Fails to connect to ADB service after successful discovery

[JuanArton]

Doing adb -s 192.168.100.102:40179 tcpip 5555 manually work. The switch port button resulted to the following log.

08-26 11:21:25.214  3887  1201 I ADBAutoEnable: Web API: Discovering ADB port...
08-26 11:21:25.216  3887  1201 I ADBAutoEnable: Looking for mDNS service on device IP: 192.168.100.102
08-26 11:21:25.218  3887   941 I ADBAutoEnable: mDNS discovery started for _adb-tls-connect._tcp
08-26 11:21:25.260  3887   941 I ADBAutoEnable: Service found: adb-000028B44672218D-VJCxzp
08-26 11:21:25.261  3887   941 I ADBAutoEnable: Service found: adb-0000AC1794DB803E-effefL
08-26 11:21:25.263  3887   941 I ADBAutoEnable: Host: 192.168.100.102, Port: 40179
08-26 11:21:25.263  3887   941 I ADBAutoEnable: Found matching device with IP: 192.168.100.102, Port: 40179
08-26 11:21:25.264  3887   941 I ADBAutoEnable: Host: 192.168.100.15, Port: 44595
08-26 11:21:25.264  3887   941 W ADBAutoEnable: Skipping device with IP 192.168.100.15 (looking for 192.168.100.102)
08-26 11:21:25.273  3887   941 I ADBAutoEnable: Service found: adb-0000AC17944B79AB-dScTCK
08-26 11:21:25.275  3887   941 I ADBAutoEnable: Host: 192.168.100.16, Port: 36785
08-26 11:21:25.275  3887   941 W ADBAutoEnable: Skipping device with IP 192.168.100.16 (looking for 192.168.100.102)
08-26 11:21:25.307  3887   941 I ADBAutoEnable: Service found: adb-0000AC17944B79F2-oUYk0a
08-26 11:21:25.309  3887   941 I ADBAutoEnable: Host: 192.168.100.18, Port: 38005
08-26 11:21:25.309  3887   941 W ADBAutoEnable: Skipping device with IP 192.168.100.18 (looking for 192.168.100.102)
08-26 11:21:25.353  3887   941 I ADBAutoEnable: Service found: adb-0000AC1794DB7F1B-EHCfUb
08-26 11:21:25.355  3887   941 I ADBAutoEnable: Host: 192.168.100.14, Port: 40953
08-26 11:21:25.355  3887   941 W ADBAutoEnable: Skipping device with IP 192.168.100.14 (looking for 192.168.100.102)
08-26 11:21:27.586  3887   941 I ADBAutoEnable: Service found: adb-0000AC1794DB7F10-Z5vcWR
08-26 11:21:27.588  3887   941 I ADBAutoEnable: Host: 192.168.100.13, Port: 32859
08-26 11:21:27.588  3887   941 W ADBAutoEnable: Skipping device with IP 192.168.100.13 (looking for 192.168.100.102)
08-26 11:21:28.869  3887  1067 D ADBAutoEnable: handleStatus() called - checking status
08-26 11:21:28.885  3887  1067 D ADBAutoEnable: handleStatus() completed
08-26 11:21:29.723  3887   941 I ADBAutoEnable: Service found: adb-0000AC17944B7916-avfLgp
08-26 11:21:29.725  3887   941 I ADBAutoEnable: Host: 192.168.100.19, Port: 38413
08-26 11:21:29.725  3887   941 W ADBAutoEnable: Skipping device with IP 192.168.100.19 (looking for 192.168.100.102)
08-26 11:21:30.232  3887  1067 D ADBAutoEnable: handleStatus() called - checking status
08-26 11:21:30.247  3887  1067 D ADBAutoEnable: handleStatus() completed
08-26 11:21:33.869  3887  1286 D ADBAutoEnable: handleStatus() called - checking status
08-26 11:21:33.883  3887  1286 D ADBAutoEnable: handleStatus() completed
08-26 11:21:35.216  3887  1201 E ADBAutoEnable: mDNS discovery timed out after 10 seconds
08-26 11:21:35.218  3887  1201 I ADBAutoEnable: Web API: Found ADB on port 40179, switching to target port 5555...
08-26 11:21:35.218  3887  1201 I ADBAutoEnable: switchToPort: Starting with host=127.0.0.1, port=40179, targetPort=5555
