[sr-dev] [tracker] Comment added: CANCEL sent shortly after '100 trying' response to INVITE does not always end the call

[sip-router]

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The following task has a new comment added:

FS#468 - CANCEL sent shortly after '100 trying' response to INVITE does not always end the call
User who did this - Daniel-Constantin Mierla (miconda)

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Thanks for troubleshooting and providing detailed report.

route[NATMANAGE] is executed from a branch_route in this case. I think the problem is that in this case the transaction is created, the branch route is executed and take a bit to complete. Cancel comes, another process handles it, marking transaction as cancelled. The forst process after execution of branch route is doing a send without checking if someone else canceled its own created transaction.

I will look soon as sources to confirm my guess and get a fix for it if proved valid.
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More information can be found at the following URL:
http://sip-router.org/tracker/index.php?do=details&task_id=468#comment1648

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