Subject: Re: [Sipping] Stateless Proxy

From: "RamrajPrabu Balasubramanian" <[email-masked]>
Date: Tue, 22 Jul 2003 11:18:09 -0700

hi shu-lin,
            Suppose UA1 has sent a request to UA2 thro the  proxy and has 
recvd a 100 trying , it will then not retx the request since it got the 
provisional response. Now if the proxy becomes stateless and forwards the 
request to the other UA2 and the response to that gets lost, we will be in 
trouble.  the UA1 will nomore retx the request because it will be happy that 
it got the 100 trying. and according to UA2 it has already responded . so 
UA1 will be stuck if the proxy went stateless after the 100 trying.

( this problem shouldnt exists if the request is an INVITE, the response 
retx till the ACK on the UA2 side will help it ).

-ramraj

>From: "Shu-Lin CHen" <[email-masked]>
>To: <[email-masked]>
>Subject: [Sipping] Stateless Proxy
>Date: Mon, 21 Jul 2003 14:32:24 -0400
>
>
>Hi:
>It is mentioned in RFC3261 that a Stateful Proxy cannot switch to
>Stateless mode if 100 Trying was sent initially. Why should
>100 Trying prevent the proxy from switching mode?
>
>
>Thanks.
>
>shu-lin chen
>
>
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_______________________________________________
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This list is for NEW development of the application of SIP
Use [email-masked] for questions on current sip
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