsByRouterHash.erase (it1);
+			}	
 			if (m_LastSession == it->second)
 				m_LastSession = nullptr;
 			m_Sessions.erase (it);
@@ -373,10 +455,12 @@ namespace transport
 			if (ident)
 			{
 				auto ret = m_SessionsByRouterHash.emplace (ident->GetIdentHash (), session);
-				if (!ret.second)
+				if (!ret.second && ret.first->second != session)
 				{
 					// session already exists
 					LogPrint (eLogWarning, "SSU2: Session to ", ident->GetIdentHash ().ToBase64 (), " already exists");
+					// move unsent msgs to new session
+					ret.first->second->MoveSendQueue (session);
 					// terminate existing
 					GetService ().post (std::bind (&SSU2Session::RequestTermination, ret.first->second, eSSU2TerminationReasonReplacedByNewSession));
 					// update session
@@ -416,7 +500,7 @@ namespace transport
 		m_PendingOutgoingSessions.erase (ep);
 	}
 
-	std::shared_ptr<SSU2Session> SSU2Server::GetRandomSession (
+	std::shared_ptr<SSU2Session> SSU2Server::GetRandomPeerTestSession (
 		i2p::data::RouterInfo::CompatibleTransports remoteTransports, const i2p::data::IdentHash& excluded) const
 	{
 		if (m_Sessions.empty ()) return nullptr;
@@ -427,7 +511,7 @@ namespace transport
 		std::advance (it, ind);
 		while (it != m_Sessions.end ())
 		{
-			if ((it->second->GetRemoteTransports () & remoteTransports) &&
+			if ((it->second->GetRemotePeerTestTransports () & remoteTransports) &&
 			    it->second->GetRemoteIdentity ()->GetIdentHash () != excluded)
 				return it->second;
 			it++;
@@ -436,7 +520,7 @@ namespace transport
 		it = m_Sessions.begin ();
 		while (it != m_Sessions.end () && ind)
 		{
-			if ((it->second->GetRemoteTransports () & remoteTransports) &&
+			if ((it->second->GetRemotePeerTestTransports () & remoteTransports) &&
 			    it->second->GetRemoteIdentity ()->GetIdentHash () != excluded)
 				return it->second;
 			it++; ind--;
@@ -542,7 +626,7 @@ namespace transport
 				else
 					it1->second->ProcessRetry (buf, len);
 			}
-			else if (!i2p::util::net::IsInReservedRange(senderEndpoint.address ()) && senderEndpoint.port ())
+			else if (!i2p::transport::transports.IsInReservedRange(senderEndpoint.address ()) && senderEndpoint.port ())
 			{
 				// assume new incoming session
 				auto session = std::make_shared<SSU2Session> (*this);
@@ -584,7 +668,10 @@ namespace transport
 		if (!ec)
 			i2p::transport::transports.UpdateSentBytes (headerLen + payloadLen);
 		else
-			LogPrint (eLogError, "SSU2: Send exception: ", ec.message (), " to ", to);
+		{
+			LogPrint (ec == boost::asio::error::would_block ? eLogInfo : eLogError,
+				"SSU2: Send exception: ", ec.message (), " to ", to);
+		}
 	}
 
 	void SSU2Server::Send (const uint8_t * header, size_t headerLen, const uint8_t * headerX, size_t headerXLen,
@@ -618,7 +705,10 @@ namespace transport
 		if (!ec)
 			i2p::transport::transports.UpdateSentBytes (headerLen + headerXLen + payloadLen);
 		else
-			LogPrint (eLogError, "SSU2: Send exception: ", ec.message (), " to ", to);
+		{
+			LogPrint (ec == boost::asio::error::would_block ? eLogInfo : eLogError,
+				"SSU2: Send exception: ", ec.message (), " to ", to);
+		}
 	}
 
 	bool SSU2Server::CreateSession (std::shared_ptr<const i2p::data::RouterInfo> router,
@@ -642,7 +732,7 @@ namespace transport
 			bool isValidEndpoint = !address->host.is_unspecified () && address->port;
 			if (isValidEndpoint)
 			{
-				if (i2p::util::net::IsInReservedRange(address->host)) return false;
+				if (i2p::transport::transports.IsInReservedRange(address->host)) return false;
 				auto s = FindPendingOutgoingSession (boost::asio::ip::udp::endpoint (address->host, address->port));
 				if (s)
 				{
@@ -729,7 +819,7 @@ namespace transport
 				if (addr)
 				{
 					bool isValidEndpoint = !addr->host.is_unspecified () && addr->port &&
-						!i2p::util::net::IsInReservedRange(addr->host);
+						!i2p::transport::transports.IsInReservedRange(addr->host);
 					if (isValidEndpoint)
 					{
 						auto s = FindPendingOutgoingSession (boost::asio::ip::udp::endpoint (addr->host, addr->port));
@@ -772,8 +862,11 @@ namespace transport
 		auto it = m_SessionsByRouterHash.find (router->GetIdentHash ());
 		if (it != m_SessionsByRouterHash.end ())
 		{
-			auto s = it->second;
-			if (it->second->IsEstablished ())
+			auto remoteAddr = it->second->GetAddress ();
+			if (!remoteAddr || !remoteAddr->IsPeerTesting () ||
+			    (v4 && !remoteAddr->IsV4 ()) || (!v4 && !remoteAddr->IsV6 ())) return false;
+			auto s = it->second;    
+			if (s->IsEstablished ())
 				GetService ().post ([s]() { s->SendPeerTest (); });
 			else
 				s->SetOnEstablished ([s]() { s->SendPeerTest (); });
@@ -882,7 +975,8 @@ namespace transport
 
 	void SSU2Server::ScheduleResend (bool more)
 	{
-		m_ResendTimer.expires_from_now (boost::posix_time::milliseconds (more ? SSU2_RESEND_CHECK_MORE_TIMEOUT :
+		m_ResendTimer.expires_from_now (boost::posix_time::milliseconds (more ? 
+		    (SSU2_RESEND_CHECK_MORE_TIMEOUT + rand () % SSU2_RESEND_CHECK_MORE_TIMEOUT_VARIANCE):
 			(SSU2_RESEND_CHECK_TIMEOUT + rand () % SSU2_RESEND_CHECK_TIMEOUT_VARIANCE)));
 		m_ResendTimer.async_wait (std::bind (&SSU2Server::HandleResendTimer,
 			this, std::placeholders::_1));
@@ -896,7 +990,8 @@ namespace transport
 			auto ts = i2p::util::GetMillisecondsSinceEpoch ();
 			for (auto it: m_Sessions)
 			{
-				resentPacketsNum += it.second->Resend (ts);
+				if (ts >= it.second->GetLastResendTime () + SSU2_RESEND_CHECK_TIMEOUT)
+					resentPacketsNum += it.second->Resend (ts);
 				if (resentPacketsNum > SSU2_MAX_RESEND_PACKETS) break;
 			}
 			for (auto it: m_PendingOutgoingSessions)
@@ -954,7 +1049,7 @@ namespace transport
 	}
 
