Several weeks ago I started getting an occasional problem where FS is sending an INVITE to the other side in the middle of a call, the other side does not respond and FS hangs up the leg. Below is the relevant log. The user experience is that they keep talking and hearing each other up to the very end. I have a recording of that call, so can confirm.
The call uses WebRTC and is originated by JsSip from Chrome. Then the user is put into a conference but I doubt it's relevant in this case since the INVITE and disconnect are not happening from mod_conference
I suspect it's a re-INVITE but what triggers FS to send it? I couldn't find anything in the logs that could shed light.
------------------------------------------------------------------------
INVITE sip:dj012n41@u40rf5qikah5.invalid;transport=ws;ob SIP/2.0
Via: SIP/2.0/WSS 10.97.158.232:5067;branch=z9hG4bK7Xm4tjevU45Sr
Max-Forwards: 70
From: <sip:answer-c4e14a20-fe82-11e4-95ed-22000b358f22@anonymous.invalid>;tag=KQecUSr12rSQp
To: "user1" <sip:anonymous@anonymous.invalid>;tag=v1rlqab64i
Call-ID: g8980rbrbk2t45oj5mru
CSeq: 75703945 INVITE
Contact: <sip:answer-c4e14a20-fe82-11e4-95ed-22000b358f22@##.##.###.###:5080;transport=udp>
User-Agent: FreeSWITCH-mod_sofia/1.5.15b~64bit
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE
Supported: timer, path, replaces
Session-Expires: 120;refresher=uac
Min-SE: 120
Content-Type: application/sdp
Content-Disposition: session
Content-Length: 825
v=0
o=FreeSWITCH 1432057287 1432057288 IN IP4 ##.##.##.##
s=FreeSWITCH
c=IN IP4 ##.##.##.##
t=0 0
a=msid-semantic: WMS uZEfxiWc2Dm3Mj8pRAdC8BQDwtTzC6hW
m=audio 22670 RTP/SAVPF 9 126 106
a=rtpmap:9 G722/8000
a=rtpmap:126 telephone-event/8000
a=rtpmap:106 CN/8000
a=ptime:20
a=fingerprint:sha-256 E4:E2:DD:6C:60:61:69:9D:FD:21:64:79:66:C0:14:58:DD:67:CE:29:35:35:58:65:2E:91:70:85:4C:6C:47:69
a=rtcp-mux
a=rtcp:22670 IN IP4 ##.##.##.##
a=ssrc:1029894069 cname:VL2jTPmLiyFVIEaq
a=ssrc:1029894069 msid:uZEfxiWc2Dm3Mj8pRAdC8BQDwtTzC6hW a0
a=ssrc:1029894069 mslabel:uZEfxiWc2Dm3Mj8pRAdC8BQDwtTzC6hW
a=ssrc:1029894069 label:uZEfxiWc2Dm3Mj8pRAdC8BQDwtTzC6hWa0
a=ice-ufrag:5dS3Fzx1Thrmdy9Z
a=ice-pwd:a19UHlvPK1BjvBzrFilbII2s
a=candidate:3876535948 1 udp 659136 107.20.175.160 22670 typ host generation 0
------------------------------------------------------------------------
fc1927a8-2257-400f-b4cb-67aff7297170 2015-05-20 00:00:19.376858 [DEBUG] switch_core_session.c:1061 Send signal sofia/leia_agent/anonymous@anonymous.invalid [BREAK]
fc1927a8-2257-400f-b4cb-67aff7297170 2015-05-20 00:00:19.376858 [DEBUG] sofia.c:6627 Channel sofia/leia_agent/anonymous@anonymous.invalid entering state [calling][0]
fc1927a8-2257-400f-b4cb-67aff7297170 2015-05-20 00:00:22.616874 [DEBUG] switch_core_session.c:1061 Send signal sofia/leia_agent/anonymous@anonymous.invalid [BREAK]
fc1927a8-2257-400f-b4cb-67aff7297170 2015-05-20 00:00:22.616874 [DEBUG] switch_core_session.c:1061 Send signal sofia/leia_agent/anonymous@anonymous.invalid [BREAK]
