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Summary:ASTERISK-25739: IAX2 - No native bridge on peers when encryption=yes
Reporter:newborn (newborn838)Labels:
Date Opened:2016-02-02 01:43:45.000-0600Date Closed:2016-02-02 05:59:13.000-0600
Priority:MajorRegression?
Status:Closed/CompleteComponents:Channels/chan_iax2
Versions:Frequency of
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Description:Seems that native IAX2 transfer does not work when encryption=yes is set on peers.

Box A : Asterisk 1.8.32.3
Box B: Asterisk 11.17.1

Box A is calling box B.
Then box B transfers call back to box A.

When encryption=no is set on both peers, everything is OK
[Feb  2 10:24:17]     -- IAX2/msk02-ext-4087 answered Local/5309@dial-00000027;2
[Feb  2 10:24:17]     -- Local/5309@dial-00000027;1 answered IAX2/msk02-ext-11009
[Feb  2 10:24:17]     -- Channel 'IAX2/msk02-ext-11009' ready to transfer
[Feb  2 10:24:17]     -- Channel 'IAX2/msk02-ext-4087' ready to transfer
[Feb  2 10:24:17]     -- Releasing IAX2/msk02-ext-4087 and IAX2/msk02-ext-11009

When encryption=yes is set, transfer-release mechanism does not work.
Comments:By: Asterisk Team (asteriskteam) 2016-02-02 01:43:47.519-0600

Thanks for creating a report! The issue has entered the triage process. That means the issue will wait in this status until a Bug Marshal has an opportunity to review the issue. Once the issue has been reviewed you will receive comments regarding the next steps towards resolution.

A good first step is for you to review the [Asterisk Issue Guidelines|https://wiki.asterisk.org/wiki/display/AST/Asterisk+Issue+Guidelines] if you haven't already. The guidelines detail what is expected from an Asterisk issue report.

Then, if you are submitting a patch, please review the [Patch Contribution Process|https://wiki.asterisk.org/wiki/display/AST/Patch+Contribution+Process].
By: Joshua C. Colp (jcolp) 2016-02-02 05:59:13.851-0600

This is not a bug. When encryption is in use the media has to be decrypted and re-encrypted with the new key. IAX2 does not provide a mechanism to exchange the required keying material between both sides to allow a native transfer to occur.