Hi,

a recent commit on tm module (b66033d) adds a check for cancelled transactions to t_forward_nonack (cf. http://sip-router.org/tracker/index.php?do=details&task_id=468).

This made me think that the t_append_branches function, recently added to the module, needs the same kind of checks:

- before start adding the branches

- after adding the branches and before sending them out

Attached a patch to implement these checks.

If you agree I can commit it on master.

Regards,

Federico

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Daniel-Constantin Mierla
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