[asterisk-dev] [Code Review] Initialize udptl only when dialog negotiates for image media

[schmidts]

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Ship it!


i have tried around sending 50 faxes using t.38 and the same amount receiveing it and the changes looks solid to me. the high cpu load i have reocgnized are not related to this patch, i have the same values with and without it so go ahead ;)

- schmidts


On Jan. 16, 2012, 9:09 a.m., Matt Jordan wrote:
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> (Updated Jan. 16, 2012, 9:09 a.m.)
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> 
> Review request for Asterisk Developers, Joshua Colp, Mark Michelson, Terry Wilson, and schmidts.
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> Summary
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> Currently, the udptl object is allocated in one of three places:
> 1) create_addr_from_peer
> 2) sip_alloc
> 3) handle_request_invite
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> This typically results in any dialog associated with a peer that supports T.38 having a udptl object (and its associated UDP ports, system resources, etc.) assigned to it.  This includes non-INVITE requests.
> 
> This patch moves the initialization of a dialog's udptl object to either (a) when the media is negotiated for that dialog, or (b) if a control frame is received in chan_sip indicating that the dialog needs to support T.38.  This should result in only those dialogs that are explicitly involved with sending / receiving image media having a udptl object assigned to them.
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> This addresses bugs ASTERISK-16698 and ASTERISK-16794.
>     https://issues.asterisk.org/jira/browse/ASTERISK-16698
>     https://issues.asterisk.org/jira/browse/ASTERISK-16794
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> 
> Diffs
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>   /branches/1.8/channels/chan_sip.c 350786 
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> Diff: https://reviewboard.asterisk.org/r/1668/diff
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> Testing
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> Patch passes the udptl tests in the Asterisk Test Suite.  
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> [update] - ported the patch to Asterisk 10 and tested with the Test Suite's gateway tests.  All tests passed.
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> However, given the complexity and number of ways in which media can be negotiated, additional testing would be appreciated from the open source community.
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> 
> Thanks,
> 
> Matt
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>

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