On Wed, 4 Feb 2004 11:13:52 +0200, Dan wrote > Hi, > > From: "Peer Oliver schmidt" <[EMAIL PROTECTED]> > > > >>I have 4569 opened and forwarded/NATed to my *. I am on the same network > > >>as the * server, a friend is remote. After about a minute you loose the > > >>connection. > > > > > This is another problem and it happens for me too (known bug, which > seems to > > > be related with the re-registration which occurs at 60s). > > > > Maybe those two problems are related to each other, i.e. IAX2 tries to > > bridge the call ... (I have no idea what I am talking about) > > > > I think that the call is allways passed through the * server > if IAX(2) is used. > > BR, > Dan >
Actually, IAX(2) calls are bridged whenever they can. The server sends TXREQ to both legs of the call and the clients try to connect to each other. What came to my mind is that it might break in NAT environment... Let's see (Note: not tested in the wild, just speculations): - UA1 10.0.0.10:4569 - inside NAT - UA2 1.1.1.1:4569 - outside NAT - server 10.0.0.1:4569/2.2.2.2:4569 - accessible from both UAs UA1 and UA2 register on the server, which fills their apparent_address info the way it can see them (UA1 has private IP, UA2 is public). When a call is established and UA1 and UA2 send TXCNTs to each other, they get the peer address from the * server, so - UA1 tries to connect to 1.1.1.1:4569 which should work (NATted by the router) - UA2 tries to connect to 10.0.0.10:4569 - no go. - UA1's packet reaches UA2 (say, NATted to 2.2.2.2:50000), so UA2 sends TXACC, but (correct me if I'm wrong here) the peer address is not updated. Thus, the connection breaks as UA1 never receives the TXACC that UA2 sent. If libiax2 (and chan_iax2 - though I haven't actually looked into it too much) set the peer's address upon receipt of TXCNT, it might work (UA2 would talk to 2.2.2.2:50000 which the router would NAT back to 10.0.0.10:4569). If that's not the problem, sorry for confusing you. :) A packet dump should reveal all. What do you think? Greg _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