 	std::list<std::shared_ptr<SSU2Session> > SSU2Server::FindIntroducers (int maxNumIntroducers,
-		bool v4, const std::set<i2p::data::IdentHash>& excluded) const
+		bool v4, const std::unordered_set<i2p::data::IdentHash>& excluded) const
 	{
 		std::list<std::shared_ptr<SSU2Session> > ret;
 		for (const auto& s : m_Sessions)
@@ -983,9 +1078,9 @@ namespace transport
 	void SSU2Server::UpdateIntroducers (bool v4)
 	{
 		uint32_t ts = i2p::util::GetSecondsSinceEpoch ();
-		std::list<i2p::data::IdentHash> newList;
+		std::list<i2p::data::IdentHash> newList, impliedList;
 		auto& introducers = v4 ? m_Introducers : m_IntroducersV6;
-		std::set<i2p::data::IdentHash> excluded;
+		std::unordered_set<i2p::data::IdentHash> excluded;
 		for (const auto& it : introducers)
 		{
 			std::shared_ptr<SSU2Session> session;
@@ -995,12 +1090,19 @@ namespace transport
 				session = it1->second;
 				excluded.insert (it);
 			}
-			if (session && session->IsEstablished ())
+			if (session && session->IsEstablished () && session->GetRelayTag () && session->IsOutgoing ()) // still session with introducer?
 			{
 				if (ts < session->GetCreationTime () + SSU2_TO_INTRODUCER_SESSION_EXPIRATION)
+				{	
 					session->SendKeepAlive ();
-				if (ts < session->GetCreationTime () + SSU2_TO_INTRODUCER_SESSION_DURATION)
-					newList.push_back (it);
+					if (ts < session->GetCreationTime () + SSU2_TO_INTRODUCER_SESSION_DURATION)	
+						newList.push_back (it);
+					else	
+					{	
+						impliedList.push_back (it); // keep in introducers list, but not publish
+						session = nullptr;	
+					}		
+				}	
 				else
 					session = nullptr;
 			}
@@ -1014,20 +1116,18 @@ namespace transport
 			{
 				// bump creation time for previous introducers if no new sessions found
 				LogPrint (eLogDebug, "SSU2: No new introducers found. Trying to reuse existing");
+				impliedList.clear ();
 				for (auto& it : introducers)
 				{
 					auto it1 = m_SessionsByRouterHash.find (it);
 					if (it1 != m_SessionsByRouterHash.end ())
 					{
 						auto session = it1->second;
-						if (session->IsEstablished ())
+						if (session->IsEstablished () && session->GetRelayTag () && session->IsOutgoing ())
 						{
 							session->SetCreationTime (session->GetCreationTime () + SSU2_TO_INTRODUCER_SESSION_DURATION);
 							if (std::find (newList.begin (), newList.end (), it) == newList.end ())
-							{
-								newList.push_back (it);
 								sessions.push_back (session);
-							}
 						}
 					}
 				}
@@ -1035,10 +1135,14 @@ namespace transport
 
 			for (const auto& it : sessions)
 			{
+				uint32_t tag = it->GetRelayTag ();
+				uint32_t exp = it->GetCreationTime () + SSU2_TO_INTRODUCER_SESSION_EXPIRATION;
+				if (!tag || ts + SSU2_TO_INTRODUCER_SESSION_DURATION/2 > exp)
+					continue; // don't pick too old session for introducer	
 				i2p::data::RouterInfo::Introducer introducer;
-				introducer.iTag = it->GetRelayTag ();
+				introducer.iTag = tag;
 				introducer.iH = it->GetRemoteIdentity ()->GetIdentHash ();
-				introducer.iExp = it->GetCreationTime () + SSU2_TO_INTRODUCER_SESSION_EXPIRATION;
+				introducer.iExp = exp;
 				excluded.insert (it->GetRemoteIdentity ()->GetIdentHash ());
 				if (i2p::context.AddSSU2Introducer (introducer, v4))
 				{
@@ -1072,13 +1176,15 @@ namespace transport
 				}
 			}
 		}
+		introducers.splice (introducers.end (), impliedList);  // insert non-published, but non-expired introducers back
 	}
 
 	void SSU2Server::ScheduleIntroducersUpdateTimer ()
 	{
 		if (m_IsPublished)
 		{
-			m_IntroducersUpdateTimer.expires_from_now (boost::posix_time::seconds(SSU2_KEEP_ALIVE_INTERVAL));
+			m_IntroducersUpdateTimer.expires_from_now (boost::posix_time::seconds(
+				SSU2_KEEP_ALIVE_INTERVAL + rand () % SSU2_KEEP_ALIVE_INTERVAL_VARIANCE));
 			m_IntroducersUpdateTimer.async_wait (std::bind (&SSU2Server::HandleIntroducersUpdateTimer,
 				this, std::placeholders::_1, true));
 		}
@@ -1091,7 +1197,8 @@ namespace transport
 			m_IntroducersUpdateTimer.cancel ();
 			i2p::context.ClearSSU2Introducers (true);
 			m_Introducers.clear ();
-			m_IntroducersUpdateTimer.expires_from_now (boost::posix_time::seconds(SSU2_KEEP_ALIVE_INTERVAL/2));
+			m_IntroducersUpdateTimer.expires_from_now (boost::posix_time::seconds(
+				(SSU2_KEEP_ALIVE_INTERVAL + rand () % SSU2_KEEP_ALIVE_INTERVAL_VARIANCE)/2));
 			m_IntroducersUpdateTimer.async_wait (std::bind (&SSU2Server::HandleIntroducersUpdateTimer,
 				this, std::placeholders::_1, true));
 		}
@@ -1101,7 +1208,8 @@ namespace transport
 	{
 		if (m_IsPublished)
 		{
-			m_IntroducersUpdateTimerV6.expires_from_now (boost::posix_time::seconds(SSU2_KEEP_ALIVE_INTERVAL));
+			m_IntroducersUpdateTimerV6.expires_from_now (boost::posix_time::seconds(
+				SSU2_KEEP_ALIVE_INTERVAL + rand () % SSU2_KEEP_ALIVE_INTERVAL_VARIANCE));
 			m_IntroducersUpdateTimerV6.async_wait (std::bind (&SSU2Server::HandleIntroducersUpdateTimer,
 				this, std::placeholders::_1, false));
 		}
@@ -1114,7 +1222,8 @@ namespace transport
 			m_IntroducersUpdateTimerV6.cancel ();
 			i2p::context.ClearSSU2Introducers (false);
 			m_IntroducersV6.clear ();
-			m_IntroducersUpdateTimerV6.expires_from_now (boost::posix_time::seconds(SSU2_KEEP_ALIVE_INTERVAL/2));
+			m_IntroducersUpdateTimerV6.expires_from_now (boost::posix_time::seconds(
+				(SSU2_KEEP_ALIVE_INTERVAL + rand () % SSU2_KEEP_ALIVE_INTERVAL_VARIANCE)/2));
 			m_IntroducersUpdateTimerV6.async_wait (std::bind (&SSU2Server::HandleIntroducersUpdateTimer,
 				this, std::placeholders::_1, false));
 		}
@@ -1127,7 +1236,7 @@ namespace transport
 			// timeout expired
 			if (v4)
 			{
-				if (i2p::context.GetStatus () == eRouterStatusTesting)
+				if (i2p::context.GetTesting ())
 				{
 					// we still don't know if we need introducers
 					ScheduleIntroducersUpdateTimer ();
@@ -1150,7 +1259,7 @@ namespace transport
 			}
 			else
 			{
-				if (i2p::context.GetStatusV6 () == eRouterStatusTesting)
+				if (i2p::context.GetTestingV6 ())
 				{
 					// we still don't know if we need introducers
 					ScheduleIntroducersUpdateTimerV6 ();

libi2pd/SSU2.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2022-2023, The PurpleI2P Project
+* Copyright (c) 2022-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -10,9 +10,11 @@
 #define SSU2_H__
 
 #include <unordered_map>
+#include <unordered_set>
 #include <mutex>
 #include "util.h"
 #include "SSU2Session.h"
+#include "Socks5.h"
 
 namespace i2p
 {
@@ -20,16 +22,19 @@ namespace transport
 {
 	const int SSU2_TERMINATION_CHECK_TIMEOUT = 25; // in seconds
 	const int SSU2_CLEANUP_INTERVAL = 72; // in seconds
-	const int SSU2_RESEND_CHECK_TIMEOUT = 400; // in milliseconds
-	const int SSU2_RESEND_CHECK_TIMEOUT_VARIANCE = 100; // in milliseconds
-	const int SSU2_RESEND_CHECK_MORE_TIMEOUT = 10; // in milliseconds
+	const int SSU2_RESEND_CHECK_TIMEOUT = 40; // in milliseconds
+	const int SSU2_RESEND_CHECK_TIMEOUT_VARIANCE = 10; // in milliseconds
+	const int SSU2_RESEND_CHECK_MORE_TIMEOUT = 4; // in milliseconds
+	const int SSU2_RESEND_CHECK_MORE_TIMEOUT_VARIANCE = 9; // in milliseconds
 	const size_t SSU2_MAX_RESEND_PACKETS = 128; // packets to resend at the time
-	const size_t SSU2_SOCKET_RECEIVE_BUFFER_SIZE = 0x1FFFF; // 128K
-	const size_t SSU2_SOCKET_SEND_BUFFER_SIZE = 0x1FFFF; // 128K
+	const uint64_t SSU2_SOCKET_MIN_BUFFER_SIZE = 128 * 1024;
+	const uint64_t SSU2_SOCKET_MAX_BUFFER_SIZE = 4 * 1024 * 1024;
 	const size_t SSU2_MAX_NUM_INTRODUCERS = 3;
+	const size_t SSU2_MIN_RECEIVED_PACKET_SIZE = 40; // 16 byte short header + 8 byte minimum payload + 16 byte MAC
 	const int SSU2_TO_INTRODUCER_SESSION_DURATION = 3600; // 1 hour
 	const int SSU2_TO_INTRODUCER_SESSION_EXPIRATION = 4800; // 80 minutes
-	const int SSU2_KEEP_ALIVE_INTERVAL = 30; // in seconds
+	const int SSU2_KEEP_ALIVE_INTERVAL = 15; // in seconds
+	const int SSU2_KEEP_ALIVE_INTERVAL_VARIANCE = 4; // in seconds
 	const int SSU2_PROXY_CONNECT_RETRY_TIMEOUT = 30; // in seconds
 
