[Juser] XMPP bandwidth consumption vs SIP/SIMPLE?

Daniel Lloyd alien_warrior27 at hotmail.com
Fri Mar 2 09:57:31 CST 2007


Why am I recieving your emails?


>From: Peter Saint-Andre <stpeter at jabber.org>
>Reply-To: Jabber end-user discussion list <juser at jabber.org>
>To: Jabber end-user discussion list <juser at jabber.org>
>Subject: Re: [Juser] XMPP bandwidth consumption vs SIP/SIMPLE?
>Date: Thu, 01 Mar 2007 12:08:21 -0700
>
>Colin Garvey wrote:
>>I’ve heard claims about XMPP instant messages consuming less bandwidth 
>>than equivalent messages sent/received by SIP/SIMPLE clients…
>>
>>
>>
>>--are these claims true?
>>
>>--if yes, can anyone provide documentation to support these claims?
>
>Here is a basic XMPP message stanza:
>
>******
>
><message from='juliet at example.com/foo' to='romeo at example.net'>
>   <body>Art thou not Romeo, and a Montague?</body>
></message>
>
>******
>
>Here is the SIMPLE equivalent:
>
>******
>
>MESSAGE sip:romeo at example.net SIP/2.0
>Via: SIP/2.0/TCP x2s.example.com;branch=z9hG4bK776sgdkse
>Max-Forwards: 70
>From: sip:juliet at example.com;tag=49583
>To: sip:romeo at example.net
>Call-ID: Hr0zny9l3 at example.com
>CSeq: 1 MESSAGE
>Content-Type: text/plain
>Content-Length: 35
>
>Art thou not Romeo, and a Montague?
>
>******
>
>It's worse for presence (which is often the most verbose part of an IM and 
>presence system). Here is a basic XMPP presence stanza:
>
>******
>
><presence from='juliet at example.com/foo' to='romeo at montague.net/bar'/>
>
>******
>
>Here is the SIMPLE equivalent:
>
>******
>
>NOTIFY sip:192.0.2.2 SIP/2.0
>Via: SIP/2.0/TCP x2s.example.com;branch=z9hG4bKna998sk
>From: <sip:juliet at example.com>;tag=gh19
>To: <sip:romeo at example.net>;tag=yt66
>Call-ID: j4s0h4vny at example.com
>Event: presence
>Subscription-State: active;expires=599
>Max-Forwards: 70
>CSeq: 157 NOTIFY
>Contact: <sip:sipgate.example.com;transport=tcp>
>Content-Type: application/pidf+xml
>Content-Length: 192
>
><?xml version='1.0' encoding='UTF-8'?>
><presence xmlns='urn:ietf:params:xml:ns:pidf'
>           entity='pres:juliet at example.com'>
>   <tuple id='foo'>
>     <status>
>       <basic>open</basic>
>     </status>
>   </tuple>
></presence>
>
>******
>
>For more examples, go here:
>
>http://www.xmpp.org/internet-drafts/draft-saintandre-xmpp-simple-09.html
>
>See also:
>
>http://www.ietf.org/internet-drafts/draft-ietf-simple-interdomain-scaling-analysis-00.txt
>
>Peter
>
>--
>Peter Saint-Andre
>XMPP Standards Foundation
>http://www.xmpp.org/xsf/people/stpeter.shtml
>
>


><< smime.p7s >>




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