Subject: RE: [Sip] proxy stateless

From: [email-masked]
Date: Fri, 15 Aug 2003 15:25:29 +0530

> -----Original Message-----
> From: v l [mailto:[email-masked]]
> Sent: Thursday, August 14, 2003 1:21 AM
> To: [email-masked]
> Subject: [Sip] proxy stateless
> 
> 
> I have a question regarding stateless proxy
> processing.
> 
> If a UA sends an ill defined INVITE (say with
> Max-forwards = 0) to a stateless proxy. The 
> proxy sends a 483 Too Many Hops response back
> to the UA.
> 
> Now the UA sends a good ACK for this to the stateless
> proxy with the Request URI which is the same as
> the INVITE.
> 
> How does the stateless proxy know that this ACK is
> meant for the previous INVITE and should not be
> forwarded ahead?

I think when stateless proxy rejects requests it can
do it statefully. So that the transaction observes
the ACK and prevent forwarding of ACK.

Thanks
Arnald

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