 	class SSU2Server: private i2p::util::RunnableServiceWithWork
@@ -65,6 +70,7 @@ namespace transport
 			bool IsSupported (const boost::asio::ip::address& addr) const;
 			uint16_t GetPort (bool v4) const;
 			bool IsSyncClockFromPeers () const { return m_IsSyncClockFromPeers; };
+			void AdjustTimeOffset (int64_t offset, std::shared_ptr<const i2p::data::IdentityEx> from);
 
 			void AddSession (std::shared_ptr<SSU2Session> session);
 			void RemoveSession (uint64_t connID);
@@ -73,7 +79,7 @@ namespace transport
 			void RemovePendingOutgoingSession (const boost::asio::ip::udp::endpoint& ep);
 			std::shared_ptr<SSU2Session> FindSession (const i2p::data::IdentHash& ident) const;
 			std::shared_ptr<SSU2Session> FindPendingOutgoingSession (const boost::asio::ip::udp::endpoint& ep) const;
-			std::shared_ptr<SSU2Session> GetRandomSession (i2p::data::RouterInfo::CompatibleTransports remoteTransports,
+			std::shared_ptr<SSU2Session> GetRandomPeerTestSession (i2p::data::RouterInfo::CompatibleTransports remoteTransports,
 				const i2p::data::IdentHash& excluded) const;
 
 			void AddRelay (uint32_t tag, std::shared_ptr<SSU2Session> relay);
@@ -122,7 +128,7 @@ namespace transport
 
 			void ConnectThroughIntroducer (std::shared_ptr<SSU2Session> session);
 			std::list<std::shared_ptr<SSU2Session> > FindIntroducers (int maxNumIntroducers,
-				bool v4, const std::set<i2p::data::IdentHash>& excluded) const;
+				bool v4, const std::unordered_set<i2p::data::IdentHash>& excluded) const;
 			void UpdateIntroducers (bool v4);
 			void ScheduleIntroducersUpdateTimer ();
 			void HandleIntroducersUpdateTimer (const boost::system::error_code& ecode, bool v4);
@@ -160,6 +166,8 @@ namespace transport
 			std::shared_ptr<SSU2Session> m_LastSession;
 			bool m_IsPublished; // if we maintain introducers
 			bool m_IsSyncClockFromPeers;
+			int64_t m_PendingTimeOffset; // during peer test
+			std::shared_ptr<const i2p::data::IdentityEx> m_PendingTimeOffsetFrom;
 
 			// proxy
 			bool m_IsThroughProxy;

libi2pd/SSU2Session.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2022-2023, The PurpleI2P Project
+* Copyright (c) 2022-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -81,13 +81,17 @@ namespace transport
 	SSU2Session::SSU2Session (SSU2Server& server, std::shared_ptr<const i2p::data::RouterInfo> in_RemoteRouter,
 		std::shared_ptr<const i2p::data::RouterInfo::Address> addr):
 		TransportSession (in_RemoteRouter, SSU2_CONNECT_TIMEOUT),
-		m_Server (server), m_Address (addr), m_RemoteTransports (0),
+		m_Server (server), m_Address (addr), m_RemoteTransports (0), m_RemotePeerTestTransports (0),
 		m_DestConnID (0), m_SourceConnID (0), m_State (eSSU2SessionStateUnknown),
 		m_SendPacketNum (0), m_ReceivePacketNum (0), m_LastDatetimeSentPacketNum (0),
-		m_IsDataReceived (false), m_WindowSize (SSU2_MIN_WINDOW_SIZE),
-		m_RTT (SSU2_RESEND_INTERVAL), m_RTO (SSU2_RESEND_INTERVAL*SSU2_kAPPA), m_RelayTag (0),
-		m_ConnectTimer (server.GetService ()), m_TerminationReason (eSSU2TerminationReasonNormalClose),
-		m_MaxPayloadSize (SSU2_MIN_PACKET_SIZE - IPV6_HEADER_SIZE - UDP_HEADER_SIZE - 32) // min size
+		m_IsDataReceived (false), m_RTT (SSU2_UNKNOWN_RTT),
+		m_MsgLocalExpirationTimeout (I2NP_MESSAGE_LOCAL_EXPIRATION_TIMEOUT_MAX),
+		m_MsgLocalSemiExpirationTimeout (I2NP_MESSAGE_LOCAL_EXPIRATION_TIMEOUT_MAX / 2),
+		m_WindowSize (SSU2_MIN_WINDOW_SIZE),
+		m_RTO (SSU2_INITIAL_RTO), m_RelayTag (0),m_ConnectTimer (server.GetService ()), 
+		m_TerminationReason (eSSU2TerminationReasonNormalClose),
+		m_MaxPayloadSize (SSU2_MIN_PACKET_SIZE - IPV6_HEADER_SIZE - UDP_HEADER_SIZE - 32), // min size
+		m_LastResendTime (0)
 	{
 		m_NoiseState.reset (new i2p::crypto::NoiseSymmetricState);
 		if (in_RemoteRouter && m_Address)
@@ -96,6 +100,8 @@ namespace transport
 			InitNoiseXKState1 (*m_NoiseState, m_Address->s);
 			m_RemoteEndpoint = boost::asio::ip::udp::endpoint (m_Address->host, m_Address->port);
 			m_RemoteTransports = in_RemoteRouter->GetCompatibleTransports (false);
+			if (in_RemoteRouter->IsSSU2PeerTesting (true)) m_RemotePeerTestTransports |= i2p::data::RouterInfo::eSSU2V4;
+			if (in_RemoteRouter->IsSSU2PeerTesting (false)) m_RemotePeerTestTransports |= i2p::data::RouterInfo::eSSU2V6;
 			RAND_bytes ((uint8_t *)&m_DestConnID, 8);
 			RAND_bytes ((uint8_t *)&m_SourceConnID, 8);
 		}
@@ -114,6 +120,8 @@ namespace transport
 	{
 		if (m_State == eSSU2SessionStateUnknown || m_State == eSSU2SessionStateTokenReceived)
 		{
+			LogPrint(eLogDebug, "SSU2: Connecting to ", GetRemoteEndpoint (),
+				" (", i2p::data::GetIdentHashAbbreviation (GetRemoteIdentity ()->GetIdentHash ()), ")");
 			ScheduleConnectTimer ();
 			auto token = m_Server.FindOutgoingToken (m_RemoteEndpoint);
 			if (token)
@@ -243,7 +251,7 @@ namespace transport
 		if (IsEstablished ())
 		{
 			uint8_t payload[20];
-			size_t payloadSize = CreatePaddingBlock (payload, 20, 5);
+			size_t payloadSize = CreatePaddingBlock (payload, 20, 8);
 			SendData (payload, payloadSize);
 		}
 	}
@@ -260,8 +268,10 @@ namespace transport
 			m_SentHandshakePacket.reset (nullptr);
 			m_SessionConfirmedFragment.reset (nullptr);
 			m_PathChallenge.reset (nullptr);
+			for (auto& it: m_SendQueue)
+				it->Drop ();
 			m_SendQueue.clear ();
-			m_SendQueueSize = 0;
+			SetSendQueueSize (0);
 			m_SentPackets.clear ();
 			m_IncompleteMessages.clear ();
 			m_RelaySessions.clear ();
@@ -269,7 +279,16 @@ namespace transport
 			m_ReceivedI2NPMsgIDs.clear ();
 			m_Server.RemoveSession (m_SourceConnID);
 			transports.PeerDisconnected (shared_from_this ());
-			LogPrint (eLogDebug, "SSU2: Session terminated");
+			auto remoteIdentity = GetRemoteIdentity ();
+			if (remoteIdentity)
+			{
+				LogPrint (eLogDebug, "SSU2: Session with ", GetRemoteEndpoint (),
+					" (", i2p::data::GetIdentHashAbbreviation (remoteIdentity->GetIdentHash ()), ") terminated");
+			}
+			else
+			{
+				LogPrint (eLogDebug, "SSU2: Session with ", GetRemoteEndpoint (), " terminated");
+			}
 		}
 	}
 
