[asterisk-dev] [Code Review] 3275: res_rtp_asterisk: Fix the one way audio problems when resuming held calls with ICE

[Jonathan Rose]

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https://reviewboard.asterisk.org/r/3275/
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(Updated Feb. 28, 2014, 1:04 p.m.)


Review request for Asterisk Developers, Joshua Colp, Kevin Harwell, and Matt Jordan.


Changes
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Adds test events to the patch when building check lists

Applies mjordan's suggestions.


Bugs: ASTERISK-22911
    https://issues.asterisk.org/jira/browse/ASTERISK-22911


Repository: Asterisk


Description
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This patch provides a fix for the hold problem by doing the following:

Once an ICE session is marked as started, we start adding any new remote candidates into a separate list until we get another attempt to start the ICE session.
Once a call to start the ice session is made, instead of immediately quitting if the session is already started, we check for a difference in the two candidates lists.  If the lists are identical, we wipe out the new list and keep the old one and just quit then going on with the current ICE session. If the lists are changed, we toss the old list and adopt the new one and restart the ICE session.


Diffs (updated)
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  /branches/11/res/res_rtp_asterisk.c 409155 

Diff: https://reviewboard.asterisk.org/r/3275/diff/


Testing
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SIPML client to Asterisk to Desk Phone
SIPML calls desk phone
audio test, got two way audio
SIPML holds call
SIPML resumes call
audio test, got two way audio (previously this would cause one way audio from the SIPML client to the desk phone)


Thanks,

Jonathan Rose

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