[asterisk-bugs] [JIRA] (ASTERISK-24925) Crash within pjprojects(libpjnath) pj_stun_session_on_rx_pkt

[Stefan Engström (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-24925?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stefan Engström updated ASTERISK-24925:
---------------------------------------

    Attachment: wiresharksnapshotstunburst.PNG
                webrtcstundebug.pdf

I am uploading two sketches i made when trying to understand the underlying process for which the crash happend. It seems the stun-process (ice-process) behaves very weird (in my unprofessional opinion), and I don't know whose fault that is. There are at least two weird things I noticed: 
a) When we call a webrtc peer that uses chrome, that peer sends 10-100 stun requests per second from the moment it receives the SDP offer until it answers the call with OK. Perhaps not a problem, but firefox does not do this. Does that happen for anyone else?
b) When we call a webrtc peer that uses chrome and that peer sends a OK with a SDP Answer, then upon receiving the answer, asterisk (through pjprojects) sends 10-100 _identical_ stun requests within the same millisecond (to the same RTP/RTCP ports which are later used for rtp-media). (see wireshark snapshot and the other sketch). Does this happen for anyone else, or is it just my environment that's bad? I tried both version 2.2 and 2.3 but i have only tried Fedora 20 with x86_64 and only on virtual machines

I finally got the debuginfo symbols to work for pjprojects so when next crash happens im gonna upload a coredump with useful info

> Crash within pjprojects(libpjnath) pj_stun_session_on_rx_pkt
> ------------------------------------------------------------
>
>                 Key: ASTERISK-24925
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-24925
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_pjsip, pjproject/pjsip
>    Affects Versions: 13.1.0
>         Environment: pjprojects version 2.2, asterisk version 13.1.0, OS is 64 bit fedora 20.
>            Reporter: Stefan Engström
>            Assignee: Stefan Engström
>         Attachments: webrtcstundebug.pdf, wiresharksnapshotstunburst.PNG
>
>
> Not yet reproducable. The use-case is a dial to a webrtc-peer, that is a chan_sip peer with transport wss and icesupport=yes.
> Will try to debug this issue myself first, and add more data  continuously.



--
This message was sent by Atlassian JIRA
(v6.2#6252)