[Users] Route in INVITE

[Juha Heinanen]

Helge Waastad writes:

 > I have a UA (ekiga) which adds a Route:<OBP>;lr in INVITE
 > Is this "legal"?

i'm pretty sure that rfc3261 allows so called pre-loaded route sets in
initial requests, but for security reasons, many proxy configurations
deny them.  i too found recently that nokia phones, when configured to use
sip, add by default a route header pointing to the outbound proxy.

rather that simply rejecting initial requests with pre-loaded route
sets, it might be possible to configure the proxy to allow them, but
only if there is a single route entry that points to the proxy itself.
i haven't had time to think how this could be tested in openser.cfg.

-- juha