08-26 11:21:35.218  3887  1201 I ADBAutoEnable: SimpleAdbManager constructor starting
08-26 11:21:35.218  3887   941 I ADBAutoEnable: Discovery stopped: _adb-tls-connect._tcp
08-26 11:21:35.219  3887  1201 I ADBAutoEnable: Key files: /data/user/0/com.tpn.adbautoenable/files/adb_key
08-26 11:21:35.219  3887  1201 I ADBAutoEnable: Loading or generating key pair
08-26 11:21:35.219  3887  1201 I ADBAutoEnable: Loading existing key pair and certificate
08-26 11:21:35.220  3887  1201 I ADBAutoEnable: Private key loaded
08-26 11:21:35.221  3887  1201 I ADBAutoEnable: Public key loaded
08-26 11:21:35.222  3887  1201 I ADBAutoEnable: Certificate loaded
08-26 11:21:35.222  3887  1201 I ADBAutoEnable: SimpleAdbManager initialized successfully
08-26 11:21:35.222  3887  1201 I ADBAutoEnable: switchToPort: Calling connect(127.0.0.1:40179)
08-26 11:21:35.279  3887  1201 E ADBAutoEnable: switchToPort: Failed to switch to port 5555
08-26 11:21:35.279  3887  1201 E ADBAutoEnable: java.io.IOException: Connection failed
08-26 11:21:35.279  3887  1201 E ADBAutoEnable: 	at io.github.muntashirakon.adb.AdbConnection.waitForConnection(AdbConnection.java:507)
08-26 11:21:35.279  3887  1201 E ADBAutoEnable: 	at io.github.muntashirakon.adb.AdbConnection.connect(AdbConnection.java:450)
08-26 11:21:35.279  3887  1201 E ADBAutoEnable: 	at io.github.muntashirakon.adb.AbsAdbConnectionManager.connect(AbsAdbConnectionManager.java:217)
08-26 11:21:35.279  3887  1201 E ADBAutoEnable: 	at com.tpn.adbautoenable.AdbHelper.switchToPort(AdbHelper.java:172)
08-26 11:21:35.279  3887  1201 E ADBAutoEnable: 	at com.tpn.adbautoenable.WebServer.lambda$handleSwitch$3$com-tpn-adbautoenable-WebServer(WebServer.java:380)
08-26 11:21:35.279  3887  1201 E ADBAutoEnable: 	at com.tpn.adbautoenable.WebServer$$ExternalSyntheticLambda1.run(D8$$SyntheticClass:0)
08-26 11:21:35.279  3887  1201 E ADBAutoEnable: 	at java.lang.Thread.run(Thread.java:1012)
08-26 11:21:35.280  3887  1201 I ADBAutoEnable: Web API: Switch failed via loopback, retrying via 192.168.100.102...
08-26 11:21:35.281  3887  1201 I ADBAutoEnable: switchToPort: Starting with host=192.168.100.102, port=40179, targetPort=5555
08-26 11:21:35.281  3887  1201 I ADBAutoEnable: SimpleAdbManager constructor starting
08-26 11:21:35.281  3887  1201 I ADBAutoEnable: Key files: /data/user/0/com.tpn.adbautoenable/files/adb_key
08-26 11:21:35.281  3887  1201 I ADBAutoEnable: Loading or generating key pair
08-26 11:21:35.281  3887  1201 I ADBAutoEnable: Loading existing key pair and certificate
08-26 11:21:35.283  3887  1201 I ADBAutoEnable: Private key loaded
08-26 11:21:35.284  3887  1201 I ADBAutoEnable: Public key loaded
08-26 11:21:35.285  3887  1201 I ADBAutoEnable: Certificate loaded
08-26 11:21:35.285  3887  1201 I ADBAutoEnable: SimpleAdbManager initialized successfully
08-26 11:21:35.285  3887  1201 I ADBAutoEnable: switchToPort: Calling connect(192.168.100.102:40179)
08-26 11:21:35.344  3887  1201 E ADBAutoEnable: switchToPort: Failed to switch to port 5555
08-26 11:21:35.344  3887  1201 E ADBAutoEnable: java.io.IOException: Connection failed
08-26 11:21:35.344  3887  1201 E ADBAutoEnable: 	at io.github.muntashirakon.adb.AdbConnection.waitForConnection(AdbConnection.java:507)