@@ -279,8 +298,10 @@ namespace transport
 		{
 			m_TerminationReason = reason;
 			SendTermination ();
+			m_State = eSSU2SessionStateClosing;
 		}
-		m_State = eSSU2SessionStateClosing;
+		else
+			Done ();
 	}
 
 	void SSU2Session::Established ()
@@ -292,12 +313,15 @@ namespace transport
 		m_SentHandshakePacket.reset (nullptr);
 		m_ConnectTimer.cancel ();
 		SetTerminationTimeout (SSU2_TERMINATION_TIMEOUT);
+		SendQueue ();
 		transports.PeerConnected (shared_from_this ());
 		if (m_OnEstablished)
 		{
 			m_OnEstablished ();
 			m_OnEstablished = nullptr;
 		}
+		LogPrint(eLogDebug, "SSU2: Session with ", GetRemoteEndpoint (),
+			" (", i2p::data::GetIdentHashAbbreviation (GetRemoteIdentity ()->GetIdentHash ()), ") established");
 	}
 
 	void SSU2Session::Done ()
@@ -314,7 +338,7 @@ namespace transport
 				{
 					if (!s->IsEstablished ()) return;
 					uint8_t payload[SSU2_MAX_PACKET_SIZE];
-					size_t payloadSize = s->CreateRouterInfoBlock (payload, s->m_MaxPayloadSize - 32, i2p::context.GetSharedRouterInfo ());
+					size_t payloadSize = s->CreateRouterInfoBlock (payload, s->m_MaxPayloadSize - 32, i2p::context.CopyRouterInfoBuffer ());
 					if (payloadSize)
 					{
 						if (payloadSize < s->m_MaxPayloadSize)
@@ -336,29 +360,57 @@ namespace transport
 	void SSU2Session::PostI2NPMessages (std::vector<std::shared_ptr<I2NPMessage> > msgs)
 	{
 		if (m_State == eSSU2SessionStateTerminated) return;
+		uint64_t mts = i2p::util::GetMonotonicMicroseconds ();
+		bool isSemiFull = false;
+		if (m_SendQueue.size ())
+		{
+			int64_t queueLag = (int64_t)mts - (int64_t)m_SendQueue.front ()->GetEnqueueTime ();
+			isSemiFull = queueLag > m_MsgLocalSemiExpirationTimeout;
+			if (isSemiFull)
+			{
+				LogPrint (eLogWarning, "SSU2: Outgoing messages queue to ",
+					i2p::data::GetIdentHashAbbreviation (GetRemoteIdentity ()->GetIdentHash ()),
+					" is semi-full (size = ", m_SendQueue.size (), ", lag = ", queueLag / 1000, ", rtt = ", (int)m_RTT, ")");
+			}
+		}
 		for (auto it: msgs)
-			m_SendQueue.push_back (std::move (it));
-		SendQueue ();
-
-		if (m_SendQueue.size () > 0) // windows is full
 		{
-			if (m_SendQueue.size () <= SSU2_MAX_OUTGOING_QUEUE_SIZE)
-				Resend (i2p::util::GetMillisecondsSinceEpoch ());
+			if (isSemiFull && it->onDrop)
+				it->Drop (); // drop earlier because we can handle it
 			else
 			{
-				LogPrint (eLogWarning, "SSU2: Outgoing messages queue size to ",
-					GetIdentHashBase64(), " exceeds ", SSU2_MAX_OUTGOING_QUEUE_SIZE);
-				RequestTermination (eSSU2TerminationReasonTimeout);
+				it->SetEnqueueTime (mts);
+				m_SendQueue.push_back (std::move (it));
 			}
 		}
-		m_SendQueueSize = m_SendQueue.size ();
+		SendQueue ();
+
+		if (m_SendQueue.size () > 0) // windows is full
+			Resend (i2p::util::GetMillisecondsSinceEpoch ());
+		SetSendQueueSize (m_SendQueue.size ());
 	}
 
+	void SSU2Session::MoveSendQueue (std::shared_ptr<SSU2Session> other)
+	{
+		if (!other || m_SendQueue.empty ()) return;
+		std::vector<std::shared_ptr<I2NPMessage> > msgs;
+		auto ts = i2p::util::GetMillisecondsSinceEpoch ();
+		for (auto it: m_SendQueue)
+			if (!it->IsExpired (ts))
+				msgs.push_back (it);
+			else
+				it->Drop ();
+		m_SendQueue.clear ();
+		if (!msgs.empty ())
+			other->PostI2NPMessages (msgs);
+	}	
+		
 	bool SSU2Session::SendQueue ()
 	{
-		if (!m_SendQueue.empty () && m_SentPackets.size () <= m_WindowSize)
+		if (!m_SendQueue.empty () && m_SentPackets.size () <= m_WindowSize && IsEstablished ())
 		{
 			auto ts = i2p::util::GetMillisecondsSinceEpoch ();
+			uint64_t mts = i2p::util::GetMonotonicMicroseconds ();
 			auto packet = m_Server.GetSentPacketsPool ().AcquireShared ();
 			size_t ackBlockSize = CreateAckBlock (packet->payload, m_MaxPayloadSize);
 			bool ackBlockSent = false;
@@ -366,8 +418,10 @@ namespace transport
 			while (!m_SendQueue.empty () && m_SentPackets.size () <= m_WindowSize)
 			{
 				auto msg = m_SendQueue.front ();
-				if (!msg)
+				if (!msg || msg->IsExpired (ts) || msg->GetEnqueueTime() + m_MsgLocalExpirationTimeout < mts)
 				{
+					// drop null or expired message
+					if (msg) msg->Drop ();
 					m_SendQueue.pop_front ();
 					continue;
 				}
@@ -504,14 +558,14 @@ namespace transport
 		if (m_SentPackets.empty ()) return 0;
 		std::map<uint32_t, std::shared_ptr<SSU2SentPacket> > resentPackets;
 		for (auto it = m_SentPackets.begin (); it != m_SentPackets.end (); )
-			if (ts >= it->second->sendTime + it->second->numResends*m_RTO)
+			if (ts >= it->second->sendTime + (it->second->numResends + 1) * m_RTO)
 			{
 				if (it->second->numResends > SSU2_MAX_NUM_RESENDS)
 				{
 					LogPrint (eLogInfo, "SSU2: Packet was not Acked after ", it->second->numResends, " attempts. Terminate session");
 					m_SentPackets.clear ();
 					m_SendQueue.clear ();
-					m_SendQueueSize = 0;
+					SetSendQueueSize (0);
 					RequestTermination (eSSU2TerminationReasonTimeout);
 					return resentPackets.size ();
 				}
@@ -528,6 +582,7 @@ namespace transport
 				it++;
 		if (!resentPackets.empty ())
 		{
+			m_LastResendTime = ts;
 #if (__cplusplus >= 201703L) // C++ 17 or higher
 			m_SentPackets.merge (resentPackets);
 #else
@@ -844,12 +899,12 @@ namespace transport
 		// payload
 		size_t maxPayloadSize = m_MaxPayloadSize - 48; // for part 2, 48 is part1
 		uint8_t * payload = m_SentHandshakePacket->payload;
-		size_t payloadSize = CreateRouterInfoBlock (payload, maxPayloadSize, i2p::context.GetSharedRouterInfo ());
+		size_t payloadSize = CreateRouterInfoBlock (payload, maxPayloadSize, i2p::context.CopyRouterInfoBuffer ());
 		if (!payloadSize)
 		{
 			// split by two fragments
 			maxPayloadSize += m_MaxPayloadSize;
-			payloadSize = CreateRouterInfoBlock (payload, maxPayloadSize, i2p::context.GetSharedRouterInfo ());
+			payloadSize = CreateRouterInfoBlock (payload, maxPayloadSize, i2p::context.CopyRouterInfoBuffer ());
 			header.h.flags[0] = 0x02; // frag 0, total fragments 2
 			// TODO: check if we need more fragments
 		}
@@ -1053,6 +1108,17 @@ namespace transport
 			LogPrint (eLogError, "SSU2: SessionConfirmed malformed RouterInfo block");
 			return false;
 		}
+		auto ts = i2p::util::GetMillisecondsSinceEpoch();
+		if (ts > ri->GetTimestamp () + i2p::data::NETDB_MIN_EXPIRATION_TIMEOUT*1000LL) // 90 minutes
+		{
+			LogPrint (eLogError, "SSU2: RouterInfo in SessionConfirmed is too old for ", (ts - ri->GetTimestamp ())/1000LL, " seconds");
+			return false;
+		}	
+		if (ts + i2p::data::NETDB_EXPIRATION_TIMEOUT_THRESHOLD*1000LL < ri->GetTimestamp ()) // 2 minutes
+		{
+			LogPrint (eLogError, "SSU2: RouterInfo in SessionConfirmed is from future for ", (ri->GetTimestamp () - ts)/1000LL, " seconds");
+			return false;
+		}	
 		m_Address = m_RemoteEndpoint.address ().is_v6 () ? ri->GetSSU2V6Address () : ri->GetSSU2V4Address ();
 		if (!m_Address || memcmp (S, m_Address->s, 32))
 		{
@@ -1078,6 +1144,10 @@ namespace transport
 		AdjustMaxPayloadSize ();
 		m_Server.AddSessionByRouterHash (shared_from_this ()); // we know remote router now
 		m_RemoteTransports = ri->GetCompatibleTransports (false);
+		m_RemotePeerTestTransports = 0;
+		if (ri->IsSSU2PeerTesting (true)) m_RemotePeerTestTransports |= i2p::data::RouterInfo::eSSU2V4;
+		if (ri->IsSSU2PeerTesting (false)) m_RemotePeerTestTransports |= i2p::data::RouterInfo::eSSU2V6;
+
 		// handle other blocks
 		HandlePayload (decryptedPayload.data () + riSize + 3, decryptedPayload.size () - riSize - 3);
 		Established ();
@@ -1428,8 +1498,7 @@ namespace transport
 		header.ll[1] ^= CreateHeaderMask (m_KeyDataSend + 32, payload + (len + 4));
 		m_Server.Send (header.buf, 16, payload, len + 16, m_RemoteEndpoint);
 		m_SendPacketNum++;
-		m_LastActivityTimestamp = i2p::util::GetSecondsSinceEpoch ();
-		m_NumSentBytes += len + 32;
+		UpdateNumSentBytes (len + 32);
 		return m_SendPacketNum - 1;
 	}
 
