Bugs item #1750761, was opened at 2007-07-09 23:12
Message generated for change (Comment added) made by bogdan_iancu
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Category: modules
Group: ver 1.2.x
>Status: Closed
Resolution: Fixed
Priority: 5
Private: No
Submitted By: Christian Schlatter (cschlatter)
Assigned to: Bogdan (bogdan_iancu)
Summary: 6xx response doesn't cancel forked calls

Initial Comment:
RFC 3261 defines that upon reception of a 6xx response, a proxy SHOULD cancel 
all forked dialogs and send back the 6xx as the final response to the upstream 
UA.

--- rfc 3261, section 16.7 -------
Under the new rules, upon receiving a 6xx, a proxy will issue a CANCEL request, 
which will generally result in 487 responses from all outstanding client 
transactions, and then at that point the 6xx is forwarded upstream.
----------------------------------

Some call forking experiments have shown that openser 1.2 does not follow these 
rules, instead it seems to disregard any 6xx response and continue with normal 
processing of existing forked dialogs.

E.g. if a call forks to five phones and one of them sends back a 603 Declined 
response, the other four phones continue to ring until fr_inv_timer fires and 
failure_route is called with a status of 408 Timeout. 

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>Comment By: Bogdan (bogdan_iancu)
Date: 2007-07-23 19:12

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Super!

Backports done, case closed.

Regards,
Bogdan

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Comment By: Christian Schlatter (cschlatt)
Date: 2007-07-23 19:02

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I finally found time to test the fix in SVN trunk and it works perfect
now. All active branches get canceled and the 603 gets forwarded upstream.
I think this can be backported to 1.2/1.1 now.

Thanks a lot for the fix,
Christian

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Comment By: Bogdan (bogdan_iancu)
Date: 2007-07-11 12:12

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Hi Christian,

Thanks for the report - perfectly right. I made a fix on SVN trunk and
accordingly to my tests it does its job ;). Please have it also tested and
if everything ok, I will make a backport to 1.2 and 1.1

Thanks and regards,
Bogdan

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