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124 lines
2.5 KiB
Markdown
124 lines
2.5 KiB
Markdown
# Tunnels
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Scrcpy is designed to mirror local Android devices. Tunnels allow to connect to
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a remote device (e.g. over the Internet).
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To connect to a remote device, it is possible to connect a local `adb` client to
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a remote `adb` server (provided they use the same version of the _adb_
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protocol).
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## Remote ADB server
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To connect to a remote _adb server_, make the server listen on all interfaces:
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```bash
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adb kill-server
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adb -a nodaemon server start
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# keep this open
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```
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**Warning: all communications between clients and the _adb server_ are
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unencrypted.**
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Suppose that this server is accessible at 192.168.1.2. Then, from another
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terminal, run `scrcpy`:
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```bash
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# in bash
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export ADB_SERVER_SOCKET=tcp:192.168.1.2:5037
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scrcpy --tunnel-host=192.168.1.2
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```
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```cmd
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:: in cmd
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set ADB_SERVER_SOCKET=tcp:192.168.1.2:5037
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scrcpy --tunnel-host=192.168.1.2
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```
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```powershell
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# in PowerShell
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$env:ADB_SERVER_SOCKET = 'tcp:192.168.1.2:5037'
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scrcpy --tunnel-host=192.168.1.2
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```
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By default, `scrcpy` uses the local port used for `adb forward` tunnel
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establishment (typically `27183`, see `--port`). It is also possible to force a
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different tunnel port (it may be useful in more complex situations, when more
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redirections are involved):
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```
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scrcpy --tunnel-port=1234
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```
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## SSH tunnel
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To communicate with a remote _adb server_ securely, it is preferable to use an
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SSH tunnel.
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First, make sure the _adb server_ is running on the remote computer:
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```bash
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adb start-server
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```
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Then, establish an SSH tunnel:
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```bash
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# local 5038 --> remote 5037
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# local 27183 <-- remote 27183
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ssh -CN -L5038:localhost:5037 -R27183:localhost:27183 your_remote_computer
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# keep this open
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```
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From another terminal, run `scrcpy`:
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```bash
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# in bash
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export ADB_SERVER_SOCKET=tcp:localhost:5038
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scrcpy
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```
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```cmd
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:: in cmd
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set ADB_SERVER_SOCKET=tcp:localhost:5038
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scrcpy
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```
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```powershell
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# in PowerShell
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$env:ADB_SERVER_SOCKET = 'tcp:localhost:5038'
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scrcpy
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```
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To avoid enabling remote port forwarding, you could force a forward connection
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instead (notice the `-L` instead of `-R`):
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```bash
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# local 5038 --> remote 5037
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# local 27183 --> remote 27183
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ssh -CN -L5038:localhost:5037 -L27183:localhost:27183 your_remote_computer
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# keep this open
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```
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From another terminal, run `scrcpy`:
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```bash
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# in bash
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export ADB_SERVER_SOCKET=tcp:localhost:5038
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scrcpy --force-adb-forward
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```
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```cmd
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:: in cmd
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set ADB_SERVER_SOCKET=tcp:localhost:5038
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scrcpy --force-adb-forward
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```
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```powershell
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# in PowerShell
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$env:ADB_SERVER_SOCKET = 'tcp:localhost:5038'
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scrcpy --force-adb-forward
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```
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