@@ -1448,7 +1517,7 @@ namespace transport
 				ResendHandshakePacket (); // assume we receive
 			return;
 		}
-		if (from != m_RemoteEndpoint && !i2p::util::net::IsInReservedRange (from.address ()))
+		if (from != m_RemoteEndpoint && !i2p::transport::transports.IsInReservedRange (from.address ()))
 		{
 			LogPrint (eLogInfo, "SSU2: Remote endpoint update ", m_RemoteEndpoint, "->", from);
 			m_RemoteEndpoint = from;
@@ -1470,8 +1539,7 @@ namespace transport
 			LogPrint (eLogWarning, "SSU2: Data AEAD verification failed ");
 			return;
 		}
-		m_LastActivityTimestamp = i2p::util::GetSecondsSinceEpoch ();
-		m_NumReceivedBytes += len;
+		UpdateNumReceivedBytes (len);
 		if (!packetNum || UpdateReceivePacketNum (packetNum))
 			HandlePayload (payload, payloadSize);
 	}
@@ -1486,7 +1554,7 @@ namespace transport
 			auto size = bufbe16toh (buf + offset);
 			offset += 2;
 			LogPrint (eLogDebug, "SSU2: Block type ", (int)blk, " of size ", size);
-			if (size > len)
+			if (offset + size > len)
 			{
 				LogPrint (eLogError, "SSU2: Unexpected block length ", size);
 				break;
@@ -1532,16 +1600,21 @@ namespace transport
 				break;
 				case eSSU2BlkTermination:
 				{
-					uint8_t rsn = buf[11]; // reason
-					LogPrint (eLogDebug, "SSU2: Termination reason=", (int)rsn);
-					if (IsEstablished () && rsn != eSSU2TerminationReasonTerminationReceived)
-						RequestTermination (eSSU2TerminationReasonTerminationReceived);
-					else if (m_State != eSSU2SessionStateTerminated)
+					if (size >= 9)
 					{
-						if (m_State == eSSU2SessionStateClosing && rsn == eSSU2TerminationReasonTerminationReceived)
-							m_State = eSSU2SessionStateClosingConfirmed;
-						Done ();
+						uint8_t rsn = buf[offset + 8]; // reason
+						LogPrint (eLogDebug, "SSU2: Termination reason=", (int)rsn);
+						if (IsEstablished () && rsn != eSSU2TerminationReasonTerminationReceived)
+							RequestTermination (eSSU2TerminationReasonTerminationReceived);
+						else if (m_State != eSSU2SessionStateTerminated)
+						{
+							if (m_State == eSSU2SessionStateClosing && rsn == eSSU2TerminationReasonTerminationReceived)
+								m_State = eSSU2SessionStateClosingConfirmed;
+							Done ();
+						}
 					}
+					else
+						LogPrint(eLogWarning, "SSU2: Unexpected termination block size ", size);
 					break;
 				}
 				case eSSU2BlkRelayRequest:
@@ -1635,16 +1708,18 @@ namespace transport
 			break;
 			case eSSU2SessionStateSessionCreatedReceived:
 			case eSSU2SessionStateTokenReceived:
-				if ((m_RemoteEndpoint.address ().is_v4 () && i2p::context.GetStatus () == eRouterStatusTesting) ||
-				    (m_RemoteEndpoint.address ().is_v6 () && i2p::context.GetStatusV6 () == eRouterStatusTesting))
+				if ((m_RemoteEndpoint.address ().is_v4 () && i2p::context.GetTesting ()) ||
+				    (m_RemoteEndpoint.address ().is_v6 () && i2p::context.GetTestingV6 ()))
 				{
 					if (m_Server.IsSyncClockFromPeers ())
 					{
 						if (std::abs (offset) > SSU2_CLOCK_THRESHOLD)
-						{
-							LogPrint (eLogWarning, "SSU2: Clock adjusted by ", -offset, " seconds");
-							i2p::util::AdjustTimeOffset (-offset);
-						}
+						{	
+							LogPrint (eLogWarning, "SSU2: Time offset ", offset, " from ", m_RemoteEndpoint);
+							m_Server.AdjustTimeOffset (-offset, GetRemoteIdentity ());
+						}	
+						else
+							m_Server.AdjustTimeOffset (0, nullptr);
 					}
 					else if (std::abs (offset) > SSU2_CLOCK_SKEW)
 					{
@@ -1700,8 +1775,15 @@ namespace transport
 				if (ts > it1->second->sendTime)
 				{
 					auto rtt = ts - it1->second->sendTime;
-					m_RTT = std::round ((m_RTT*m_SendPacketNum + rtt)/(m_SendPacketNum + 1.0));
+					if (m_RTT != SSU2_UNKNOWN_RTT)
+						m_RTT = SSU2_RTT_EWMA_ALPHA * rtt + (1.0 - SSU2_RTT_EWMA_ALPHA) * m_RTT;
+					else
+						m_RTT = rtt;
 					m_RTO = m_RTT*SSU2_kAPPA;
+					m_MsgLocalExpirationTimeout = std::max (I2NP_MESSAGE_LOCAL_EXPIRATION_TIMEOUT_MIN,
+						std::min (I2NP_MESSAGE_LOCAL_EXPIRATION_TIMEOUT_MAX,
+						(unsigned int)(m_RTT * 1000 * I2NP_MESSAGE_LOCAL_EXPIRATION_TIMEOUT_FACTOR)));
+					m_MsgLocalSemiExpirationTimeout = m_MsgLocalExpirationTimeout / 2;
 					if (m_RTO < SSU2_MIN_RTO) m_RTO = SSU2_MIN_RTO;
 					if (m_RTO > SSU2_MAX_RTO) m_RTO = SSU2_MAX_RTO;
 				}
@@ -1724,7 +1806,7 @@ namespace transport
 		if (ExtractEndpoint (buf, len, ep))
 		{
 			LogPrint (eLogInfo, "SSU2: Our external address is ", ep);
-			if (!i2p::util::net::IsInReservedRange (ep.address ()))
+			if (!i2p::transport::transports.IsInReservedRange (ep.address ()))
 			{
 				i2p::context.UpdateAddress (ep.address ());
 				// check our port
@@ -1734,14 +1816,14 @@ namespace transport
 					LogPrint (eLogInfo, "SSU2: Our port ", ep.port (), " received from ", m_RemoteEndpoint, " is different from ", m_Server.GetPort (isV4));
 					if (isV4)
 					{
-						if (i2p::context.GetStatus () == eRouterStatusTesting)
+						if (i2p::context.GetTesting ())
 							i2p::context.SetError (eRouterErrorSymmetricNAT);
 						else if (m_State == eSSU2SessionStatePeerTest)
 							i2p::context.SetError (eRouterErrorFullConeNAT);
 					}
 					else
 					{
-						if (i2p::context.GetStatusV6 () == eRouterStatusTesting)
+						if (i2p::context.GetTestingV6 ())
 							i2p::context.SetErrorV6 (eRouterErrorSymmetricNAT);
 						else if (m_State == eSSU2SessionStatePeerTest)
 							i2p::context.SetErrorV6 (eRouterErrorFullConeNAT);
@@ -2072,7 +2154,7 @@ namespace transport
 		{
 			case 1: // Bob from Alice
 			{
-				auto session = m_Server.GetRandomSession ((buf[12] == 6) ? i2p::data::RouterInfo::eSSU2V4 : i2p::data::RouterInfo::eSSU2V6,
+				auto session = m_Server.GetRandomPeerTestSession ((buf[12] == 6) ? i2p::data::RouterInfo::eSSU2V4 : i2p::data::RouterInfo::eSSU2V6,
 					GetRemoteIdentity ()->GetIdentHash ());
 				if (session) // session with Charlie
 				{
@@ -2143,7 +2225,8 @@ namespace transport
 								std::shared_ptr<const i2p::data::RouterInfo::Address> addr;
 								if (ExtractEndpoint (buf + offset + 10, asz, ep))
 									addr = r->GetSSU2Address (ep.address ().is_v4 ());
-								if (addr && m_Server.IsSupported (ep.address ()))
+								if (addr && m_Server.IsSupported (ep.address ()) && 
+								    i2p::context.GetRouterInfo ().IsSSU2PeerTesting (ep.address ().is_v4 ()))
 								{
 									// send msg 5 to Alice
 									auto session = std::make_shared<SSU2Session> (m_Server, r, addr);
@@ -2214,7 +2297,7 @@ namespace transport
 					if (buf[1] == eSSU2PeerTestCodeAccept)
 					{
 						if (GetRouterStatus () == eRouterStatusUnknown)
-							SetRouterStatus (eRouterStatusTesting);
+							SetTestingState (true);
 						auto r = i2p::data::netdb.FindRouter (buf + 3); // find Charlie
 						if (r && it->second.first)
 						{
@@ -2240,13 +2323,17 @@ namespace transport
 									}
 									else
 									{
-										if (GetRouterStatus () == eRouterStatusTesting)
+										if (GetTestingState ())
 										{
-											SetRouterStatus (eRouterStatusFirewalled);
-											if (m_Address->IsV4 ())
-												m_Server.RescheduleIntroducersUpdateTimer ();
-											else
-												m_Server.RescheduleIntroducersUpdateTimerV6 ();
+											SetTestingState (false);
+											if (GetRouterStatus () != eRouterStatusFirewalled && addr->IsPeerTesting ())
+											{
+												SetRouterStatus (eRouterStatusFirewalled);
+												if (m_Address->IsV4 ())
+													m_Server.RescheduleIntroducersUpdateTimer ();
+												else
+													m_Server.RescheduleIntroducersUpdateTimerV6 ();
+											}
 										}
 									}
 									LogPrint (eLogDebug, "SSU2: Peer test 4 received from ", i2p::data::GetIdentHashAbbreviation (GetRemoteIdentity ()->GetIdentHash ()),
@@ -2275,7 +2362,7 @@ namespace transport
 					{
 						LogPrint (eLogInfo, "SSU2: Peer test 4 error code ", (int)buf[1], " from ",
 							i2p::data::GetIdentHashAbbreviation (buf[1] < 64 ? GetRemoteIdentity ()->GetIdentHash () : i2p::data::IdentHash (buf + 3)));
-						if (GetRouterStatus () == eRouterStatusTesting)
+						if (GetTestingState ())
 							SetRouterStatus (eRouterStatusUnknown);
 						it->second.first->Done ();
 					}
@@ -2324,7 +2411,7 @@ namespace transport
 		if (!msg->IsExpired ())
 		{
 			// m_LastActivityTimestamp is updated in ProcessData before
-			if (m_ReceivedI2NPMsgIDs.emplace (msgID, (uint32_t)m_LastActivityTimestamp).second)
+			if (m_ReceivedI2NPMsgIDs.emplace (msgID, (uint32_t)GetLastActivityTimestamp ()).second)
 				m_Handler.PutNextMessage (std::move (msg));
 			else
 				LogPrint (eLogDebug, "SSU2: Message ", msgID, " already received");
@@ -2429,6 +2516,31 @@ namespace transport
 		}
 	}
 
