![SIPSorcery.SIP.SIPTransport.Shutdown leaves connected sockets in WAIT state (v1.5.6) · Issue #47 · sipsorcery-org/sipsorcery · GitHub SIPSorcery.SIP.SIPTransport.Shutdown leaves connected sockets in WAIT state (v1.5.6) · Issue #47 · sipsorcery-org/sipsorcery · GitHub](https://user-images.githubusercontent.com/197660/67619322-e0ab1c00-f7f1-11e9-9b0a-1eea09dd45b5.png)
SIPSorcery.SIP.SIPTransport.Shutdown leaves connected sockets in WAIT state (v1.5.6) · Issue #47 · sipsorcery-org/sipsorcery · GitHub
belle-sip-error-TCP bind() failed for ::0 port 5060: Address already in use · Issue #78 · BelledonneCommunications/flexisip · GitHub
![firewall - TCP session established even if the server isn't listening on particular port - Network Engineering Stack Exchange firewall - TCP session established even if the server isn't listening on particular port - Network Engineering Stack Exchange](https://i.stack.imgur.com/bWF7e.png)