[asterisk-dev] [Code Review] 4257: chan_pjsip: Race condition between channel answer and bridge setup when using direct media

[Kevin Harwell]

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Review request for Asterisk Developers.


Bugs: ASTERISK-24563
    https://issues.asterisk.org/jira/browse/ASTERISK-24563


Repository: Asterisk


Description
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When direct media is enabled and a pjsip channel is answered a race would occur between the handling of the answer and bridge setup. Sometimes the media negotiation would take place after the native bridge was setup.  This resulted in a NULL media address, which in turn resulted in Asterisk using its address as the remote media address when sending a reinvite.  This patch makes the chan_pjsip answer handler synchronous thus alleviating the race condition (the bridge won't start setting things up until after it returns).


Diffs
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  branches/13/channels/chan_pjsip.c 429386 

Diff: https://reviewboard.asterisk.org/r/4257/diff/


Testing
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Made around 100 phones calls with and did not issue occur again.


Thanks,

Kevin Harwell

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