+	bool SSU2Session::GetTestingState () const
+	{
+		if (m_Address)
+		{
+			if (m_Address->IsV4 ())
+				return i2p::context.GetTesting ();
+			if (m_Address->IsV6 ())
+				return i2p::context.GetTestingV6 ();
+		}
+		return false;
+	}
+
+	void SSU2Session::SetTestingState (bool testing) const
+	{
+		if (m_Address)
+		{
+			if (m_Address->IsV4 ())
+				i2p::context.SetTesting (testing);
+			else if (m_Address->IsV6 ())
+				i2p::context.SetTestingV6 (testing);
+		}
+		if (!testing)
+			m_Server.AdjustTimeOffset (0, nullptr); // reset time offset when testing is over
+	}
+
 	size_t SSU2Session::CreateAddressBlock (uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& ep)
 	{
 		if (len < 9) return 0;
@@ -2441,27 +2553,34 @@ namespace transport
 
 	size_t SSU2Session::CreateRouterInfoBlock (uint8_t * buf, size_t len, std::shared_ptr<const i2p::data::RouterInfo> r)
 	{
-		if (!r || !r->GetBuffer () || len < 5) return 0;
+		if (!r || len < 5) return 0;
+		return CreateRouterInfoBlock (buf, len, r->GetSharedBuffer ());
+	}
+
+	size_t SSU2Session::CreateRouterInfoBlock (uint8_t * buf, size_t len, std::shared_ptr<const i2p::data::RouterInfo::Buffer> riBuffer)
+	{
+		if (!riBuffer || len < 5) return 0;
 		buf[0] = eSSU2BlkRouterInfo;
-		size_t size = r->GetBufferLen ();
+		size_t size = riBuffer->GetBufferLen ();
 		if (size + 5 < len)
 		{
-			memcpy (buf + 5, r->GetBuffer (), size);
+			memcpy (buf + 5, riBuffer->data (), size);
 			buf[3] = 0; // flag
 		}
 		else
 		{
 			i2p::data::GzipDeflator deflator;
 			deflator.SetCompressionLevel (9);
-			size = deflator.Deflate (r->GetBuffer (), r->GetBufferLen (), buf + 5, len - 5);
+			size = deflator.Deflate (riBuffer->data (), riBuffer->GetBufferLen (), buf + 5, len - 5);
 			if (!size) return 0; // doesn't fit
 			buf[3] = SSU2_ROUTER_INFO_FLAG_GZIP; // flag
 		}
 		htobe16buf (buf + 1, size + 2); // size
 		buf[4] = 1; // frag
 		return size + 5;
-	}
-
+	}	
+	
+		
 	size_t SSU2Session::CreateAckBlock (uint8_t * buf, size_t len)
 	{
 		if (len < 8) return 0;
@@ -2841,7 +2960,7 @@ namespace transport
 
