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@ -1,6 +1,67 @@
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# for this file format description,
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# see https://github.com/olivierlacan/keep-a-changelog
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## [2.51.0] - 2024-04-06
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### Added
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- Non-blocking mode for UDP sockets
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- Set SSU2 socket buffer size based on bandwidth limit
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- Encrypted tunnel tests
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- Support for multiple UDP server tunnels on one destination
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- Publish medium congestion indication
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- Local domain sockets for SOCKS proxy upstream
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- Tunnel status "declined" in web console
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- SAM error reply "Incompatible crypto" if remote destination has incompatible crypto
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- Reduce amount of traffic by handling local message drops
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- Keep SSU2 socket open even if it fails to bind
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- Lower SSU2 resend traffic spikes
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- Expiration for messages in SSU2 send queue
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- Use EWMA for stream RTT estimation
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- Request choking delay if too many NACKs in stream
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- Allow 0ms latency for tunnel
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- Randomize tunnels selection for tests
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### Changed
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- Upstream SOCKS proxy from SOCKS4 to SOCKS5
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- Transit tunnels limit to 4 bytes. Default value to 10K
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- Reply CANT_REACH_PEER if connect to ourselves in SAM
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- Don't send already expired I2NP messages
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- Use monotonic timer to measure tunnel test latency
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- Standard NTCP2 frame doesn't exceed 16K
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- Always send request through tunnels in case of restricted routes
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- Don't delete connected routers from NetDb
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- Send lookup reply directly to reply tunnel gateway if possible
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- Reduce unreachable router ban interval to 8 minutes
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- Don't request banned routers / don't try to connect to unreachable router
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- Consider 'M' routers as low bandwidth
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- Limit minimal received SSU2 packet size to 40 bytes
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- Bob picks peer test session only if Charlie's address supports peer testing
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- Reject peer test msg 2 if peer testing is not supported
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- Don't request termination if SSU2 session was not established
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- Set maximum SSU2 queue size depending on RTT value
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- New streaming RTT calculation algorithm
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- Don't double initial RTO for streams when changing tunnels
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- Restore failed tunnel if test or data for inbound tunnel received
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- Don't fail last remaining tunnel in pool
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- Publish LeasetSet again if local destination was not ready or no tunnels
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- Make more attempts to pick high bandwidth hop for client tunnel
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- Reduced SSU2 session termination timeout to 165 seconds
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- Reseeds list
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### Fixed
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- ECIESx25519 symmetric key tagset early expiration
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- Encrypted LeaseSet lookup
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- Outbound tunnel build fails if it's endpoint is the same as reply tunnel gateway
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- I2PControl RouterManager returns invalid JSON when unknown params are passed
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- Mix of data between different UDP sessions on the same server
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- TARGET_OS_SIMULATOR check
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- Handling of "reservedrange" param
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- New NTCP2 session gets teminated upon termination of old one
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- New SSU2 session gets teminated upon termination of old one
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- Peer test to non-supporting router
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- Streaming ackThrough off 1 if number of NACKs exceeds 255
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- Race condition in ECIESx25519 tags table
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- Good tunnel becomes failed
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- Crash when packet comes to terminated stream
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- Stream hangs during LeaseSet update
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## [2.50.2] - 2024-01-06
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###Fixed
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- Crash with OpenSSL 3.2.0
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orignal
3 weeks ago