wsdiscover fails when wireguard vpn is running

[tom24]

Setup: ubuntu 18.04, wireguard vpn session active on udp port 51820 (wireguard default).

$ wsdiscover
Exception in thread Thread-1:
Traceback (most recent call last):   
  File "/usr/lib/python3.6/threading.py", line 916, in _bootstrap_inner
    self.run()
  File "/usr/local/lib/python3.6/dist-packages/wsdiscovery/threaded.py", line 150, in run
    self._sendPendingMessages()
  File "/usr/local/lib/python3.6/dist-packages/wsdiscovery/threaded.py", line 226, in _sendPendingMessages
    self._sendMsg(msg)
  File "/usr/local/lib/python3.6/dist-packages/wsdiscovery/threaded.py", line 213, in _sendMsg
    sock.sendto(data, (msg.getAddr(), msg.getPort()))
OSError: [Errno 126] Required key not available


Discovered:

$

Temporary fix near line 213 of threaded.py. When patched, good results are obtained even with vpn running.

        for sock in list(self._multiOutUniInSockets.values()):
            # hack to work with wireguard
            try:
                sock.sendto(data, (msg.getAddr(), msg.getPort()))
            except:
                pass
            if self._capture:

If the vpn session is stopped, then wsdiscover works without error.

[andreikop]

Fixed by #42