[OpenSIPS-Devel] SUBSCRIBE uses RURI as target instead of To URI

[Iñaki Baz Castillo]

Hi, I've read some threads/reports about presence in OpenSER/OpenSIPS.
Some of them suggest that the presence should be done for the To URI
in the SUBSCRIBE instead of getting it from the RURI. For example:
  https://sourceforge.net/tracker/index.php?func=detail&aid=2305495&group_id=139143&atid=743020

This is incorrect. SUBSCRIBE is end to end as INVITE or MESSAGE.
REGISTER is the *only* case in which the RURI doesn't mean the target
of the action (but the To URI). When a UA creates a SUBSCRIBE request
it must follow the same rules as when it creates an INVITE, and them
include cloning the RURI and To URI..

Then, I don't know if OpenSIPS presence module inspects the RURI or
the To URI, but it should inspect the RURI.
This requieres that, in case of a separate presence server, the proxy
should route the SUBSCRIBE's to the presence server without modifying
the RURI, this is, setting $du instead of $ru.

Could you please clarify me on it? Thanks.

-- 
Iñaki Baz Castillo
<ibc at aliax.net>