[asterisk-bugs] [JIRA] (ASTERISK-26490) PJSIP channel driver sometimes sends 481 Call/Transaction Does Not Exist

[Juris Breicis (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-26490?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Juris Breicis updated ASTERISK-26490:
-------------------------------------

    Attachment: extensions.conf
                asterisk_log.txt
                2_mss_smex_capture.log.pcap

Okay, requested files added. For this - I even tested a simpler scenario (pjsip.conf unchanged, new extensions.conf added as well):
1. The call is originated behind the trunk.
2. Call comes in through trunk connection.
3. In the dialplan we first Wait(3) then Send Ringing() progress then wait again 30 seconds.
4. The originator of the call hangups on ongoing connection attempt (while hearing ringing).

The included log and pcap shows two sequential calls originated under same conditions. 
First one - CANCELS correctly 
Second one - asterisk pjsip responds with: SIP/2.0 481 Call/Transaction Does Not Exist

> PJSIP channel driver sometimes sends 481 Call/Transaction Does Not Exist
> ------------------------------------------------------------------------
>
>                 Key: ASTERISK-26490
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-26490
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: pjproject/pjsip
>    Affects Versions: 13.11.2
>         Environment: Linux 4.4.19-1-pve #1 SMP x86_64 x86_64 x86_64 GNU/Linux
>            Reporter: Juris Breicis
>            Assignee: Unassigned
>            Severity: Critical
>         Attachments: 2_mss_smex_capture.log.pcap, asterisk_log.txt, extensions.conf, extensions.conf, MSS_SIP_TRACE_ISSUES.txt, pjsip.conf
>
>
> In this particular setup asterisk 13.11.2 [10.40.6.100] is connected to NSN MSS through SIP trunk [212.210.2.2:5060]. The calls are received and routed back through the same trunk. Randomly the PJSIP will reply 481 Call/Transaction Does Not Exist to the trunk's CANCEL request of ongoing call in Ringing state. And sometimes (for no apparent reason) it just processes CANCEL request as expected.
> I have attached console dump with: 
> core set debug 10 
> core set verbose 10
> pjsip set logging on
> and corresponding sections of pjsip.conf and extensions.conf
> Please note although it looks like internal network 10.X.X.X is communicating through nat with public one 212.X.X.X - the routers are configured so, that this communication happens without NAT directly machine to machine. 



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