[Users] Mediaproxy visible IPs

[Chris Roberts]

Heya,

I'm trying to understand the logic in the python side of the media proxy.
Specifically, I have a user with a public IP address that is behind NAT.
This would seem to be okay, except for this check:

        elif not caller.signedInAddress and caller.local and
address[0]==caller.visibleIP:
            self.signIn(caller, address, data)
            sender = 0
            destination = called.address
        elif not called.signedInAddress and called.local and
address[0]==called.visibleIP:
            self.signIn(called, address, data)
            sender = 1
            destination = caller.address


I don't really understand the logic of this. Reading some more source, local
is defined if the SDP header has a local media stream setting in it's m=
header, but I do not understand why this would affect this part of the peer
logic.

If I removed this local check, my mediaproxy would be able to match incoming
RTP streams from users with public IP addresses (visibleIP == public IP)
behind NAT to their RTPPeer correctly. But I need to understand the
implications of doing this, or whether there might be a better way for me to
go?

Any suggestions?

Cheers,
Chris.

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