5 Jun
2015
5 Jun
'15
10:11 a.m.
Hi Daniel,
I see that call-id (and other dialog identifiers) matching are controlled
by configuration but not IP:Port in via. It's hard-coded in via_matching()
called from matching_3261().
Thanks,
-volkan
On Fri, Jun 5, 2015 at 9:49 AM, Daniel-Constantin Mierla <miconda(a)gmail.com>
wrote:
Hello,
the cancel is matched based on via branch value or the other tokens in the
request (callid, cseq, ...). If you want to restrict on matching by source
ip/port, you have to do it in the configuration file.
I guess that gives you what you need by default.
Cheers,
Daniel
On 04/06/15 21:22, Volkan Hatem wrote:
Hi All,
I searched list archives and have not seen a discussion on this issue.
According to 3261, CANCEL transaction matching follows the rules listed in
section 17.2.3:
[...snip...]
1. the branch parameter in the request is equal to the one in the
top Via header field of the request that created the
transaction, and
2. the sent-by value in the top Via of the request is equal to the
one in the request that created the transaction, and
[...snip...]
However, according to RFC 6141 (which I don't think kamailio implemented
yet) suggests generating a CANCEL request (UAC) after losing contact
(section 5.5):
[...snip...]
When a UAC moves to a new contact and loses its old contact, it will
not be able to receive responses to the re-INVITE. Consequently, it
will never generate an ACK request.
Such a UAC SHOULD generate a CANCEL request to cancel the re-INVITE
and cause the INVITE client transaction corresponding to the
re-INVITE to enter the "Terminated" state. The UAC SHOULD also send
a new re-INVITE in order to make sure that both UAs have a common
view of the state of the session.
[...snip...]
My interpretation is that sent-by comparison is ruled out because
clearly IP:PORT will not match anymore.
Do you think this is the right interpretation?
Is there a plan to implement RFC 6141?
Regards,
-volkan
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Daniel-Constantin Mierlahttp://twitter.com/#!/miconda -
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