As an update, I've attempted to use the AVPs but they still don't appear in the t_branch_timeout() function for a missing ACK.

Daniel-Constantin did mention in a previous thread that he wasn't certain t_branch_timeout() would trigger for an ACK, as the INVITE, 200 OK Transaction completes, and the ACK is a separate transaction.

Testing indicates that t_branch_timeout() does trigger for a missing ACK, but perhaps as it's technically a separate transaction the AVPs associated with the invite are lost?

Unfortunately I'm not much of a programmer so I can't dive into the code for clues.

On Sun, Apr 24, 2016 at 4:44 PM, Marrold <kamailio@marrold.co.uk> wrote:

Hi Alex,

Thanks for the response, I will try using an avp instead.

I interpreted "message flags (or transaction flags) will works as they do now, but the branch mask will be removed (rolling back as in 0.9.x versions). These flags are transaction persistent." from https://www.kamailio.org/dokuwiki/doku.php/utils:flags to mean the flags were per transaction, however that Wiki page is a little old.

Is there some more updated documentation regarding flags I should read?

On Sun, Apr 24, 2016 at 4:20 PM, Alex Balashov <abalashov@evaristesys.com> wrote:
‎Hi,

‎Flags of this sort are unfortunately per-message; you'd want something transaction-persistent, like $avps.‎

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Original Message
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Subject: [SR-Users] Using flags in t_branch_timeout() section of failure_route{}

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