Re: [Sip] SIP level bundeling

Brett Tate <brett@broadsoft.com> Mon, 30 May 2011 12:36 UTC

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From: Brett Tate <brett@broadsoft.com>
To: atul garg <shivalk_80@yahoo.co.in>, "sip@ietf.org" <sip@ietf.org>
Date: Mon, 30 May 2011 05:35:57 -0700
Thread-Topic: [Sip] SIP level bundeling
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Subject: Re: [Sip] SIP level bundeling
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> > 2) In case of SIP fregmanmtion, I guess as TCP does not know the
> logical intelligence of SIP message, therefore sip message can be
> fregmented at any location even in between sip header, before call is
> ..... am i correct ...
> 
> Of course. TCP is not message boundary so the receiver must buffer the
> received data until it becomes a valid SIP message (it could drop the
> connection if it takes so long as it could be an attack).

Additionally concerning stream-oriented transports, the Content-Length header value is used to locate the end of the SIP message.  See RFC 3261 section 7.5, 18.3, and 20.14.