[asterisk-dev] [Code Review] 3657: when using FEC, asterisk considers negative sequence numbers as missing

[wdoekes]

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You may want to attach an actual diff to this review, so we have something to look at ;)

- wdoekes


On June 20, 2014, 7:48 a.m., Torrey Searle wrote:
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> (Updated June 20, 2014, 7:48 a.m.)
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> Review request for Asterisk Developers.
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> Bugs: ASTERISK-23908
>     https://issues.asterisk.org/jira/browse/ASTERISK-23908
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> Repository: Asterisk
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> Description
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> When using FEC error correction with span=3 and entries=4 asterisk will try to repair in packet with sequence number 5 because it will see that packet -4 is missing. The result is that Asterisk will forward garbage packets that can possibly kill the fax.
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> This patch adds a check to see if the sequence number is valid before checking if the packet is missing
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> Diffs
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> Diff: https://reviewboard.asterisk.org/r/3657/diff/
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> Testing
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> Replayed the T.38 FEC callflow using a version of SIPP patched to understand m=image for pcapplay
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> Thanks,
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> Torrey Searle
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