Here’s an extraction of the jvb.log (because i couldn’t upload files as a new users) where a session crashed:
JVB 2019-10-07 14:05:37.779 FINE: [132] org.jitsi.videobridge.xmpp.ComponentImpl.processIQRequest() (serving component 'JitsiVideobridge') Processing IQ request (packetId 5focs-197012).
JVB 2019-10-07 14:05:37.780 FINE: [132] org.jitsi.videobridge.xmpp.ComponentImpl.processIQ() (serving component 'JitsiVideobridge') Responding to IQ (packetId 5focs-197012) with: <iq to="focus@auth.meet.stagil.com/focus339710841211865" from="jitsi-videobridge.meet.stagil.com" id="5focs-197012" type="result"/>
JVB 2019-10-07 14:05:40.109 FINE: [134] org.jitsi.videobridge.xmpp.ComponentImpl.processIQ() (serving component 'JitsiVideobridge') Processing IQ (packetId W3omI-107328): <iq id="W3omI-107328" type="result" to="jitsi-videobridge.meet.stagil.com" from="meet.stagil.com"/>
JVB 2019-10-07 14:05:45.052 INFO: [18] org.jitsi.videobridge.Videobridge.log() CAT=stat create_conf,conf_id=5b5f0564191d2e47 conf_name=null,logging=false,conf_count=2,ch_count=9,v_streams=9
JVB 2019-10-07 14:05:45.062 INFO: [18] org.jitsi.videobridge.health.Health.log() Performed a successful health check in 10ms. Sticky failure: false
JVB 2019-10-07 14:05:47.779 FINE: [136] org.jitsi.videobridge.xmpp.ComponentImpl.processIQ() (serving component 'JitsiVideobridge') Processing IQ (packetId 5focs-197019): <iq type="get" to="jitsi-videobridge.meet.stagil.com" from="focus@auth.meet.stagil.com/focus339710841211865" id="5focs-197019"><healthcheck xml
ns="http://jitsi.org/protocol/healthcheck"/></iq>
JVB 2019-10-07 14:05:47.779 FINE: [136] org.jitsi.videobridge.xmpp.ComponentImpl.processIQRequest() (serving component 'JitsiVideobridge') Processing IQ request (packetId 5focs-197019).
JVB 2019-10-07 14:05:47.780 FINE: [136] org.jitsi.videobridge.xmpp.ComponentImpl.processIQ() (serving component 'JitsiVideobridge') Responding to IQ (packetId 5focs-197019) with: <iq to="focus@auth.meet.stagil.com/focus339710841211865" from="jitsi-videobridge.meet.stagil.com" id="5focs-197019" type="result"/>
JVB 2019-10-07 14:05:48.328 FINE: [159] org.jitsi.videobridge.xmpp.ComponentImpl.processIQ() (serving component 'JitsiVideobridge') Processing IQ (packetId 5focs-197023): <iq type="get" to="jitsi-videobridge.meet.stagil.com" from="focus@auth.meet.stagil.com/focus339710841211865" id="5focs-197023"><query xmlns="ht
tp://jabber.org/protocol/disco#info"/></iq>
JVB 2019-10-07 14:05:48.328 FINE: [159] org.jitsi.videobridge.xmpp.ComponentImpl.processIQRequest() (serving component 'JitsiVideobridge') Processing IQ request (packetId 5focs-197023).
