<div dir="ltr"><div>Please, could you help me in this issue ? After a week reading traces, no progress.<br></div><div><br></div><div>My test environment is a Firefox browser (NAT, public IP is 88.6.179.119) that offers a webrtc connection to a peer (AWS virtual server with public IP 35.159.24.246) implemented with gstreamer/libnice.</div><div><br></div><div>According to Firefox, connection is established and stable, but no data is transferred. However, according to server libnice, it fails.</div><div><br></div><div>In<u> browser side</u> Firefox shows:</div><div style="margin-left:40px"><br></div><div><table><tbody><tr><td><div style="margin-left:40px"><span style="font-family:monospace">succeeded</span><span style="font-family:monospace">true</span><span style="font-family:monospace">true</span><span style="font-family:monospace"><a href="http://88.6.179.119:53212/udp(srflx)" target="_blank">88.6.179.119:53212/udp(srflx)</a> [non-proxied]</span></div></td><td><br></td><td><br></td><td><br></td><td><span style="font-family:monospace"><a href="http://35.159.24.246:34396/udp(srflx)" target="_blank">35.159.24.246:34396/udp(srflx)</a> </span></td><td><span style="font-family:monospace">1</span></td><td><span style="font-family:monospace">7205761601893188000</span></td><td><span style="font-family:monospace">0</span></td><td><span style="font-family:monospace">0</span></td></tr></tbody></table></div><div><br></div><div>and trace shows:</div><div><br></div><div><p style="margin-left:40px"><span style="font-family:monospace">CE-PEER(PC:1585483657323328 (id=2147483652 url=<a href="https://35.159.24.246/llocer/login_invitation):default)/CAND-PAIR(/3la" target="_blank">https://35.159.24.246/llocer/login_invitation):default)/CAND-PAIR(/3la</a>): setting pair to state FROZEN: /3la|IP4:<a href="http://88.6.179.119:53212/UDP%7CIP4:35.159.24.246:34396/UDP(srflx(IP4:192.168.1.10:53212/UDP%7Cstun.freeswitch.org:3478)%7Ccandidate:7" target="_blank">88.6.179.119:53212/UDP|IP4:35.159.24.246:34396/UDP(srflx(IP4:192.168.1.10:53212/UDP|stun.freeswitch.org:3478)|candidate:7</a> 1 UDP 1677722111 35.159.24.246 34396 typ srflx raddr 172.31.37.14 rport 34396)</span></p><p style="margin-left:40px"><span style="font-family:monospace">ICE(PC:1585483657323328 (id=2147483652 url=<a href="https://35.159.24.246/llocer/login_invitation))/CAND-PAIR(/3la" target="_blank">https://35.159.24.246/llocer/login_invitation))/CAND-PAIR(/3la</a>): Pairing candidate IP4:<a href="http://88.6.179.119:53212/UDP" target="_blank">88.6.179.119:53212/UDP</a> (647f1fff):IP4:<a href="http://35.159.24.246:34396/UDP" target="_blank">35.159.24.246:34396/UDP</a> (640001ff) priority=7205761601893187583 (640001ffc8fe3fff)</span></p><p style="margin-left:40px"><span style="font-family:monospace">ICE-PEER(PC:1585483657323328 (id=2147483652 url=<a href="https://35.159.24.246/llocer/login_invitation):default)/CAND-PAIR(6RMJ" target="_blank">https://35.159.24.246/llocer/login_invitation):default)/CAND-PAIR(6RMJ</a>): setting pair to state FAILED: 6RMJ|IP4:<a href="http://192.168.1.10:53212/UDP%7CIP4:35.159.24.246:34396/UDP(host(IP4:192.168.1.10:53212/UDP)%7Ccandidate:7" target="_blank">192.168.1.10:53212/UDP|IP4:35.159.24.246:34396/UDP(host(IP4:192.168.1.10:53212/UDP)|candidate:7</a> 1 UDP 1677722111 35.159.24.246 34396 typ srflx raddr 172.31.37.14 rport 34396)</span></p><p style="margin-left:40px"><span style="font-family:monospace">ICE-PEER(PC:1585483657323328 (id=2147483652 url=<a href="https://35.159.24.246/llocer/login_invitation):default)/CAND-PAIR(/3la" target="_blank">https://35.159.24.246/llocer/login_invitation):default)/CAND-PAIR(/3la</a>): <b>setting pair to state SUCCEEDED</b>: /3la|IP4:<a