Server fails to bind to address when the gui is still running

[TheButlah]

The websocket address previously used seems to fail to bind to, when the gui is still running. This happens because by default, the OS will reject any attempts to re-bind to the socket until a somewhat long timeout. This behaviour can be disabled by the server when it creates the websocket, I believe.

Here is the stack trace:

00:57:13 [INFO] Running version 0043c30-dirty
00:57:13 [INFO] Starting the tracker server on port 6969...
00:57:18 [INFO] [VRCOSCHandler] Listening to port 9001
00:57:18 [INFO] [VRCOSCHandler] Sending to port 9000 at address /192.168.1.50
00:57:18 [INFO] [Keybinding] Currently only supported on Windows. Keybindings will be disabled.
00:57:18 [SEVERE] log4j:WARN No appenders could be found for logger (org.java_websocket.server.WebSocketServer).
00:57:18 [SEVERE] log4j:WARN Please initialize the log4j system properly.
00:57:18 [SEVERE] log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
00:57:18 [SEVERE] [WebSocket] Exception on connection null
java.net.BindException: Address already in use
        at java.base/sun.nio.ch.Net.bind0(Native Method)
        at java.base/sun.nio.ch.Net.bind(Net.java:555)
        at java.base/sun.nio.ch.ServerSocketChannelImpl.netBind(ServerSocketChannelImpl.java:337)
        at java.base/sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:294)
        at java.base/sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:89)
        at org.java_websocket.server.WebSocketServer.doSetupSelectorAndServerThread(WebSocketServer.java:567)
        at org.java_websocket.server.WebSocketServer.run(WebSocketServer.java:367)
        at java.base/java.lang.Thread.run(Thread.java:833)
00:57:19 [INFO] [TrackerServer] Handshake received from /192.168.51.34:6969
00:57:19 [INFO] [TrackerServer] Tracker 0 added with address /192.168.51.34:6969. Board type: 10, imu type: 4, firmwar
e: 0.3.2 (15), mac: 34:85:18:03:83:C0, name: udp://34:85:18:03:83:C0
00:57:20 [INFO] [TrackerServer] Sensor 0 for udp://34:85:18:03:83:C0 status: 1
00:57:20 [INFO] [TrackerServer] Added sensor 0 for udp://34:85:18:03:83:C0, type 4
00:57:20 [INFO] [TrackerServer] Sensor info for udp://192.168.51.34/0: 1

[marcozzxx810]

@TheButlah I think we can close this, thank you so much!