[OpenSER-Users] Rewriting the to header

shiebar at post.tau.ac.il shiebar at post.tau.ac.il
Sat Mar 15 18:07:18 CET 2008


Hi Inaki,

I have already read it but probably missed this important detail.  
Thanks for the  advice. I will read it again more carefully.

Best regards,
Shie

Quoting Iñaki Baz Castillo <ibc at aliax.net>:

> El Sábado, 15 de Marzo de 2008, shiebar at post.tau.ac.il escribió:
>> Hi Inaki,
>>
>> Then what should I do if I get the following error:
>> SIP/2.0 481 Call Leg/Transaction Does Not Exist
>>
>> When both caller and callee are online?
>
> And why do you assume that it's a fail related to the "To" header?
>
> RFC 3261
>   21.4.19   481 Call/Transaction Does Not Exist
>
>    This status indicates that the UAS received a request that does not
>    match any existing dialog or transaction.
>
>
> Also read how a UA tries to match an incoming request to an existing
> transaction:
>   http://tools.ietf.org/html/rfc3261#section-17.2.3
>
>
>
>> WeSIP receive the request with the real From uri but the To uri
>> contains the IP of openser server.
>> Is this the correct situation?
>
> Sincerely, you should read the RFC 3261 to understand that the "To" header is
> usually not examinated by the UAS, just the Request-Uri. But you cannot
> asumme something incorrect without reading about it and later ask "then
> what?".
>
> ;)
>
>
>
>
> --
> Iñaki Baz Castillo
>
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