Martin Hoffmann wrote:
> Heisann,
>
> the rr module has the ability to store attributes in a Record-Route
> header and little pick them up from the Route headers. For this it uses
> a proprietary URI parameter, which is considered bad style by some. The
> outbound draft
>
> http://www.ietf.org/internet-drafts/draft-ietf-sip-outbound-15.txt
>
> suggest in section 5.1 that a edge proxy may store the flow token in the
> userpart of the URI of its Path header field value. This made me wonder
> why we don't do the very same thing for the Record-Route headers?
>
> Is there any good reason for using a URI parameter (which may be dropped
> by some stupid UA)?
No, there is no good reason (except that nobody implemented it so
far). ser.cfg carvings engraved into the rock near Ipteldorf were
discovered indicating that the stone age people used
modparam("rr", "add_username", "mammoth") to make SER work with
prehistoric SIP implementations.
This is rarely used these days so there is no reason why attributes
cannot be stored in the username part.
Jan.
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