I keep having connectivity issues with Zulu and about 25 extension. The firewall is very simple with the correct ports open as Zulu works the majority of the time. I had a disruption this morning and found the following in the logfiles
[2019-05-21 08:40:06] WARNING[3938] res_http_websocket.c: Web socket closed abruptly
[2019-05-21 08:40:06] VERBOSE[15982] res_pjsip_registrar.c: Removed contact 'sip:[email protected]:37794;transport=ws' from AOR '907046' due to transport shutdown
[2019-05-21 08:40:06] VERBOSE[301] res_pjsip/pjsip_options.c: Contact 907046/sip:[email protected]:37794;transport=ws has been deleted
[2019-05-21 08:40:06] VERBOSE[7814] res_http_websocket.c: WebSocket connection from '127.0.0.1:37794' closed
[2019-05-21 08:40:08] WARNING[4005] res_http_websocket.c: Web socket closed abruptly
[2019-05-21 08:40:08] VERBOSE[6976] res_pjsip_registrar.c: Removed contact 'sip:[email protected]:37860;transport=ws' from AOR '907025' due to transport shutdown
[2019-05-21 08:40:08] VERBOSE[25073] res_pjsip/pjsip_options.c: Contact 907025/sip:[email protected]:37860;transport=ws has been deleted
[2019-05-21 08:40:08] VERBOSE[25073] res_pjsip/pjsip_configuration.c: Endpoint 907025 is now Unreachable
[2019-05-21 08:40:08] VERBOSE[7814] res_http_websocket.c: WebSocket connection from '127.0.0.1:37860' closed
[2019-05-21 08:40:13] WARNING[7850] chan_sip.c: Timeout on 1648306815-485979403-1680358389 on non-critical invite transaction.
[2019-05-21 08:40:14] VERBOSE[10264][C-00010bb8] app_dial.c: SIP/AppiaSIP-0000062e answered PJSIP/907036-0000055e
[2019-05-21 08:40:14] ERROR[6482] pjproject: icess0x7fd481d46168 ...Error sending STUN request: Network is unreachable
I also found this around the same time in my zulu error log files
2019-05-21 08:37 -05:00: TypeError: Cannot read property 'toString' of undefined
at /var/www/html/admin/modules/zulu/node/index.js:1:50459
at Object.async.forEachOf.async.eachOf (/var/www/html/admin/modules/zulu/node/node_modules/async/lib/async.js:233:13)
at BackendServer._sendEventToClientsByZuluID (/var/www/html/admin/modules/zulu/node/index.js:1:50342)
at emitTwo (events.js:126:13)
at BackendServer.emit (events.js:214:7)
at BackendServer._webSocketServerUTFMessage (/var/www/html/admin/modules/zulu/node/index.js:1:57435)
at BackendServer._webSocketServerMessage (/var/www/html/admin/modules/zulu/node/index.js:1:55842)
at WebSocketConnection._0x864f34.on._0x10751e (/var/www/html/admin/modules/zulu/node/index.js:1:55360)
at emitOne (events.js:116:13)
at WebSocketConnection.emit (events.js:211:7)
at WebSocketConnection.processFrame (/var/www/html/admin/modules/zulu/node/node_modules/websocket/lib/WebSocketConnection.js:554:26)
at /var/www/html/admin/modules/zulu/node/node_modules/websocket/lib/WebSocketConnection.js:323:40
at _combinedTickCallback (internal/process/next_tick.js:131:7)
at process._tickDomainCallback (internal/process/next_tick.js:218:9)