Crash and rejoin in the middle of conferencing or meeting

Hi there,

We use JVB 2, and separate service with jicofo and prosody, and we face couple times there is user suddenly crash in the middle of doing conference/meeting, this is painful when this user enters as creator/owner the conference and he/she leaves because of crash, he cannot control the participants,

attached below is the logs

Prosody:

 Jul 07 09:30:19 mod_bosh	info	Client tried to use sid '2550adfd-fea9-490d-a63d-6c6a515e67bf' which we don't know about
Jul 07 09:30:21 c2s564c50d5fc60	info	Client connected
Jul 07 09:30:21 c2s564c50d5fc60	info	Client disconnected: sslv3 alert certificate unknown
Jul 07 09:30:22 mod_bosh	info	Client tried to use sid '2550adfd-fea9-490d-a63d-6c6a515e67bf' which we don't know about

Jicofo:

Jul 07 16:29:20 [meet-server](https://my.papertrailapp.com/systems/meet-server/events?focus=1217090291887677453&selected=1217090291887677453) [jicofo.sh](https://my.papertrailapp.com/groups/20450892/events?focus=1217090291887677453&q=program%3Ajicofo.sh&selected=1217090291887677453) Jicofo 2020-07-07 09:29:19.978 INFO: [36] org.jitsi.protocol.xmpp.AbstractOperationSetJingle.sendAddSourceIQ().478 Notify add SSRC helloschoolwebinar@conference.meet.qiscus.com/4a305d80 SID: 3c158c35ee2ga Sources{ audio: [ssrc=2846209045 ] }@565996520 source_Groups{ }@106731787

**Jul 7 at 4:30:00 PM**

**—**

Jul 07 16:30:17 [meet-server](https://my.papertrailapp.com/systems/meet-server/events?focus=1217090530963005445&selected=1217090530963005445) [jicofo.sh](https://my.papertrailapp.com/groups/20450892/events?focus=1217090530963005445&q=program%3Ajicofo.sh&selected=1217090530963005445) Jicofo 2020-07-07 09:30:17.035 INFO: [36] org.jitsi.jicofo.ChatRoomRoleAndPresence.log() Chat room event ChatRoomMemberPresenceChangeEvent[type=MemberLeft sourceRoom=org.jitsi.impl.protocol.xmpp.ChatRoomImpl@19dec428 member=ChatMember[helloschoolwebinar@conference.meet.qiscus.com/f80f807b, jid: djkg1jjksxgvbxvo@meet.qiscus.com/aiyJr5VX]@1369038657]

Jul 07 16:30:17 [meet-server](https://my.papertrailapp.com/systems/meet-server/events?focus=1217090530963005448&selected=1217090530963005448) [jicofo.sh](https://my.papertrailapp.com/groups/20450892/events?focus=1217090530963005448&q=program%3Ajicofo.sh&selected=1217090530963005448) Jicofo 2020-07-07 09:30:17.065 INFO: [36] org.jitsi.jicofo.ChatRoomRoleAndPresence.log() Granted owner to helloschoolwebinar@conference.meet.qiscus.com/a4e38c1f

Jul 07 16:30:17 [meet-server](https://my.papertrailapp.com/systems/meet-server/events?focus=1217090530963005449&selected=1217090530963005449) [jicofo.sh](https://my.papertrailapp.com/groups/20450892/events?focus=1217090530963005449&q=program%3Ajicofo.sh&selected=1217090530963005449) Jicofo 2020-07-07 09:30:17.066 INFO: [36] org.jitsi.jicofo.JitsiMeetConferenceImpl.log() Member helloschoolwebinar@conference.meet.qiscus.com/f80f807b is leaving

Jul 07 16:30:17 [meet-server](https://my.papertrailapp.com/systems/meet-server/events?focus=1217090530963005450&selected=1217090530963005450) [jicofo.sh](https://my.papertrailapp.com/groups/20450892/events?focus=1217090530963005450&q=program%3Ajicofo.sh&selected=1217090530963005450) Jicofo 2020-07-07 09:30:17.066 INFO: [36] org.jitsi.jicofo.JitsiMeetConferenceImpl.log() Terminating: helloschoolwebinar@conference.meet.qiscus.com/f80f807b

