[asterisk-bugs] [JIRA] (ASTERISK-28634) Invite loop within PJSIP

[Joeran Vinzens (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-28634?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=250634#comment-250634 ] 

Joeran Vinzens commented on ASTERISK-28634:
-------------------------------------------

Some further information. With Asterisk 17.3 we now have observed two crashes where the asterisk continues the invite loop for over an hour and after more than 500000 messages it seems to produce a segfault (at least in our case) within the initial LWP.

We have some backtrace and logs if you need them. We would provide these if needed via email again due to privacy concerns.

We will update our systems to 17.4 today, but since it does not seem to have been fixed (according changelog) we do not expect any changes. We will update this ticket again as soon as we see this again on current version.

> Invite loop within PJSIP
> ------------------------
>
>                 Key: ASTERISK-28634
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-28634
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_pjsip
>    Affects Versions: 17.0.0
>         Environment: Asterisk 17.0.0 with bundled PJSIP on Debian Buster
>            Reporter: Joeran Vinzens
>      Target Release: 17.1.0
>
>         Attachments: asterisk.conf, asterisk_invite_loop_other_side.pcap, invite_loop_small.pcap, pjsip.conf, rtp.conf, Screenshot from 2019-11-26 10-19-59.png, sipp_scenario.tar.xz
>
>
> Fom time to time we can see traffic increase on out Asterisk Systems. After some debugging we see the Asterisk send kind of an Invite loop over and over. Since there is no way to deny re-invites in PJSIP there is no way out of it. From asterisk perspective it sends these re-invites as fast as it can which result in an increase of 3MBit/s of signalling traffic from this maschine. So far we do not know how to reproduce the issue but we captured the scenario from our production system. (trace attached) the Asterisk log itself just tells us the Invite is going out but nothing further. There was no trigger on the other call-leg.



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