15 Jul
2004
15 Jul
'04
2:39 a.m.
Not sure what's your problem is but there are several things need to change.
See below.
Hi everybody,
I'm trying to use Asterisk as SUA and SER as SIP router. But
Asterisk doesn't
succeed to register the Asterisk user to SER... the standard
error output
tell me:
"ERROR: forward_msg: no 2nd via found in reply"
the SIP message looks like:
to 193.175.133.19:5060
Retransmitting #5 (no NAT):
REGISTER sip:potemkin.fokus.fraunhofer.de SIP/2.0
Via: SIP/2.0/UDP 193.175.133.19:5060;branch=z9hG4bK625558ec
From: <sip:cys@potemkin.fokus.fraunhofer.de>;tag=as238e1f29
To: <sip:cys@potemkin.fokus.fraunhofer.de>
Call-ID: 6b8b4567327b23c6643c986966334873(a)193.175.133.19
CSeq: 102 REGISTER
User-Agent: Asterisk PBX
Expires: 120
Contact: <sip:1234@193.175.133.19>
Event: registration
Content-Length: 0
and the configuration file is like:
###main routing logic
route{
# initial sanity checks -- messages with
# max_forwards==0, or excessively long requests
if (!mf_process_maxfwd_header("10")) {
sl_send_reply("483","Too Many Hops");
break;
};
if ( msg:len > max_len ) {
sl_send_reply("513", "Message too big");
break;
};
record_route();
# Do strict routing if pre-loaded route headers present
loose_route();
You are trying to detect loose route but not processing it.
You should try
if (loose_route()) {
if (!t_relay()) {
sl_reply_error();
};
break;
};
# message should be from 127.0.0.1 or
# from other listening address
if (src_ip==127.0.0.1) {
if (method=="REGISTER") {
save("location");
break;
};
if (uri == myself) {
# native SIP destinations are handled
using our USRLOC
DB
if (!lookup("location")) {
sl_send_reply("404", "Not Found");
break;
};
};
# forward to current uri now
if (!t_relay()) {
sl_reply_error();
};
Try to put a break after t_relay() if you do not need additional processing
of the message.
} else if (src_ip == myself) {
# this is a request from local domain
# but not from 127.0.0.1, must be from UA
if (method=="REGISTER") {
# register message, save it and forward to
# security server
save("location");
forward (127.0.0.1, 4050);
break;
};
forward (127.0.0.1, 4050);
break;
};
}
It's strange to me that you are saving the UA location in ser but not doing
anything with it. If you want * to do all sip logic, there is no need to
save the UA location here. If not, your logic here seems problematic to me.
One thing that I recommend but not essential is not to use 127.0.0.1 or
localhost even both ser and * (or sems) are running on the same machine.
Even a small mistake in routing logic could end up UA or proxy sending
replies to themselves.
Zeus