 	void SSU2Session::SendPathResponse (const uint8_t * data, size_t len)
 	{
-		if (len < 8 || len > m_MaxPayloadSize - 3)
+		if (len > m_MaxPayloadSize - 3)
 		{
 			LogPrint (eLogWarning, "SSU2: Incorrect data size for path response ", len);
 			return;
@@ -2850,7 +2969,10 @@ namespace transport
 		payload[0] = eSSU2BlkPathResponse;
 		htobe16buf (payload + 1, len);
 		memcpy (payload + 3, data, len);
-		SendData (payload, len + 3);
+		size_t payloadSize = len + 3;	
+		if (payloadSize < m_MaxPayloadSize)
+			payloadSize += CreatePaddingBlock (payload + payloadSize, m_MaxPayloadSize - payloadSize, payloadSize < 8 ? 8 : 0);
+		SendData (payload, payloadSize);
 	}
 
 	void SSU2Session::SendPathChallenge ()
@@ -2868,7 +2990,7 @@ namespace transport
 		}
 		len += 3;
 		if (len < m_MaxPayloadSize)
-			len += CreatePaddingBlock (payload + len, m_MaxPayloadSize - len);
+			len += CreatePaddingBlock (payload + len, m_MaxPayloadSize - len, len < 8 ? 8 : 0);
 		SendData (payload, len);
 	}
 
@@ -2884,7 +3006,7 @@ namespace transport
 			else
 				++it;
 		}
-		if (m_ReceivedI2NPMsgIDs.size () > SSU2_MAX_NUM_RECEIVED_I2NP_MSGIDS || ts > m_LastActivityTimestamp + SSU2_DECAY_INTERVAL)
+		if (m_ReceivedI2NPMsgIDs.size () > SSU2_MAX_NUM_RECEIVED_I2NP_MSGIDS || ts > GetLastActivityTimestamp () + SSU2_DECAY_INTERVAL)
 			// decay
 			m_ReceivedI2NPMsgIDs.clear ();
 		else
@@ -2956,7 +3078,7 @@ namespace transport
 	{
 		bool sent = SendQueue (); // if we have something to send
 		if (sent)
-			m_SendQueueSize = m_SendQueue.size ();
+			SetSendQueueSize (m_SendQueue.size ());
 		if (m_IsDataReceived)
 		{
 			if (!sent) SendQuickAck ();

libi2pd/SSU2Session.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2022-2023, The PurpleI2P Project
+* Copyright (c) 2022-2024, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -25,7 +25,7 @@ namespace i2p
 namespace transport
 {
 	const int SSU2_CONNECT_TIMEOUT = 5; // 5 seconds
-	const int SSU2_TERMINATION_TIMEOUT = 330; // 5.5 minutes
+	const int SSU2_TERMINATION_TIMEOUT = 165; // in seconds
 	const int SSU2_CLOCK_SKEW = 60; // in seconds
 	const int SSU2_CLOCK_THRESHOLD = 15; // in seconds, if more we should adjust
 	const int SSU2_TOKEN_EXPIRATION_TIMEOUT = 9; // for Retry message, in seconds
@@ -36,7 +36,6 @@ namespace transport
 	const size_t SSU2_MAX_PACKET_SIZE = 1500;
 	const size_t SSU2_MIN_PACKET_SIZE = 1280;
 	const int SSU2_HANDSHAKE_RESEND_INTERVAL = 1000; // in milliseconds
-	const int SSU2_RESEND_INTERVAL = 300; // in milliseconds
 	const int SSU2_MAX_NUM_RESENDS = 5;
 	const int SSU2_INCOMPLETE_MESSAGES_CLEANUP_TIMEOUT = 30; // in seconds
 	const int SSU2_MAX_NUM_RECEIVED_I2NP_MSGIDS = 5000; // how many msgID we store for duplicates check
@@ -45,9 +44,11 @@ namespace transport
 	const size_t SSU2_MIN_WINDOW_SIZE = 16; // in packets
 	const size_t SSU2_MAX_WINDOW_SIZE = 256; // in packets
 	const size_t SSU2_MIN_RTO = 100; // in milliseconds
+	const size_t SSU2_INITIAL_RTO = 540; // in milliseconds
 	const size_t SSU2_MAX_RTO = 2500; // in milliseconds
+	const double SSU2_UNKNOWN_RTT = -1;
+	const double SSU2_RTT_EWMA_ALPHA = 0.125;
 	const float SSU2_kAPPA = 1.8;
-	const size_t SSU2_MAX_OUTGOING_QUEUE_SIZE = 500; // in messages
 	const int SSU2_MAX_NUM_ACNT = 255; // acnt, acks or nacks
 	const int SSU2_MAX_NUM_ACK_PACKETS = 511; // ackthrough + acnt + 1 range
 	const int SSU2_MAX_NUM_ACK_RANGES = 32; // to send
@@ -238,6 +239,7 @@ namespace transport
 			void SetRemoteEndpoint (const boost::asio::ip::udp::endpoint& ep) { m_RemoteEndpoint = ep; };
 			const boost::asio::ip::udp::endpoint& GetRemoteEndpoint () const { return m_RemoteEndpoint; };
 			i2p::data::RouterInfo::CompatibleTransports GetRemoteTransports () const { return m_RemoteTransports; };
+			i2p::data::RouterInfo::CompatibleTransports GetRemotePeerTestTransports () const { return m_RemotePeerTestTransports; };
 			std::shared_ptr<const i2p::data::RouterInfo::Address> GetAddress () const { return m_Address; };
 			void SetOnEstablished (OnEstablished e) { m_OnEstablished = e; };
 			OnEstablished GetOnEstablished () const { return m_OnEstablished; };
@@ -253,8 +255,10 @@ namespace transport
 			void Done () override;
 			void SendLocalRouterInfo (bool update) override;
 			void SendI2NPMessages (const std::vector<std::shared_ptr<I2NPMessage> >& msgs) override;
+			void MoveSendQueue (std::shared_ptr<SSU2Session> other);
 			uint32_t GetRelayTag () const override { return m_RelayTag; };
-			size_t Resend (uint64_t ts); // return number or resent packets
+			size_t Resend (uint64_t ts); // return number of resent packets
+			uint64_t GetLastResendTime () const { return m_LastResendTime; };
 			bool IsEstablished () const override { return m_State == eSSU2SessionStateEstablished; };
 			uint64_t GetConnID () const { return m_SourceConnID; };
 			SSU2SessionState GetState () const { return m_State; };
@@ -308,6 +312,8 @@ namespace transport
 			void AdjustMaxPayloadSize ();
 			RouterStatus GetRouterStatus () const;
 			void SetRouterStatus (RouterStatus status) const;
+			bool GetTestingState () const;
+			void SetTestingState(bool testing) const;
 			std::shared_ptr<const i2p::data::RouterInfo> ExtractRouterInfo (const uint8_t * buf, size_t size);
 			void CreateNonce (uint64_t seqn, uint8_t * nonce);
 			bool UpdateReceivePacketNum (uint32_t packetNum); // for Ack, returns false if duplicate
@@ -321,6 +327,7 @@ namespace transport
 
