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List:       sip-implementors
Subject:    Re: [Sip-implementors] Record Route header processing for unreliable 18x response at UAC end
From:       Paul Kyzivat <pkyzivat () alum ! mit ! edu>
Date:       2011-09-09 14:12:28
Message-ID: 4E6A1ECC.5060206 () alum ! mit ! edu
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On 9/9/11 2:56 AM, Abhishek Sahu wrote:
> Hello All
> 
> I've one query regarding behavior of Record-Route. If Record-Route is present in \
> SIP unreliable 18x response and UPDATE needs to be sent prior to receiving of 2xx \
> response. So should the Route header for the UPDATE request be updated according to \
> the Record-Route of 18x response?  In this case the dialog has not been established \
> yet.

Its impossible to send an UPDATE until an [early-]dialog has been 
established.

Yes, the Record-Route needs to be used to construct the Route for the 
UPDATE message.

	Thanks,
	Paul

> INVITE with Route------------------------>
> 180 with Record Route<-----------------------------------
> UPDATE-------------------------------->
> 
> Regards
> Abhishek Sahu
> Aricent
> 
> 
> 
> 
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