JVB 2019-10-07 14:05:48.328 FINE: [159] org.jitsi.videobridge.xmpp.ComponentImpl.processIQ() (serving component 'JitsiVideobridge') Responding to IQ (packetId 5focs-197023) with: <iq type="result" id="5focs-197023" from="jitsi-videobridge.meet.stagil.com" to="focus@auth.meet.stagil.com/focus339710841211865"><quer
y xmlns="http://jabber.org/protocol/disco#info"><identity category="component" type="conference" name="JitsiVideobridge"/><feature var="http://jabber.org/protocol/disco#info"/><feature var="urn:xmpp:ping"/><feature var="jabber:iq:last"/><feature var="urn:xmpp:time"/><feature var="http://jitsi.org/protocol/colibri
"/><feature var="http://jitsi.org/protocol/healthcheck"/><feature var="urn:xmpp:jingle:apps:dtls:0"/><feature var="urn:xmpp:jingle:transports:ice-udp:1"/><feature var="urn:xmpp:jingle:transports:raw-udp:1"/><feature var="jabber:iq:version"/></query></iq>
JVB 2019-10-07 14:05:50.110 FINE: [165] org.jitsi.videobridge.xmpp.ComponentImpl.processIQ() (serving component 'JitsiVideobridge') Processing IQ (packetId W3omI-107332): <iq id="W3omI-107332" type="result" to="jitsi-videobridge.meet.stagil.com" from="meet.stagil.com"/>
JVB 2019-10-07 14:05:51.796 WARNING: [569550] org.ice4j.stack.Connector.run() Connector died: <internal_ip>:4443/tcp -> <public_ip>:64741/tcp
java.net.SocketException: Failed to receive data from socket.
at org.ice4j.socket.DelegatingSocket.receiveFromChannel(DelegatingSocket.java:686)
at org.ice4j.socket.DelegatingSocket.receive(DelegatingSocket.java:648)
at org.ice4j.socket.MultiplexingSocket.multiplexingXXXSocketSupportDoReceive(MultiplexingSocket.java:339)
at org.ice4j.socket.MultiplexingSocket.access$000(MultiplexingSocket.java:34)
at org.ice4j.socket.MultiplexingSocket$1.doReceive(MultiplexingSocket.java:77)
at org.ice4j.socket.MultiplexingXXXSocketSupport.receive(MultiplexingXXXSocketSupport.java:649)
at org.ice4j.socket.MultiplexingSocket.receive(MultiplexingSocket.java:419)
at org.ice4j.socket.MultiplexedSocket.receive(MultiplexedSocket.java:161)
at org.ice4j.socket.IceTcpSocketWrapper.receive(IceTcpSocketWrapper.java:146)
at org.ice4j.ice.harvest.AbstractTcpListener$PushBackIceSocketWrapper.receive(AbstractTcpListener.java:775)
at org.ice4j.stack.Connector.run(Connector.java:207)
at java.base/java.lang.Thread.run(Thread.java:834)
JVB 2019-10-07 14:05:51.797 WARNING: [569550] org.ice4j.stack.NetAccessManager.handleFatalError() Removing connector:ice4j.Connector@<internal_ip>:4443/tcp status: running
java.net.SocketException: Failed to receive data from socket.
at org.ice4j.socket.DelegatingSocket.receiveFromChannel(DelegatingSocket.java:686)
at org.ice4j.socket.DelegatingSocket.receive(DelegatingSocket.java:648)
at org.ice4j.socket.MultiplexingSocket.multiplexingXXXSocketSupportDoReceive(MultiplexingSocket.java:339)
at org.ice4j.socket.MultiplexingSocket.access$000(MultiplexingSocket.java:34)
at org.ice4j.socket.MultiplexingSocket$1.doReceive(MultiplexingSocket.java:77)
at org.ice4j.socket.MultiplexingXXXSocketSupport.receive(MultiplexingXXXSocketSupport.java:649)
at org.ice4j.socket.MultiplexingSocket.receive(MultiplexingSocket.java:419)
at org.ice4j.socket.MultiplexedSocket.receive(MultiplexedSocket.java:161)
at org.ice4j.socket.IceTcpSocketWrapper.receive(IceTcpSocketWrapper.java:146)
at org.ice4j.ice.harvest.AbstractTcpListener$PushBackIceSocketWrapper.receive(AbstractTcpListener.java:775)
at org.ice4j.stack.Connector.run(Connector.java:207)
at java.base/java.lang.Thread.run(Thread.java:834)
JVB 2019-10-07 14:05:52.658 INFO: [569551] org.ice4j.socket.MergingDatagramSocket.log() Failed to receive: java.net.SocketException: Failed to receive data from socket.
