Subject: RE: [Sipping] ack request uri in Basic Call Flow Examples

From: [email-masked]
Date: Mon, 13 Oct 2003 09:48:19 +0300

Should the transport=tcp be also reflected in the request-URI?

/Hisham

> -----Original Message-----
> From: ext Alan Johnston [mailto:[email-masked]]
> Sent: Friday, October 10, 2003 7:56 PM
> To: Juha Heinanen; Srikanth Sundaragopalan
> Cc: [email-masked]
> Subject: Re: [Sipping] ack request uri in Basic Call Flow Examples
> 
> 
> At 06:31 PM 10/10/2003 +0300, Juha Heinanen wrote:
> >Srikanth Sundaragopalan writes:
> >
> >  > ACK is not sent by bob.It is sent by Alice and hence the R-URI is
> >  > perfect.
> >
> >yes, ack is sent by alice.  my typo.  however, i still think that
> >request uri in the ack is incorrect.  when alice receives ok 
> from bob to
> >her invite, remote target uri of the dialog at alice (uac) is set to
> >contact uri:
> >
> >12.1.2 UAC Behavior
> >
> >The remote target MUST be set to the URI from the Contact 
> header field
> >of the response.
> >
> >in the example this is:
> >
> >sip:[email-masked]
> >
> >now alice goes on and sends ack, which in the example has 
> this request
> >uri:
> >
> >ACK sip:[email-masked] SIP/2.0
> >
> >since there was no rr'ing proxy on the path between alice 
> and bob, route
> >set at alice is empty and this applies:
> >
> >12.2.1 UAC Behavior
> >
> >If the route set is empty, the UAC MUST place the remote 
> target URI into
> >the Request-URI.
> >
> >thus i still think that the ruri in the ack is incorrect.
> 
> Juha,
> 
> You are correct - the Request-URI for this ACK should be 
> sip:[email-masked].  I will fix this in the authors 48 
> hours.  I think the rest of the ACKs in the document have the correct 
> Request-URIs.
> 
> Thanks,
> Alan.
> 
> >-- juha
> >
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> 
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