I'm building a system that "sits" both in the LAN and in the Wan.

My question is this:

Is there a way to check the IP address of the person I'm trying to contact?

So when a LAN user contacts a LAN user or WAN (not behind Nat) user contacts a WAN (not behind Nat) user

They will be no use of the RTP proxy?

Something like: if (contact_ip_addr != src_ip ) { ……};

Thanx

Shi Hoch