JVB 2019-10-07 14:05:54.764 INFO: [571574] org.jitsi.impl.neomedia.rtp.translator.RTCPFeedbackMessageSender.log() Sending a FIR to ssrc=2763706539 remainingRetries=9
JVB 2019-10-07 14:05:55.050 INFO: [569597] org.jitsi.impl.neomedia.rtp.translator.RTCPFeedbackMessageSender.log() Sending a FIR to ssrc=2763706539 remainingRetries=8
JVB 2019-10-07 14:05:55.062 INFO: [18] org.jitsi.videobridge.Videobridge.log() CAT=stat create_conf,conf_id=54e43cbfd8005ef5 conf_name=null,logging=false,conf_count=2,ch_count=9,v_streams=9
JVB 2019-10-07 14:05:55.070 INFO: [18] org.jitsi.videobridge.health.Health.log() Performed a successful health check in 8ms. Sticky failure: false
JVB 2019-10-07 14:05:55.350 INFO: [569597] org.jitsi.impl.neomedia.rtp.translator.RTCPFeedbackMessageSender.log() Sending a FIR to ssrc=2763706539 remainingRetries=7
JVB 2019-10-07 14:05:55.650 INFO: [569597] org.jitsi.impl.neomedia.rtp.translator.RTCPFeedbackMessageSender.log() Sending a FIR to ssrc=2763706539 remainingRetries=6
JVB 2019-10-07 14:05:55.944 INFO: [572752] org.ice4j.ice.ConnectivityCheckClient.log() timeout for pair: 3.122.236.158:10000/udp/srflx -> <public_ip>:63010/udp/prflx (stream.RTP), failing.
JVB 2019-10-07 14:05:55.950 INFO: [569597] org.jitsi.impl.neomedia.rtp.translator.RTCPFeedbackMessageSender.log() Sending a FIR to ssrc=2763706539 remainingRetries=5
JVB 2019-10-07 14:05:56.250 INFO: [569597] org.jitsi.impl.neomedia.rtp.translator.RTCPFeedbackMessageSender.log() Sending a FIR to ssrc=2763706539 remainingRetries=4
JVB 2019-10-07 14:05:56.550 INFO: [569597] org.jitsi.impl.neomedia.rtp.translator.RTCPFeedbackMessageSender.log() Sending a FIR to ssrc=2763706539 remainingRetries=3
JVB 2019-10-07 14:05:56.850 INFO: [569597] org.jitsi.impl.neomedia.rtp.translator.RTCPFeedbackMessageSender.log() Sending a FIR to ssrc=2763706539 remainingRetries=2
JVB 2019-10-07 14:05:57.150 INFO: [569597] org.jitsi.impl.neomedia.rtp.translator.RTCPFeedbackMessageSender.log() Sending a FIR to ssrc=2763706539 remainingRetries=1
JVB 2019-10-07 14:05:57.450 INFO: [569597] org.jitsi.impl.neomedia.rtp.translator.RTCPFeedbackMessageSender.log() Sending a FIR to ssrc=2763706539 remainingRetries=0
JVB 2019-10-07 14:05:57.780 FINE: [185] org.jitsi.videobridge.xmpp.ComponentImpl.processIQ() (serving component 'JitsiVideobridge') Processing IQ (packetId 5focs-197033): <iq type="get" to="jitsi-videobridge.meet.stagil.com" from="focus@auth.meet.stagil.com/focus339710841211865" id="5focs-197033"><healthcheck xmlns="http://jitsi.org/protocol/healthcheck"/></iq>
JVB 2019-10-07 14:05:57.780 FINE: [185] org.jitsi.videobridge.xmpp.ComponentImpl.processIQRequest() (serving component 'JitsiVideobridge') Processing IQ request (packetId 5focs-197033).
JVB 2019-10-07 14:05:57.780 FINE: [185] org.jitsi.videobridge.xmpp.ComponentImpl.processIQ() (serving component 'JitsiVideobridge') Responding to IQ (packetId 5focs-197033) with: <iq to="focus@auth.meet.stagil.com/focus339710841211865" from="jitsi-videobridge.meet.stagil.com" id="5focs-197033" type="result"/>
JVB 2019-10-07 14:05:58.944 INFO: [572752] org.ice4j.ice.ConnectivityCheckClient.log() timeout for pair: 3.122.236.158:10000/udp/srflx -> <public_ip>:63010/udp/prflx (stream.RTP), failing.
