Thanks for your response.

I didn't precised than i'm developping a proxy server.

A proxy server needs to respond to the cancel with a ok and forward a 
clone of the cancel request to all the callees.

But i can't retrieve the callees because the cancel does not match any 
server transaction and i can't create a new one.

I want to know if a cancel request must be matched to a server 
transaction or not.

Thanks.

[EMAIL PROTECTED] a écrit :

>
> Hi David,
>
> In RFC 2543,  INVITE and CANCEL transactions were intermingled, but in 
> RFC 3261 they are separated.  When a user sends an INVITE and then a 
> CANCEL, UAS needs to send 200 for cancel and then needs
> to respond to the original INVITE request with a 487 response. 
> Rgds,
> Gururaj K.
>
>
>
> *David Cutullic <[EMAIL PROTECTED]>*
> Sent by: [EMAIL PROTECTED]
>
> 04/10/2006 02:40 PM
>
>     
> To
>     [email protected]
> cc
>     
> Subject
>     [Sip-implementors] Should a cancel generate a new server       
>  transaction ?
>
>
>
>     
>
>
>
>  
>
> Hi,
>
> When a cancel is received from the network, should it be matched with a
> new server transaction or with the server transaction of the initial
> invite request ?
>
> When i read the chapter 17 of the rfc 3261, in understand than all the
> request must create a transaction.
>
> But I use the java NIST SIP implementation that don't match the cancel
> request with a transaction. Is it an error of the implementation ?
>
> Thanks for your attention
> _______________________________________________
> Sip-implementors mailing list
> [email protected]
> https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
>
>
>
> ***********************  FSS-Unclassified   *********************** 



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