[Kamailio-Users] ACKed dialog remains in state 3 instead of 4

catalina oancea catalina.oancea at gmail.com
Wed May 27 17:44:59 CEST 2009


Yeah ok, but this is not the issue here.

Even if I use record-routing, if I don't use the fast-matching cookie,
the problem I described still remains.



2009/5/27 Alex Balashov <abalashov at evaristesys.com>:
> Catalina,
>
> catalina oancea wrote:
>
>> From what I know the record-route header is not compulsory, and
>> dialog-matching can also be done using rfc dialog-matching instead of
>> the did parameter in record-route (modparam("dialog",
>> "dlg_match_mode", 2)). This is what I am trying to use, I don't want
>> to use the record-route header at all.
>
> It is true that you do not have to use the dialog fast-matching cookie
> parameter in the Record-Route header.
>
> However, you need the Record-Route header in order for the proxy to have
> visibility into subsequent sequential requests within the dialog, so you
> might as well use the parameter for faster matching.
>
> In other words, if you don't add Record-Route, your proxy won't see BYEs,
> re-INVITEs, etc.  See RFC 3261 20.30 (http://www.ietf.org/rfc/rfc3261.txt):
>
> 20.30 Record-Route
>
>   The Record-Route header field is inserted by proxies in a request to
>   force future requests in the dialog to be routed through the proxy.
>
>
> -- Alex
>
>
>
>
> --
> Alex Balashov
> Evariste Systems
> Web    : http://www.evaristesys.com/
> Tel    : (+1) (678) 954-0670
> Direct : (+1) (678) 954-0671
> Mobile : (+1) (678) 237-1775
>




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