 			size_t CreateAddressBlock (uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& ep);
 			size_t CreateRouterInfoBlock (uint8_t * buf, size_t len, std::shared_ptr<const i2p::data::RouterInfo> r);
+			size_t CreateRouterInfoBlock (uint8_t * buf, size_t len, std::shared_ptr<const i2p::data::RouterInfo::Buffer> riBuffer);
 			size_t CreateAckBlock (uint8_t * buf, size_t len);
 			size_t CreatePaddingBlock (uint8_t * buf, size_t len, size_t minSize = 0);
 			size_t CreateI2NPBlock (uint8_t * buf, size_t len, std::shared_ptr<I2NPMessage>&& msg);
@@ -341,7 +348,7 @@ namespace transport
 			std::unique_ptr<HandshakePacket> m_SentHandshakePacket; // SessionRequest, SessionCreated or SessionConfirmed
 			std::shared_ptr<const i2p::data::RouterInfo::Address> m_Address;
 			boost::asio::ip::udp::endpoint m_RemoteEndpoint;
-			i2p::data::RouterInfo::CompatibleTransports m_RemoteTransports; // for peer tests
+			i2p::data::RouterInfo::CompatibleTransports m_RemoteTransports, m_RemotePeerTestTransports; 
 			uint64_t m_DestConnID, m_SourceConnID;
 			SSU2SessionState m_State;
 			uint8_t m_KeyDataSend[64], m_KeyDataReceive[64];
@@ -354,7 +361,10 @@ namespace transport
 			std::list<std::shared_ptr<I2NPMessage> > m_SendQueue;
 			i2p::I2NPMessagesHandler m_Handler;
 			bool m_IsDataReceived;
-			size_t m_WindowSize, m_RTT, m_RTO;
+			double m_RTT;
+			int m_MsgLocalExpirationTimeout;
+			int m_MsgLocalSemiExpirationTimeout;
+			size_t m_WindowSize, m_RTO;
 			uint32_t m_RelayTag; // between Bob and Charlie
 			OnEstablished m_OnEstablished; // callback from Established
 			boost::asio::deadline_timer m_ConnectTimer;
@@ -362,6 +372,7 @@ namespace transport
 			size_t m_MaxPayloadSize;
 			std::unique_ptr<i2p::data::IdentHash> m_PathChallenge;
 			std::unordered_map<uint32_t, uint32_t> m_ReceivedI2NPMsgIDs; // msgID -> timestamp in seconds
+			uint64_t m_LastResendTime; // in milliseconds
 	};
 
 	inline uint64_t CreateHeaderMask (const uint8_t * kh, const uint8_t * nonce)

libi2pd/Signature.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2021, The PurpleI2P Project
+* Copyright (c) 2013-2023, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -15,26 +15,35 @@ namespace i2p
 namespace crypto
 {
 #if OPENSSL_EDDSA
-	EDDSA25519Verifier::EDDSA25519Verifier ()
+	EDDSA25519Verifier::EDDSA25519Verifier ():
+		m_Pkey (nullptr)
 	{
-		m_MDCtx = EVP_MD_CTX_create ();
 	}
 
 	EDDSA25519Verifier::~EDDSA25519Verifier ()
 	{
-		EVP_MD_CTX_destroy (m_MDCtx);
+		EVP_PKEY_free (m_Pkey);
 	}
 
 	void EDDSA25519Verifier::SetPublicKey (const uint8_t * signingKey)
 	{
-		EVP_PKEY * pkey = EVP_PKEY_new_raw_public_key (EVP_PKEY_ED25519, NULL, signingKey, 32);
-		EVP_DigestVerifyInit (m_MDCtx, NULL, NULL, NULL, pkey);
-		EVP_PKEY_free (pkey);
+		if (m_Pkey) EVP_PKEY_free (m_Pkey);
+		m_Pkey = EVP_PKEY_new_raw_public_key (EVP_PKEY_ED25519, NULL, signingKey, 32);
 	}
 
 	bool EDDSA25519Verifier::Verify (const uint8_t * buf, size_t len, const uint8_t * signature) const
 	{
-		return EVP_DigestVerify (m_MDCtx, signature, 64, buf, len);
+		if (m_Pkey)
+		{	
+			EVP_MD_CTX * ctx = EVP_MD_CTX_create ();
+			EVP_DigestVerifyInit (ctx, NULL, NULL, NULL, m_Pkey);
+			auto ret = EVP_DigestVerify (ctx, signature, 64, buf, len);
+			EVP_MD_CTX_destroy (ctx);	
+			return ret;	
+		}	
+		else
+			LogPrint (eLogError, "EdDSA verification key is not set");
+		return false;
 	}
 
 #else
@@ -99,41 +108,45 @@ namespace crypto
 
 #if OPENSSL_EDDSA
 	EDDSA25519Signer::EDDSA25519Signer (const uint8_t * signingPrivateKey, const uint8_t * signingPublicKey):
-		m_MDCtx (nullptr), m_Fallback (nullptr)
+		m_Pkey (nullptr), m_Fallback (nullptr)
 	{
-		EVP_PKEY * pkey = EVP_PKEY_new_raw_private_key (EVP_PKEY_ED25519, NULL, signingPrivateKey, 32);
+		m_Pkey = EVP_PKEY_new_raw_private_key (EVP_PKEY_ED25519, NULL, signingPrivateKey, 32);
 		uint8_t publicKey[EDDSA25519_PUBLIC_KEY_LENGTH];
 		size_t len = EDDSA25519_PUBLIC_KEY_LENGTH;
-		EVP_PKEY_get_raw_public_key (pkey, publicKey, &len);
+		EVP_PKEY_get_raw_public_key (m_Pkey, publicKey, &len);
 		if (signingPublicKey && memcmp (publicKey, signingPublicKey, EDDSA25519_PUBLIC_KEY_LENGTH))
 		{
 			LogPrint (eLogWarning, "EdDSA public key mismatch. Fallback");
 			m_Fallback = new EDDSA25519SignerCompat (signingPrivateKey, signingPublicKey);
+			EVP_PKEY_free (m_Pkey);
+			m_Pkey = nullptr;
 		}
-		else
-		{
-			m_MDCtx = EVP_MD_CTX_create ();
-			EVP_DigestSignInit (m_MDCtx, NULL, NULL, NULL, pkey);
-		}
-		EVP_PKEY_free (pkey);
 	}
 
 	EDDSA25519Signer::~EDDSA25519Signer ()
 	{
 		if (m_Fallback) delete m_Fallback;
-		EVP_MD_CTX_destroy (m_MDCtx);
+		if (m_Pkey) EVP_PKEY_free (m_Pkey);
 	}
 
 	void EDDSA25519Signer::Sign (const uint8_t * buf, int len, uint8_t * signature) const
 	{
-		if (m_Fallback) return m_Fallback->Sign (buf, len, signature);
-		else
+		if (m_Fallback) 
+			return m_Fallback->Sign (buf, len, signature);
+		else if (m_Pkey)
 		{
+				
+			EVP_MD_CTX * ctx = EVP_MD_CTX_create ();
 			size_t l = 64;
 			uint8_t sig[64]; // temporary buffer for signature. openssl issue #7232
-			EVP_DigestSign (m_MDCtx, sig, &l, buf, len);
+			EVP_DigestSignInit (ctx, NULL, NULL, NULL, m_Pkey);
+			if (!EVP_DigestSign (ctx, sig, &l, buf, len))
+				LogPrint (eLogError, "EdDSA signing failed");
 			memcpy (signature, sig, 64);
+			EVP_MD_CTX_destroy (ctx);
 		}
+		else
+			LogPrint (eLogError, "EdDSA signing key is not set");
 	}
 #endif
 }

libi2pd/Signature.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013-2021, The PurpleI2P Project
+* Copyright (c) 2013-2023, The PurpleI2P Project
 *
 * This file is part of Purple i2pd project and licensed under BSD3
 *
@@ -304,7 +304,7 @@ namespace crypto
 		private:
 
 #if OPENSSL_EDDSA
-			EVP_MD_CTX * m_MDCtx;
+			EVP_PKEY * m_Pkey;
 #else
 			EDDSAPoint m_PublicKey;
 			uint8_t m_PublicKeyEncoded[EDDSA25519_PUBLIC_KEY_LENGTH];
@@ -341,7 +341,7 @@ namespace crypto
 
 		private:
 
-			EVP_MD_CTX * m_MDCtx;
+			EVP_PKEY * m_Pkey;
 			EDDSA25519SignerCompat * m_Fallback;
 	};
 #else