href="http://88.6.179.119:53212/UDP%7CIP4:35.159.24.246:34396/UDP(srflx(IP4:192.168.1.10:53212/UDP%7Cstun.freeswitch.org:3478)%7Ccandidate:7" target="_blank">88.6.179.119:53212/UDP|IP4:35.159.24.246:34396/UDP(srflx(IP4:192.168.1.10:53212/UDP|stun.freeswitch.org:3478)|candidate:7</a> 1 UDP 1677722111 35.159.24.246 34396 typ srflx raddr 172.31.37.14 rport 34396)</span></p><p style="margin-left:40px"><span style="font-family:monospace">ICE-PEER(PC:1585483657323328 (id=2147483652 url=<a href="https://35.159.24.246/llocer/login_invitation):default)/STREAM(PC:1585483657323328" target="_blank">https://35.159.24.246/llocer/login_invitation):default)/STREAM(PC:1585483657323328</a> (id=2147483652 url=<a href="https://35.159.24.246/llocer/login_invitation" target="_blank">https://35.159.24.246/llocer/login_invitation</a>) transport-id=transport_0 - cda3051b:00889374f6e86175ef9f120144a5333b)/COMP(1)/CAND-PAIR(/3la): <b>nominated pair</b> is /3la|IP4:<a href="http://88.6.179.119:53212/UDP%7CIP4:35.159.24.246:34396/UDP(srflx(IP4:192.168.1.10:53212/UDP%7Cstun.freeswitch.org:3478)%7Ccandidate:7" target="_blank">88.6.179.119:53212/UDP|IP4:35.159.24.246:34396/UDP(srflx(IP4:192.168.1.10:53212/UDP|stun.freeswitch.org:3478)|candidate:7</a> 1 UDP 1677722111 35.159.24.246 34396 typ srflx raddr 172.31.37.14 rport 34396)</span></p><p style="margin-left:40px"><span style="font-family:monospace">ICE-PEER(PC:1585483657323328 (id=2147483652 url=<a href="https://35.159.24.246/llocer/login_invitation):default)/STREAM(PC:1585483657323328" target="_blank">https://35.159.24.246/llocer/login_invitation):default)/STREAM(PC:1585483657323328</a> (id=2147483652 url=<a href="https://35.159.24.246/llocer/login_invitation" target="_blank">https://35.159.24.246/llocer/login_invitation</a>) transport-id=transport_0 - cda3051b:00889374f6e86175ef9f120144a5333b)/COMP(1)/CAND-PAIR(/3la): cancelling all pairs but /3la|IP4:<a href="http://88.6.179.119:53212/UDP%7CIP4:35.159.24.246:34396/UDP(srflx(IP4:192.168.1.10:53212/UDP%7Cstun.freeswitch.org:3478)%7Ccandidate:7" target="_blank">88.6.179.119:53212/UDP|IP4:35.159.24.246:34396/UDP(srflx(IP4:192.168.1.10:53212/UDP|stun.freeswitch.org:3478)|candidate:7</a> 1 UDP 1677722111 35.159.24.246 34396 typ srflx raddr 172.31.37.14 rport 34396)</span></p><p style="margin-left:40px"><span style="font-family:monospace">ICE-PEER(PC:1585483657323328 (id=2147483652 url=<a href="https://35.159.24.246/llocer/login_invitation):default)/STREAM(PC:1585483657323328" target="_blank">https://35.159.24.246/llocer/login_invitation):default)/STREAM(PC:1585483657323328</a> (id=2147483652 url=<a href="https://35.159.24.246/llocer/login_invitation" target="_blank">https://35.159.24.246/llocer/login_invitation</a>) transport-id=transport_0 - cda3051b:00889374f6e86175ef9f120144a5333b)/COMP(1)/CAND-PAIR(5AS7): cancelling FROZEN/WAITING pair 5AS7|IP4:<a href="http://192.168.1.10:49607/TCP%7CIP4:35.159.24.246:43727/TCP(host(IP4:192.168.1.10:49607/TCP)" target="_blank">192.168.1.10:49607/TCP|IP4:35.159.24.246:43727/TCP(host(IP4:192.168.1.10:49607/TCP)</a> active|candidate:9 1 TCP 843055615 35.159.24.246 43727 typ srflx raddr 172.31.37.14 rport 43727 tcptype passive) because CAND-PAIR(/3la) was nominated.