Adb reverse commands not working

[dhoomakethu]

Setting up reverse proxy on an android emulator running inside docker is not working. I keep getting
error: more than one device/emulator error .

I am using run.sh to start the container. Here is the command I use to setup reverse proxy

$ adb devices
List of devices attached
localhost:5555	device

$ adb reverse tcp:50051 tcp:50051
error: more than one device/emulator

$ adb -s localhost:5555 reverse tcp:50051 tcp:50051
error: more than one device/emulator

[qmfrederik]

I'm seeing this on Android 8 and earlier, but not on 9 & 10.

May be related to Genymobile/scrcpy#5 (comment) and https://android-review.googlesource.com/c/platform/system/core/+/664644

[qmfrederik]

https://issuetracker.google.com/issues/37066218 (via https://www.genymotion.com/blog/open-source-project-scrcpy-now-works-wirelessly/) pretty much confirms it; there's a bug in adbd (running on the device side) which will cause adb reverse to fail if the device is connected over TCP (e.g. adb connect/what you do with the emulator).

This is fixed in Android P.