On Tue, Mar 23, 2010 at 2:07 PM, Saúl Ibarra <[email protected]> wrote:
> Hi,
>
> Im' currently implementing SIP URI discovery using Bonjour (mDNS-SD)
> as per draft http://tools.ietf.org/html/draft-lee-sip-dns-sd-uri-03
>
> What I'm publishing to bonjour is a contact address in the form
> sip:[email protected]:78878 which is a randomly generated string
> plus IP and random port.
>
> There is no AoR, as this is a local contact address.
>
> When building an INVITEo other type or request, should we specify the
> port in the From/To headers? Imagine a MESSAGE request, if we don't
> specify the port in the From header, how would the recipient know
> where to send us a new MESSAGE after? This same applies to the
> transport parameter.
>
> So, does this header look right? From: "test"
> <sip:[email protected]:5844;transport=tcp>
>
> According to the SIP grammar it is, but I'd like to hear some thoughts on it.

The usage of the URI from these fields is done for backwards
compatibility with RFC2543.
-- 
Victor Pascual Ávila

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