[asterisk-dev] [Code Review] sip: hangup channel on pending bye

[David Vossel]

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https://reviewboard.asterisk.org/r/823/
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Review request for Asterisk Developers.


Summary
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When the pending bye flag is used, it is possible that the dialog will terminate and leave the sip_pvt->owner channel up.  This is because we never hangup the  ast_channel after sending the SIP_BYE request.  When we receive the response for the SIP_BYE we set need_destroy which we would expect to destroy the dialog on the next do_monitor loop, but this is not the case.  The dialog will only be destroyed once the owner is hungup even with the need_destroy flag set.  This patch sets the softhangup flag on the ast_channel when a SIP_BYE request is sent as a result of the pending bye flag.


Diffs
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  /trunk/channels/chan_sip.c 280300 

Diff: https://reviewboard.asterisk.org/r/823/diff


Testing
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I tested this by generating a 200 Ok response with an SDP that Asterisk will not accept.  When this occurs asterisk will ACK the 200 ok request to the INVITE and set the pending bye flag which will immediately send a BYE request after the ACK.  I verified with this patch that the ast_channel hangs up and the dialog is immediately destroyed.


Thanks,

David