Jul 07 16:30:17 [meet-server](https://my.papertrailapp.com/systems/meet-server/events?focus=1217090530967199744&selected=1217090530967199744) [jicofo.sh](https://my.papertrailapp.com/groups/20450892/events?focus=1217090530967199744&q=program%3Ajicofo.sh&selected=1217090530967199744) Jicofo 2020-07-07 09:30:17.066 INFO: [36] org.jitsi.protocol.xmpp.AbstractOperationSetJingle.terminateSession().620 Terminate session: helloschoolwebinar@conference.meet.qiscus.com/f80f807b

Jul 07 16:30:17 [meet-server](https://my.papertrailapp.com/systems/meet-server/events?focus=1217090530967199745&selected=1217090530967199745) [jicofo.sh](https://my.papertrailapp.com/groups/20450892/events?focus=1217090530967199745&q=program%3Ajicofo.sh&selected=1217090530967199745) Jicofo 2020-07-07 09:30:17.066 INFO: [36] org.jitsi.jicofo.JitsiMeetConferenceImpl.log() Removing helloschoolwebinar@conference.meet.qiscus.com/f80f807b sources Sources{ video: [ssrc=1053990917 ssrc=1325298732 ssrc=1916927181 ssrc=2298324978 ssrc=2681415866 ssrc=2924935730 ] audio: [ssrc=4042530485 ] }@1801766818

Jul 07 16:30:17 [meet-server](https://my.papertrailapp.com/systems/meet-server/events?focus=1217090530967199746&selected=1217090530967199746) [jicofo.sh](https://my.papertrailapp.com/groups/20450892/events?focus=1217090530967199746&q=program%3Ajicofo.sh&selected=1217090530967199746) Jicofo 2020-07-07 09:30:17.067 INFO: [36] org.jitsi.protocol.xmpp.AbstractOperationSetJingle.sendRemoveSourceIQ().581 Notify remove SSRC helloschoolwebinar@conference.meet.qiscus.com/bdab73e1 SID: aquojqjt0ulj3 Sources{ video: [ssrc=1053990917 ssrc=1325298732 ssrc=1916927181 ssrc=2298324978 ssrc=2681415866 ssrc=2924935730 ] audio: [ssrc=4042530485 ] }@1801766818 source_Groups{ video:[ SourceGroup(FID)[ ssrc=2924935730 ssrc=2681415866 ]SourceGroup(FID)[ ssrc=1916927181 ssrc=1053990917 ]SourceGroup(FID)[ ssrc=1325298732 ssrc=2298324978 ]SourceGroup(SIM)[ ssrc=2924935730 ssrc=1916927181 ssrc=1325298732 ] ] }@680248718

Jul 07 16:30:17 [meet-server](https://my.papertrailapp.com/systems/meet-server/events?focus=1217090530967199747&selected=1217090530967199747) [jicofo.sh](https://my.papertrailapp.com/groups/20450892/events?focus=1217090530967199747&q=program%3Ajicofo.sh&selected=1217090530967199747) Jicofo 2020-07-07 09:30:17.067 INFO: [36] org.jitsi.protocol.xmpp.AbstractOperationSetJingle.sendRemoveSourceIQ().581 Notify remove SSRC helloschoolwebinar@conference.meet.qiscus.com/60b8e3d4 SID: d3u3eavh085dc Sources{ video: [ssrc=1053990917 ssrc=1325298732 ssrc=1916927181 ssrc=2298324978 ssrc=2681415866 ssrc=2924935730 ] audio: [ssrc=4042530485 ] }@1801766818 source_Groups{ video:[ SourceGroup(FID)[ ssrc=2924935730 ssrc=2681415866 ]SourceGroup(FID)[ ssrc=1916927181 ssrc=1053990917 ]SourceGroup(FID)[ ssrc=1325298732 ssrc=2298324978 ]SourceGroup(SIM)[ ssrc=2924935730 ssrc=1916927181 ssrc=1325298732 ] ] }@680248718

