Subject: RE: [Simple] SIMPLE - IM

From: [email-masked]
Date: Tue, 22 Jul 2003 12:12:43 +0300

Hi Silvi,
 
There will be two different paradigms for SIP IM: one-shot messages using MESSAGE method, and messaging sessions using MSRP as the transport protocol for messages. MSRP does not run on top of SIP but directly on top of TCP. SIP INVITE & BYE are just used to setup the messaging session (using normal SDP negotiation). The justification for the two paradigms is quite well presented in the first two chapters of the draft mentioned in your mail. 
 
SIP MESSAGE is already an RFC 3428: http://www.ietf.org/rfc/rfc3428.txt, and supported by many implementations. Messaging Sessions and MSRP are still in a draft phase, but getting quite close to be ready. This means that they should appear in the "real world" in the next few months.
 
Rgs,
    Markus 
-----Original Message-----
From: ext Silvi Kates [mailto:[email-masked]]
Sent: 22 July, 2003 11:49
To: [email-masked]'
Subject: [Simple] SIMPLE - IM

Hi,
So far on all the documents and applications of Instant message the Method for sending IM messages was
MESSAGE.
Now I came across this draft: http://www.potaroo.net/ietf/ids/draft-ietf-simple-message-sessions-01.txt
Which I found in here: http://www.potaroo.net/ietf/ids-wg-simple.html
 
That's suggests that instead of using the MESSAGE method, there are now new methods (SEND , VISIT, BIND)
Of the  MSRP (message session relay protocol) that are carried over SIP.
Is this only a suggestion, or does it really used in real life, on SIP IM applications?

Thanks
 Silvi