08-26 11:21:35.344  3887  1201 E ADBAutoEnable: 	at io.github.muntashirakon.adb.AdbConnection.connect(AdbConnection.java:450)
08-26 11:21:35.344  3887  1201 E ADBAutoEnable: 	at io.github.muntashirakon.adb.AbsAdbConnectionManager.connect(AbsAdbConnectionManager.java:217)
08-26 11:21:35.344  3887  1201 E ADBAutoEnable: 	at com.tpn.adbautoenable.AdbHelper.switchToPort(AdbHelper.java:172)
08-26 11:21:35.344  3887  1201 E ADBAutoEnable: 	at com.tpn.adbautoenable.WebServer.lambda$handleSwitch$3$com-tpn-adbautoenable-WebServer(WebServer.java:383)
08-26 11:21:35.344  3887  1201 E ADBAutoEnable: 	at com.tpn.adbautoenable.WebServer$$ExternalSyntheticLambda1.run(D8$$SyntheticClass:0)
08-26 11:21:35.344  3887  1201 E ADBAutoEnable: 	at java.lang.Thread.run(Thread.java:1012)
08-26 11:21:35.345  3887  1201 E ADBAutoEnable: Web API: Failed to switch to port 5555
08-26 11:21:38.967  3887  1424 D ADBAutoEnable: handleStatus() called - checking status
08-26 11:21:38.982  3887  1424 D ADBAutoEnable: handleStatus() completed
08-26 11:21:43.870  3887  1286 D ADBAutoEnable: handleStatus() called - checking status
08-26 11:21:43.884  3887  1286 D ADBAutoEnable: handleStatus() completed
08-26 11:21:48.870  3887  1286 D ADBAutoEnable: handleStatus() called - checking status
08-26 11:21:48.884  3887  1286 D ADBAutoEnable: handleStatus() completed
08-26 11:21:53.917  3887  1481 D ADBAutoEnable: handleStatus() called - checking status
08-26 11:21:53.933  3887  1481 D ADBAutoEnable: handleStatus() completed
08-26 11:21:58.903  3887  1286 D ADBAutoEnable: handleStatus() called - checking status
08-26 11:21:58.916  3887  1286 D ADBAutoEnable: handleStatus() completed
08-26 11:22:03.871  3887  1286 D ADBAutoEnable: handleStatus() called - checking status
08-26 11:22:03.884  3887  1286 D ADBAutoEnable: handleStatus() completed
08-26 11:22:08.899  3887  1755 D ADBAutoEnable: handleStatus() called - checking status
08-26 11:22:08.916  3887  1755 D ADBAutoEnable: handleStatus() completed
08-26 11:22:13.926  3887  1286 D ADBAutoEnable: handleStatus() called - checking status
08-26 11:22:13.941  3887  1286 D ADBAutoEnable: handleStatus() completed
08-26 11:22:18.870  3887  1286 D ADBAutoEnable: handleStatus() called - checking status
08-26 11:22:18.887  3887  1286 D ADBAutoEnable: handleStatus() completed
08-26 11:22:23.926  3887  2093 D ADBAutoEnable: handleStatus() called - checking status
08-26 11:22:23.945  3887  2093 D ADBAutoEnable: handleStatus() completed

[mouldybread]

The program successfully discovers the port, which means wireless debugging was enabled. It then fails to connect so I think the possibilities here are:

• The app is unpaired, in which case I would suggest you reset pairing - remembering to remove any entries from the Android settings menu.
• The connection from/to localhost is being blocked. It wouldn't be entirely weird to block this IMO as until now there was probably very little reason to connect to adb from localhost.

If you haven't already you can have a dig through this thread and see if either of the other options work for you. All approaches use more or less the same trick so if you find none of them work 100% of the time then it's likely that something is blocking the connection.

If you can confirm it either way please let me know your device and outcome and I'll make a note in the README. Thanks!