Jul 07 16:30:17 [meet-server](https://my.papertrailapp.com/systems/meet-server/events?focus=1217090530967199748&selected=1217090530967199748) [jicofo.sh](https://my.papertrailapp.com/groups/20450892/events?focus=1217090530967199748&q=program%3Ajicofo.sh&selected=1217090530967199748) Jicofo 2020-07-07 09:30:17.067 INFO: [36] org.jitsi.protocol.xmpp.AbstractOperationSetJingle.sendRemoveSourceIQ().581 Notify remove SSRC helloschoolwebinar@conference.meet.qiscus.com/51fcdfb9 SID: atctpdv5es037 Sources{ video: [ssrc=1053990917 ssrc=1325298732 ssrc=1916927181 ssrc=2298324978 ssrc=2681415866 ssrc=2924935730 ] audio: [ssrc=4042530485 ] }@1801766818 source_Groups{ video:[ SourceGroup(FID)[ ssrc=2924935730 ssrc=2681415866 ]SourceGroup(FID)[ ssrc=1916927181 ssrc=1053990917 ]SourceGroup(FID)[ ssrc=1325298732 ssrc=2298324978 ]SourceGroup(SIM)[ ssrc=2924935730 ssrc=1916927181 ssrc=1325298732 ] ] }@680248718

Jul 07 16:30:17 [meet-server](https://my.papertrailapp.com/systems/meet-server/events?focus=1217090530967199749&selected=1217090530967199749) [jicofo.sh](https://my.papertrailapp.com/groups/20450892/events?focus=1217090530967199749&q=program%3Ajicofo.sh&selected=1217090530967199749) Jicofo 2020-07-07 09:30:17.067 INFO: [36] org.jitsi.protocol.xmpp.AbstractOperationSetJingle.sendRemoveSourceIQ().581 Notify remove SSRC helloschoolwebinar@conference.meet.qiscus.com/e826fed9 SID: eka94ngma2hjt Sources{ video: [ssrc=1053990917 ssrc=1325298732 ssrc=1916927181 ssrc=2298324978 ssrc=2681415866 ssrc=2924935730 ] audio: [ssrc=4042530485 ] }@1801766818 source_Groups{ video:[ SourceGroup(FID)[ ssrc=2924935730 ssrc=2681415866 ]SourceGroup(FID)[ ssrc=1916927181 ssrc=1053990917 ]SourceGroup(FID)[ ssrc=1325298732 ssrc=2298324978 ]SourceGroup(SIM)[ ssrc=2924935730 ssrc=1916927181 ssrc=1325298732 ] ] }@680248718

Jul 07 16:30:17 [meet-server](https://my.papertrailapp.com/systems/meet-server/events?focus=1217090530967199750&selected=1217090530967199750) [jicofo.sh](https://my.papertrailapp.com/groups/20450892/events?focus=1217090530967199750&q=program%3Ajicofo.sh&selected=1217090530967199750) Jicofo 2020-07-07 09:30:17.067 INFO: [36] org.jitsi.protocol.xmpp.AbstractOperationSetJingle.sendRemoveSourceIQ().581 Notify remove SSRC helloschoolwebinar@conference.meet.qiscus.com/43f3ccc9 SID: agop4dsj82cap Sources{ video: [ssrc=1053990917 ssrc=1325298732 ssrc=1916927181 ssrc=2298324978 ssrc=2681415866 ssrc=2924935730 ] audio: [ssrc=4042530485 ] }@1801766818 source_Groups{ video:[ SourceGroup(FID)[ ssrc=2924935730 ssrc=2681415866 ]SourceGroup(FID)[ ssrc=1916927181 ssrc=1053990917 ]SourceGroup(FID)[ ssrc=1325298732 ssrc=2298324978 ]SourceGroup(SIM)[ ssrc=2924935730 ssrc=1916927181 ssrc=1325298732 ] ] }@680248718

