Re: [Sip-implementors] Sending Mid Dialog Request to UA behind NAT

2008-08-14 Thread Ivar Lumi
Hi, Thats question i asked several times here, to be honest no 100% workable solution. So after drinking many beers the idea flashed to brain and implementation seems to work nice so far. Approach below works even if both UAs behind (different) NAT, as long as UA keep connection/flow alive ...

Re: [Sip-implementors] Sending Mid Dialog Request to UA behind NAT

2008-08-14 Thread Iñaki Baz Castillo
El Jueves, 14 de Agosto de 2008, Nenad Milidrag escribió: > Hi Arif, > > You can use rport to solve that problem. When phone with private ip > gets its public ip re-register with your public ip/port. Well, this is a phone solution (is it really used?) but it needs the phone registering against t

Re: [Sip-implementors] Sending Mid Dialog Request to UA behind NAT

2008-08-14 Thread Nenad Milidrag
-implementors@lists.cs.columbia.edu Subject: [Sip-implementors] Sending Mid Dialog Request to UA behind NAT Hi!! I am kind of lost in a scenario..where.. UAC (behind NAT) initiates a session with a UAS (Not behind NAT) through Proxy (Statefull).. Now invite goes to Proxy and then routed to UAS.. and

Re: [Sip-implementors] Sending Mid Dialog Request to UA behind NAT

2008-08-14 Thread Iñaki Baz Castillo
El Jueves, 14 de Agosto de 2008, Arif escribió: > However IF UAS wants to end the session with BYE, it will send this request > to Proxy (coz proxy had record-routed), but how shall proxy route this > request back to UAC (which is behind NAT), coz the contact address which > UAC had sent in initial

[Sip-implementors] Sending Mid Dialog Request to UA behind NAT

2008-08-14 Thread Arif
Hi!! I am kind of lost in a scenario..where.. UAC (behind NAT) initiates a session with a UAS (Not behind NAT) through Proxy (Statefull).. Now invite goes to Proxy and then routed to UAS.. and response is also relayed back to UAC as per rfc 3261 and 3581.. The UAC does not use any STUN etc. Ho