Fix: fixed issue with response returned to the same udp port that used to sent it, but from another port.
Fix: fixed issue with response returned to the same udp port that used to sent it, but from another port.

Because socket is connected it doesn't get the response. Fixed by binding sending socket to public port
before connecting.

newpouy/sip.js,kirm/sip.js,kyuucr/sip-websocket,voxology/sip-server