12 Oct
2015
12 Oct
'15
3:25 p.m.
Hello,
the src_ip is not a local IP, so do not match it with INT_IP or EXT_IP.
The dst_ip is local ip, but the one on which the interface was received.
You can test the $fs to see what socket is going to be used for sending out.
Or set some branch flag for each interface when the registration is
processed and check that in branch route
if(is_method("REGISTER")) {
if(dst_ip==INT_IP){
setbflag(20);
}else{
setbflag(21);
}
}
then in route[NATMANGE] have conditions like:
if(src_ip==INT_IP && isflagset(20)) {
# internal to internal
} else if(src_ip==INT_IP && isflagset(21)) {
# internal to external
} else if ...
Cheers,
Daniel
On 08/10/15 11:14, kai.ohnacker(a)cbc.de wrote:
Hello community,
I work with Kamailio 4.2.0 which is placed between two networks (with
two interfaces) and RTPproxy in bridge mode.
The task from Kamailio is to handle the calls from internal networks
to internal networks only on the internal Interface without bridging.
For external networks vice versa. If the call comes from external to
internal, then the RTPproxy should work in bridge mode and vice versa.
I adapt the example with IPv4 and IPv6 routing, but this is not
working for internal to external calls and vice versa
(http://kb.asipto.com/kamailio:kamailio-mixed-ipv4-ipv6). Only
external calls and only internal calls works. I think the cause of
this behavior is the routing which I implemented to the RTPmanage part
in the Kamailio config.
The error message is given by the internal device. (call from external
to internal)
If I make a call from internal to external, the RTP stream is only in
one direction.
Internal Interface IP: 203.207.111.58
External Interface IP: 193.16.163.58
The RTPproxy config is:
CONTROL_SOCK=udp:127.0.0.1:9000
EXTRA_OPTS="-l 203.207.111.58/193.16.163.58 -d WARN:LOG_LOCAL1"
Kamailio.cfg:
#!define INT_IP 10.96.0.0/14
#!define EXT_IP 193.0.0.0/8
# RTPProxy control and singaling updates for NAT traversal
route[NATMANAGE] {
#!ifdef WITH_NAT
if (is_request()) {
if(has_totag()) {
if(check_route_param("nat=yes")) {
setbflag(FLB_NATB);
}
}
}
if (!(isflagset(FLT_NATS) || isbflagset(FLB_NATB)))
return;
# rtpproxy_manage("co");
# Start Test routing
if((src_ip==INT_IP && dst_ip==EXT_IP)){
rtpproxy_manage("cowie");
}
if((src_ip==EXT_IP && dst_ip==INT_IP)){
rtpproxy_manage("cowei");
}
if (is_request()) {
if (!has_totag()) {
if(t_is_branch_route()) {
add_rr_param(";nat=yes");
}
}
}
if (is_reply()) {
if(isbflagset(FLB_NATB)) {
if(is_first_hop())
set_contact_alias();
}
}
#!endif
return;
}
Can someone help me with the right routing? Do you need some more
debugging information?
Cheers,
Kai
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Daniel-Constantin Mierla
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