Don't work exchanging messages between remote candidates.

[daaaanil81]

I create the same system for my university, but I found a problem with my system. The local and remote candidates received real IPs addresses from the STUN server, but when the Local candidates sent STUN requests to the remote candidates. The remote candidate doesn't receive STUN requests from local candidates, but in local network(192.168.0.13) system works without problems. I don't know the reason why I found this problem. Help me, please. I have a small time. I started to work with GoLang last month. I think the problem is with the UDP connection, Tell me, please. Maybe I open no correctly connection.

		connectionUDP, err = net.ListenUDP("udp4", &net.UDPAddr{
			IP:   net.ParseIP("0.0.0.0"),
		})

[daaaanil81]

Could @Sean-Der help me, please?

[Sean-Der]

Hi @daaaanil81

STUN will not work in all cases. You can have some networks where filtering + mapping is address dependent. See WebRTC for the Curious to learn more about it.

To connect users in all cases you will need to run a TURN server. Or run one host not behind a NAT.