[SIPForum-discussion] Port Number in Contact Header

[Garron, James]

Had a couple of folks point out that I forgot to provide the link that I mentioned so adding it here:

http://www.tech-invite.com/Ti-abnf.html


-----Original Message-----
From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org]On Behalf Of Garron, James
Sent: Wednesday, January 28, 2009 4:18 PM
To: Jerry Richards; discussion at sipforum.org
Subject: Re: [SIPForum-discussion] Port Number in Contact Header


The Contact header is defined in RFC3261 as providing a SIP or SIPS URI, so looking at the ABNF:

SIP-URI          =  "sip:" [ userinfo ] hostport

so we are looking at the hostport portion

hostport         =  host [ ":" port ]

so this indicates the port is optional (anything contained in [] )

Here is a link that I find very helpful in figuring these things out.  Hope this helps.

/Jim

-----Original Message-----
From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org]On Behalf Of Jerry Richards
Sent: Wednesday, January 28, 2009 10:27 AM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] Port Number in Contact Header


Hello All,

Should the port number be included in the SIP Contact header (e.g. "Contact:
<sip:1028 at 192.168.72.59:5060>")?  I noticed the examples in RFC 3261 for
Contact header do not include a port number.

Best Regards,
Jerry

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