3 Mar
2008
3 Mar
'08
4:16 p.m.
David Loh wrote:
Hi All,
I'm facing a situation for P2P call where it need to determine both
caller and callee network type,
except for both parties having direct (internet) connection (on Public
IP), the rest of combinations will implement force_rtp_proxy.
(the 4 combinations are: NAT-> NAT, NAT -> Public IP, Public IP -> NAT,
Public IP -> Public IP).
Wondering if I can use isflagset or fetch flag from remote peer (callee)
? or is there any function that allow this to be happen ?
Usually you do it this way (pseudo code):
- configure NAT flag (e.g. flag 5).
http://www.openser.org/docs/modules/1.3.x/usrloc.html#AEN76
if (REGISTER) {
if (behind NAT)
setbflag(5)
save();
exit;
}
...call routing...
if (behind NAT)
setflag(6)
..
activate branch route
....
t_relay();
exit;
branch_route[1] {
if isflagset(6) || isbflagset(5)
force_rtpproxy();
...
do other NAT traversal stuff
...
}
regards
klaus
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