fc1927a8-2257-400f-b4cb-67aff7297170 2015-05-20 00:00:22.616874 [DEBUG] sofia.c:6627 Channel sofia/leia_agent/anonymous@anonymous.invalid entering state [terminating][503]
fc1927a8-2257-400f-b4cb-67aff7297170 2015-05-20 00:00:22.616874 [NOTICE] sofia.c:7543 Hangup sofia/leia_agent/anonymous@anonymous.invalid [CS_EXECUTE] [NORMAL_TEMPORARY_FAILURE]
fc1927a8-2257-400f-b4cb-67aff7297170 2015-05-20 00:00:22.616874 [DEBUG] switch_channel.c:3242 Send signal sofia/leia_agent/anonymous@anonymous.invalid [KILL]
fc1927a8-2257-400f-b4cb-67aff7297170 2015-05-20 00:00:22.616874 [DEBUG] switch_core_session.c:1396 Send signal sofia/leia_agent/anonymous@anonymous.invalid [BREAK]
fc1927a8-2257-400f-b4cb-67aff7297170 2015-05-20 00:00:22.636900 [DEBUG] mod_conference.c:5057 Channel leaving conference, cause: NORMAL_TEMPORARY_FAILURE
fc1927a8-2257-400f-b4cb-67aff7297170 2015-05-20 00:00:22.636900 [DEBUG] mod_conference.c:9650 sofia/leia_agent/anonymous@anonymous.invalid skip receive message [UNBRIDGE] (channel is hungup already)
fc1927a8-2257-400f-b4cb-67aff7297170 2015-05-20 00:00:22.636900 [DEBUG] switch_core_media.c:7772 sofia/leia_agent/anonymous@anonymous.invalid skip receive message [REFER_EVENT] (channel is hungup already)
fc1927a8-2257-400f-b4cb-67aff7297170 2015-05-20 00:00:22.636900 [DEBUG] switch_core_codec.c:246 sofia/leia_agent/anonymous@anonymous.invalid Restore previous codec G722:9.
fc1927a8-2257-400f-b4cb-67aff7297170 2015-05-20 00:00:22.636900 [DEBUG] switch_core_session.c:2901 sofia/leia_agent/anonymous@anonymous.invalid skip receive message [APPLICATION_EXEC_COMPLETE] (channel is hungup already)
fc1927a8-2257-400f-b4cb-67aff7297170 2015-05-20 00:00:22.636900 [DEBUG] switch_core_state_machine.c:535 (sofia/leia_agent/anonymous@anonymous.invalid) State EXECUTE going to sleep
fc1927a8-2257-400f-b4cb-67aff7297170 2015-05-20 00:00:22.636900 [DEBUG] switch_core_state_machine.c:472 (sofia/leia_agent/anonymous@anonymous.invalid) Running State Change CS_HANGUP
fc1927a8-2257-400f-b4cb-67aff7297170 2015-05-20 00:00:22.636900 [DEBUG] switch_core_state_machine.c:735 (sofia/leia_agent/anonymous@anonymous.invalid) Callstate Change ACTIVE -> HANGUP
fc1927a8-2257-400f-b4cb-67aff7297170 2015-05-20 00:00:22.636900 [DEBUG] switch_core_state_machine.c:737 (sofia/leia_agent/anonymous@anonymous.invalid) State HANGUP
fc1927a8-2257-400f-b4cb-67aff7297170 2015-05-20 00:00:22.636900 [DEBUG] mod_sofia.c:413 Channel sofia/leia_agent/anonymous@anonymous.invalid hanging up, cause: NORMAL_TEMPORARY_FAILURE
fc1927a8-2257-400f-b4cb-67aff7297170 2015-05-20 00:00:22.636900 [DEBUG] switch_core_state_machine.c:60 sofia/leia_agent/anonymous@anonymous.invalid Standard HANGUP, cause: NORMAL_TEMPORARY_FAILURE
fc1927a8-2257-400f-b4cb-67aff7297170 2015-05-20 00:00:22.636900 [DEBUG] switch_core_state_machine.c:737 (sofia/leia_agent/anonymous@anonymous.invalid) State HANGUP going to sleep