Jul 07 16:30:17 [meet-server](https://my.papertrailapp.com/systems/meet-server/events?focus=1217090530967199751&selected=1217090530967199751) [jicofo.sh](https://my.papertrailapp.com/groups/20450892/events?focus=1217090530967199751&q=program%3Ajicofo.sh&selected=1217090530967199751) Jicofo 2020-07-07 09:30:17.067 INFO: [36] org.jitsi.protocol.xmpp.AbstractOperationSetJingle.sendRemoveSourceIQ().581 Notify remove SSRC helloschoolwebinar@conference.meet.qiscus.com/e0fbd483 SID: 5q780hrmeles7 Sources{ video: [ssrc=1053990917 ssrc=1325298732 ssrc=1916927181 ssrc=2298324978 ssrc=2681415866 ssrc=2924935730 ] audio: [ssrc=4042530485 ] }@1801766818 source_Groups{ video:[ SourceGroup(FID)[ ssrc=2924935730 ssrc=2681415866 ]SourceGroup(FID)[ ssrc=1916927181 ssrc=1053990917 ]SourceGroup(FID)[ ssrc=1325298732 ssrc=2298324978 ]SourceGroup(SIM)[ ssrc=2924935730 ssrc=1916927181 ssrc=1325298732 ] ] }@680248718

Jul 07 16:30:17 [meet-server](https://my.papertrailapp.com/systems/meet-server/events?focus=1217090530967199752&selected=1217090530967199752) [jicofo.sh](https://my.papertrailapp.com/groups/20450892/events?focus=1217090530967199752&q=program%3Ajicofo.sh&selected=1217090530967199752) Jicofo 2020-07-07 09:30:17.067 INFO: [36] org.jitsi.protocol.xmpp.AbstractOperationSetJingle.sendRemoveSourceIQ().581 Notify remove SSRC helloschoolwebinar@conference.meet.qiscus.com/a4e38c1f SID: c6kht9cbuk52p Sources{ video: [ssrc=1053990917 ssrc=1325298732 ssrc=1916927181 ssrc=2298324978 ssrc=2681415866 ssrc=2924935730 ] audio: [ssrc=4042530485 ] }@1801766818 source_Groups{ video:[ SourceGroup(FID)[ ssrc=2924935730 ssrc=2681415866 ]SourceGroup(FID)[ ssrc=1916927181 ssrc=1053990917 ]SourceGroup(FID)[ ssrc=1325298732 ssrc=2298324978 ]SourceGroup(SIM)[ ssrc=2924935730 ssrc=1916927181 ssrc=1325298732 ] ] }@680248718

Jul 07 16:30:17 [meet-server](https://my.papertrailapp.com/systems/meet-server/events?focus=1217090530967199753&selected=1217090530967199753) [jicofo.sh](https://my.papertrailapp.com/groups/20450892/events?focus=1217090530967199753&q=program%3Ajicofo.sh&selected=1217090530967199753) Jicofo 2020-07-07 09:30:17.067 INFO: [36] org.jitsi.protocol.xmpp.AbstractOperationSetJingle.sendRemoveSourceIQ().581 Notify remove SSRC helloschoolwebinar@conference.meet.qiscus.com/f3a69f1d SID: desmj1qgikoao Sources{ video: [ssrc=1053990917 ssrc=1325298732 ssrc=1916927181 ssrc=2298324978 ssrc=2681415866 ssrc=2924935730 ] audio: [ssrc=4042530485 ] }@1801766818 source_Groups{ video:[ SourceGroup(FID)[ ssrc=2924935730 ssrc=2681415866 ]SourceGroup(FID)[ ssrc=1916927181 ssrc=1053990917 ]SourceGroup(FID)[ ssrc=1325298732 ssrc=2298324978 ]SourceGroup(SIM)[ ssrc=2924935730 ssrc=1916927181 ssrc=1325298732 ] ] }@680248718

