[Serusers] SER - Config - routing loop

Sebastian Gabris Sebastian.Gabris at web.de
Fri Aug 4 14:10:01 CEST 2006


Hi everybody, i'm still new to SER and i dont fully understand my config file :)

I can make outgoing calls, but incoming calls dont get routed through. They stay in a loop at my external interface.
perhaps someone could tell where the mistake is.

Here is my config:

debug=4         # debug level (cmd line: -dddddddddd)
fork=yes
log_stderror=yes        # (cmd line: -E)

listen=10.*.*.*
listen=193.*.*.*
mhomed=yes
check_via=no    # (cmd. line: -v)
dns=no           # (cmd. line: -r)
rev_dns=no      # (cmd. line: -R)
port=5060
children=4

# ------------------ module loading ----------------------------------


loadmodule "/usr/lib/ser/modules/sl.so"
loadmodule "/usr/lib/ser/modules/tm.so"
loadmodule "/usr/lib/ser/modules/rr.so"
loadmodule "/usr/lib/ser/modules/maxfwd.so"
loadmodule "/usr/lib/ser/modules/usrloc.so"
loadmodule "/usr/lib/ser/modules/registrar.so"
loadmodule "/usr/lib/ser/modules/textops.so"
loadmodule "/usr/lib/ser/modules/nathelper.so"


modparam("usrloc", "db_mode",   0)
modparam("rr", "enable_full_lr", 1)

modparam("registrar", "nat_flag", 6)
modparam("nathelper", "natping_interval", 30) # Ping interval 30 s
modparam("nathelper", "ping_nated_only", 1)   # Ping only clients behind NAT

route{
        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;
        };
     
        if (nat_uac_test("3")) {

                if (method == "REGISTER" || ! search("^Record-Route:")) {
                    log("LOG: Someone trying to register from private IP, rewriting\n");


                    fix_nated_contact(); # Rewrite contact with source IP of signalling
                    if (method == "INVITE") {
                        fix_nated_sdp("1"); # Add direction=active to SDP
                    };
                    force_rport(); # Add rport parameter to topmost Via
                    setflag(6);    # Mark as NATed
           };
        };
        if (!method=="REGISTER") record_route();
        if (loose_route()) {
                # mark routing logic in request
                append_hf("P-hint: rr-enforced\r\n");
                route(1);
                break;
        };

        if (!uri==myself) {
                # mark routing logic in request
                append_hf("P-hint: outbound\r\n");
                route(1);
                break;
        };
                lookup("aliases");
                if (!uri==myself) {
                        append_hf("P-hint: outbound alias\r\n");
                        route(1);
                        break;
                };

        append_hf("P-hint: usrloc applied\r\n");
        route(1);
}

route[1]
{
            force_rtp_proxy("FAEI");
        t_on_reply("1");

        if (!t_relay()) {
                sl_reply_error();
        };
}

onreply_route[1] {
        fix_nated_contact();
        force_rtp_proxy("FAII");
    # otherwise, is it a transaction behind a NAT and we did not
    # know at time of request processing ? (RFC1918 contacts)
    if (nat_uac_test("1")) {
        fix_nated_contact();
    };
}


                                               
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