14 Jul
2004
14 Jul
'04
9:54 a.m.
The error means that ser did receive a reply but does not know where to
forward it because it is missing a Via header field. I do not fully
understand the configuration file below (especially forwarding to
127.0.0.1), but SIP message dump would certainly help.
Jan.
On 13-07 16:52, Cyprien Simons wrote:
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();
# 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();
};
} 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;
};
}
I'm using ser 0.8.12, SuSE 9.1, Asterisk 0.9.1
I am quite new on SER, and I am trying to pursue the work of another person,
so if something in it seems stupid, don't hesitate to tell me so...
Cyprien
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