[SIPForum-discussion] record route

[mjhorse]

I think so~~. Route-Record is only used in the first-round communication and make the caller and callee know the subsequent message path in the same dialog. Then what displayed in Route-Record will be copied to Route in subsequent messages.
  
 ------------------
  by mj

  
  
 ------------------ Original ------------------
  From:  "杨伟"<shyw13 at gmail.com>;
 Date:  Tue, Aug 5, 2008 10:16 PM
 To:  "franz.edler"<franz.edler at inode.at>; 
 Cc:  "discussion"<discussion at sipforum.org>; 
 Subject:  Re: [SIPForum-discussion] record route

  
 So you mean that the Record-Route header MUST be copied to the Route header without any change?

 2008/8/5, Franz Edler <franz.edler at inode.at>:  Hi,

> So in general is it true that Servers can introduces new parameters to any
> header field even though they are not in the specification.

No; not in general to any header field, but to Record-Route. Because the
content of the Record-Route header field is copied onto the Route header
field and the Route header field is only relevant for the server addressed
by the Route header field.

> All the sip entities which do not understand the parameter should ignore
> the same.

That's also not true. There are certain rules haow to handle unrecognized
headers and parameters. Be aware of Require and Proxy-Require header fields.

Franz


_______________________________________________
This is the SIP Forum discussion mailing list
TO UNSUBSCRIBE, or edit your delivery options, please visit http://sipforum.org/mailman/listinfo/discussion
Post to the list at discussion at sipforum.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sipforum.org/pipermail/discussion/attachments/20080806/7391f32b/attachment-0002.html>