Re: [Serusers] forward_msg: no 2nd via found in reply

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@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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