Jul 07 16:30:17 [meet-server](https://my.papertrailapp.com/systems/meet-server/events?focus=1217090530967199754&selected=1217090530967199754) [jicofo.sh](https://my.papertrailapp.com/groups/20450892/events?focus=1217090530967199754&q=program%3Ajicofo.sh&selected=1217090530967199754) Jicofo 2020-07-07 09:30:17.068 INFO: [36] org.jitsi.protocol.xmpp.AbstractOperationSetJingle.sendRemoveSourceIQ().581 Notify remove SSRC helloschoolwebinar@conference.meet.qiscus.com/4a305d80 SID: 3c158c35ee2ga Sources{ video: [ssrc=1053990917 ssrc=1325298732 ssrc=1916927181 ssrc=2298324978 ssrc=2681415866 ssrc=2924935730 ] audio: [ssrc=4042530485 ] }@1801766818 source_Groups{ video:[ SourceGroup(FID)[ ssrc=2924935730 ssrc=2681415866 ]SourceGroup(FID)[ ssrc=1916927181 ssrc=1053990917 ]SourceGroup(FID)[ ssrc=1325298732 ssrc=2298324978 ]SourceGroup(SIM)[ ssrc=2924935730 ssrc=1916927181 ssrc=1325298732 ] ] }@680248718

Jul 07 16:30:17 [meet-server](https://my.papertrailapp.com/systems/meet-server/events?focus=1217090531860586500&selected=1217090531860586500) [jicofo.sh](https://my.papertrailapp.com/groups/20450892/events?focus=1217090531860586500&q=program%3Ajicofo.sh&selected=1217090531860586500) Jicofo 2020-07-07 09:30:17.068 INFO: [36] org.jitsi.protocol.xmpp.AbstractOperationSetJingle.sendRemoveSourceIQ().581 Notify remove SSRC helloschoolwebinar@conference.meet.qiscus.com/dcd78a5d SID: 12bf26lo0f5u0 Sources{ video: [ssrc=1053990917 ssrc=1325298732 ssrc=1916927181 ssrc=2298324978 ssrc=2681415866 ssrc=2924935730 ] audio: [ssrc=4042530485 ] }@1801766818 source_Groups{ video:[ SourceGroup(FID)[ ssrc=2924935730 ssrc=2681415866 ]SourceGroup(FID)[ ssrc=1916927181 ssrc=1053990917 ]SourceGroup(FID)[ ssrc=1325298732 ssrc=2298324978 ]SourceGroup(SIM)[ ssrc=2924935730 ssrc=1916927181 ssrc=1325298732 ] ] }@680248718

Jul 07 16:30:17 [meet-server](https://my.papertrailapp.com/systems/meet-server/events?focus=1217090531860586504&selected=1217090531860586504) [jicofo.sh](https://my.papertrailapp.com/groups/20450892/events?focus=1217090531860586504&q=program%3Ajicofo.sh&selected=1217090531860586504) Jicofo 2020-07-07 09:30:17.068 INFO: [36] org.jitsi.jicofo.JitsiMeetConferenceImpl.log() Expiring channels for: helloschoolwebinar@conference.meet.qiscus.com/f80f807b on: Bridge[jid=videobridge1.meet.qiscus.com, relayId=null, region=null]

Jul 07 16:30:17 [meet-server](https://my.papertrailapp.com/systems/meet-server/events?focus=1217090531860586508&selected=1217090531860586508) [jicofo.sh](https://my.papertrailapp.com/groups/20450892/events?focus=1217090531860586508&q=program%3Ajicofo.sh&selected=1217090531860586508) Jicofo 2020-07-07 09:30:17.069 INFO: [36] org.jitsi.jicofo.JitsiMeetConferenceImpl.log() Removed participant: true, helloschoolwebinar@conference.meet.qiscus.com/f80f807b

From the logs we assume jicofo is triggered the on member left event that makes the user:
helloschoolwebinar@conference.meet.qiscus.com/f80f807b is leaving, and this is indicator of crashing,

but not sure why suddenly she/he get this event, and the connection is good from indicator, this happens not once or twice but quite often, and also this crash only for random user other user in same room they say normal, and not happens in other rooms, so any thought will be appreciated

Thanks

Hi @damencho do you have any idea?