[Kamailio-Users] Loose Route / Re-Invite (brandon at cryy.com)

[Iñaki Baz Castillo]

El Miércoles, 3 de Febrero de 2010, Klaus Darilion escribió:

> > This is a re-INVITE and the UA (MY_SBC_PROXY) replies a 200 with the
> > natted Contact (as usual).
> > Then the PSTN_PROXY server creates the ACK by setting such private SIP
> > URI as RURI. This is incorrect, this RURI *MUST* be the remote target set
> > in the initial INVITE/200 (the Contact the UA received when the dialog
> > was established). This remote target cannot change within a dialog (as
> > Alex and me have explained in this thread).
> 
> rfc3261 section 12.2. says  that target refreshing is allowed.
> 
> > PSTN_PROXY is buggy.
> 
> maybe RFC 3261 is buggy :-)


My brain is buggy today XD

Yes, it seems that RFC 3261 allows remote target being changed within a 
dialog. It could be useful for mobility (I imagine a WiFi SIP phone which 
changes its IP in middle of a call so it must send a re-INVITE to indicate the 
remote endpoint about its new signalling and media address). So cool...


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