</span></p><p style="margin-left:40px"><span style="font-family:monospace">ICE-PEER(PC:1585483657323328 (id=2147483652 url=<a href="https://35.159.24.246/llocer/login_invitation):default)/CAND-PAIR(5AS7" target="_blank">https://35.159.24.246/llocer/login_invitation):default)/CAND-PAIR(5AS7</a>): setting pair to state CANCELLED: 5AS7|IP4:<a href="http://192.168.1.10:49607/TCP%7CIP4:35.159.24.246:43727/TCP(host(IP4:192.168.1.10:49607/TCP)" target="_blank">192.168.1.10:49607/TCP|IP4:35.159.24.246:43727/TCP(host(IP4:192.168.1.10:49607/TCP)</a> active|candidate:9 1 TCP 843055615 35.159.24.246 43727 typ srflx raddr 172.31.37.14 rport 43727 tcptype passive)</span></p><p style="margin-left:40px"><span style="font-family:monospace">ICE-PEER(PC:1585483657323328 (id=2147483652 url=<a href="https://35.159.24.246/llocer/login_invitation):default)/ICE-STREAM(PC:1585483657323328" target="_blank">https://35.159.24.246/llocer/login_invitation):default)/ICE-STREAM(PC:1585483657323328</a> (id=2147483652 url=<a href="https://35.159.24.246/llocer/login_invitation" target="_blank">https://35.159.24.246/llocer/login_invitation</a>) transport-id=transport_0 - cda3051b:00889374f6e86175ef9f120144a5333b): all active components have nominated candidate pairs</span></p><p style="margin-left:40px"><span style="font-family:monospace">ICE-PEER(PC:1585483657323328 (id=2147483652 url=<a href="https://35.159.24.246/llocer/login_invitation):default" target="_blank">https://35.159.24.246/llocer/login_invitation):default</a>): all checks completed success=1 fail=0</span></p><div style="margin-left:40px"><span style="font-family:monospace">Unrecognized attribute: 0x802b</span></div><p style="margin-left:40px"><span style="font-family:monospace">Unrecognized attribute: 0x802c</span></p><p style="margin-left:40px"><span style="font-family:monospace">Unrecognized attribute: 0x802b</span></p><p style="margin-left:40px"><span style="font-family:monospace">Unrecognized attribute: 0x802c</span></p><p style="margin-left:40px"><span style="font-family:monospace">STUN-CLIENT(6RMJ|IP4:<a href="http://192.168.1.10:53212/UDP%7CIP4:35.159.24.246:34396/UDP(host(IP4:192.168.1.10:53212/UDP)%7Ccandidate:7" target="_blank">192.168.1.10:53212/UDP|IP4:35.159.24.246:34396/UDP(host(IP4:192.168.1.10:53212/UDP)|candidate:7</a> 1 UDP 1677722111 35.159.24.246 34396 typ srflx raddr 172.31.37.14 rport 34396)): Received response; processing</span></p><p style="margin-left:40px"><span style="font-family:monospace">ICE-PEER(PC:1585483657323328 (id=2147483652 url=<a href="https://35.159.24.246/llocer/login_invitation):default)/CAND-PAIR(/3la" target="_blank">https://35.159.24.246/llocer/login_invitation):default)/CAND-PAIR(/3la</a>): setting pair to state SUCCEEDED: /3la|IP4:<a href="http://88.6.179.119:53212/UDP%7CIP4:35.159.24.246:34396/UDP(srflx(IP4:192.168.1.10:53212/UDP%7Cstun.freeswitch.org:3478)%7Ccandidate:7" target="_blank">88.6.179.119:53212/UDP|IP4:35.159.24.246:34396/UDP(srflx(IP4:192.168.1.10:53212/UDP|stun.freeswitch.org:3478)|candidate:7</a> 1 UDP 1677722111 35.159.24.246 34396 typ srflx raddr 172.31.37.14 rport 34396)</span></p><p><span style="font-family:monospace"><br></span></p><p><span style="font-family:monospace"><br></span></p><p><span style="font-family:arial,sans-serif">However, <u>in the server side</u>, libnice trace, what I see about the correct pair is only:</span></p><p style="margin-left:40px"><span style="font-family:monospace">Mar 29 11:54:41 ip-172-31-37-14 java[803]: Agent 0x7f36244fc9d0 : new pair 0x7f35fc028da0 state DISCOVERED<br>Mar 29 11:54:41 ip-172-31-37-14 java[803]: Agent 0x7f36244fc9d0 : new pair 0x7f35fc028da0 : [35.159.24.246]:33384 --> [88.6.179.119]:38189<br>Mar 29 11:54:41 ip-172-31-37-14 java[803]: Agent 0x7f36244fc9d0 : added a new peer-discovered pair with foundation of '7:1'.<br>Mar 29 11:54:41 ip-172-31-37-14 java[803]: Agent 0x7f36244fc9d0 : conncheck 0x7f36487d8a80 FAILED, 0x7f35fc028da0 DISCOVERED.<br></span></p><p><span style="font-family:monospace"><br></span></p><p><span style="font-family:monospace">Please, any hint ?</span></p><p><span style="font-family:monospace"><br></span></p><p><span style="font-family:monospace">Thanks a lot<br></span></p><p><span style="font-family:monospace"><br><br></span></p></div></div>