JVB 2019-10-07 14:05:59.482 INFO: [569576] net.sf.fmj.media.Log.info() net.sf.fmj.media.rtp.RTPSourceStream Total packets added: 1
JVB 2019-10-07 14:05:59.482 INFO: [569576] net.sf.fmj.media.Log.info() net.sf.fmj.media.rtp.RTPSourceStream Times reset() called: 1
JVB 2019-10-07 14:05:59.482 INFO: [569576] net.sf.fmj.media.Log.info() net.sf.fmj.media.rtp.RTPSourceStream Times grow() called: 0
JVB 2019-10-07 14:05:59.482 INFO: [569576] net.sf.fmj.media.Log.info() net.sf.fmj.media.rtp.RTPSourceStream Packets dropped because full: 0
JVB 2019-10-07 14:05:59.482 INFO: [569576] net.sf.fmj.media.Log.info() net.sf.fmj.media.rtp.RTPSourceStream Packets dropped while shrinking: 0
JVB 2019-10-07 14:05:59.482 INFO: [569576] net.sf.fmj.media.Log.info() net.sf.fmj.media.rtp.RTPSourceStream Packets dropped because they were late: 0
JVB 2019-10-07 14:05:59.482 INFO: [569576] net.sf.fmj.media.Log.info() net.sf.fmj.media.rtp.RTPSourceStream Packets dropped because they were late by more than MAX_SIZE: 0
JVB 2019-10-07 14:05:59.483 INFO: [569576] net.sf.fmj.media.Log.info() net.sf.fmj.media.rtp.RTPSourceStream Packets dropped in reset(): 0
JVB 2019-10-07 14:05:59.483 INFO: [569576] net.sf.fmj.media.Log.info() net.sf.fmj.media.rtp.RTPSourceStream Max size reached: 4
JVB 2019-10-07 14:05:59.483 INFO: [569576] net.sf.fmj.media.Log.info() net.sf.fmj.media.rtp.RTPSourceStream Adaptive jitter buffer mode was enabled
JVB 2019-10-07 14:05:59.483 INFO: [569576] net.sf.fmj.media.Log.info() Stopping RTPSourceStream.
JVB 2019-10-07 14:06:00.110 FINE: [179] org.jitsi.videobridge.xmpp.ComponentImpl.processIQ() (serving component 'JitsiVideobridge') Processing IQ (packetId W3omI-107336): <iq id="W3omI-107336" type="result" to="jitsi-videobridge.meet.stagil.com" from="meet.stagil.com"/>
JVB 2019-10-07 14:06:01.945 INFO: [572752] org.ice4j.ice.ConnectivityCheckClient.log() timeout for pair: 3.122.236.158:10000/udp/srflx -> <public_ip>:63010/udp/prflx (stream.RTP), failing.
JVB 2019-10-07 14:06:04.945 INFO: [572752] org.ice4j.ice.ConnectivityCheckClient.log() timeout for pair: 3.122.236.158:10000/udp/srflx -> <public_ip>:63010/udp/prflx (stream.RTP), failing.
JVB 2019-10-07 14:06:05.070 INFO: [18] org.jitsi.videobridge.Videobridge.log() CAT=stat create_conf,conf_id=74d4ba370ca437d5 conf_name=null,logging=false,conf_count=2,ch_count=9,v_streams=9
JVB 2019-10-07 14:06:05.081 INFO: [18] org.jitsi.videobridge.health.Health.log() Performed a successful health check in 11ms. Sticky failure: false
JVB 2019-10-07 14:06:07.779 FINE: [183] org.jitsi.videobridge.xmpp.ComponentImpl.processIQ() (serving component 'JitsiVideobridge') Processing IQ (packetId 5focs-197038): <iq type="get" to="jitsi-videobridge.meet.stagil.com" from="focus@auth.meet.stagil.com/focus339710841211865" id="5focs-197038"><healthcheck xmlns="http://jitsi.org/protocol/healthcheck"/></iq>