[OpenSER-Users] help with outbound proxy

[Dawid Jarosławski]

I've found that there was a similar problem to mine here: 
http://www.nabble.com/openser-as-proxy-relay-t4384188.html. Here is my 
openser.cfg:

# ----------- global configuration parameters ------------------------

debug=3            # debug level (cmd line: -dddddddddd)
fork=yes
log_stderror=no    # (cmd line: -E)
children=4
sip_warning=yes
log_facility=LOG_LOCAL7
disable_dns_blacklist=true

dns=no
rev_dns=no


port=5060

#set module path
mpath="/usr/local/lib/openser/modules/"

loadmodule "mysql.so"
loadmodule "sl.so"
loadmodule "tm.so"
loadmodule "rr.so"
loadmodule "maxfwd.so"
loadmodule "usrloc.so"
loadmodule "registrar.so"
loadmodule "auth.so"
loadmodule "auth_db.so"
loadmodule "uri.so"
loadmodule "uri_db.so"
loadmodule "nathelper.so"
loadmodule "textops.so"
loadmodule "mi_fifo.so"

#modparam("auth_db|uri_db|usrloc", "db_url", 
"mysql://ser:heslo@localhost/ser")
#modparam("auth_db", "calculate_ha1", 1)
#modparam("auth_db", "password_column", "password")

modparam("nathelper", "natping_interval", 30)
modparam("nathelper", "ping_nated_only", 1)  
modparam("nathelper", "rtpproxy_sock", "unix:/var/run/rtpproxy.sock")

modparam("usrloc", "db_mode", 0)

modparam("usrloc", "nat_bflag", 6)

modparam("rr", "enable_full_lr", 1)

modparam("mi_fifo", "fifo_name", "/tmp/openser_fifo")

route {

    # -----------------------------------------------------------------
    # Sanity Check Section
    # -----------------------------------------------------------------
    if (!mf_process_maxfwd_header("10")) {
        sl_send_reply("483", "Too Many Hops");
        exit;
    };

    if (msg:len > max_len) {
        sl_send_reply("513", "Message Overflow");
        exit;
    };

    # -----------------------------------------------------------------
    # Record Route Section
    # -----------------------------------------------------------------
    if (method!="REGISTER") {
        record_route();
    };

    if (method=="BYE" || method=="CANCEL") {
        unforce_rtp_proxy();
    }

    # -----------------------------------------------------------------
    # Loose Route Section
    # -----------------------------------------------------------------
    if (loose_route()) {

        if ((method=="INVITE" || method=="REFER") && !has_totag()) {
            sl_send_reply("403", "Forbidden");
            exit;
        };

        if (method=="INVITE") {

            if (nat_uac_test("19")) {
                setflag(6);
                force_rport();
                fix_nated_contact();
            };
            force_rtp_proxy("l");
        };
        route(1);
        exit;
    };

    # -----------------------------------------------------------------
    # Call Type Processing Section
    # -----------------------------------------------------------------
    if (uri!=myself) {
        route(4);
        route(1);
        exit;
    };

    if (method=="ACK") {
        route(1);
        exit;
    } else if (method=="CANCEL") {
        route(1);
        exit;
    } else if (method=="INVITE") {
        route(3);
        exit;
    } else  if (method=="REGISTER") {
        route(2);
        exit;
    };

    lookup("aliases");
    if (uri!=myself) {
        route(4);
        route(1);
        exit;
    };

    if (!lookup("location")) {
        sl_send_reply("404", "User Not Found");
        exit;
    };

    route(1);
}

route[1] {

    # -----------------------------------------------------------------
    # Default Message Handler
    # -----------------------------------------------------------------

    t_on_reply("1");

    if (!t_relay()) {
        if (method=="INVITE" && isflagset(6)) {
            unforce_rtp_proxy();
        };
        sl_reply_error();
    };
}

route[2] {

    # -----------------------------------------------------------------
    # REGISTER Message Handler
    # ----------------------------------------------------------------

    if (!search("^Contact:[ ]*\*") && nat_uac_test("19")) {
        setflag(6);
        fix_nated_contact();
        force_rport();
    };

    sl_send_reply("100", "Trying");
    route(1);

    if (!save("location")) {
        sl_reply_error();
    };
}

route[3] {

    # -----------------------------------------------------------------
    # INVITE Message Handler
    # -----------------------------------------------------------------
    if (nat_uac_test("19")) {
        setflag(6);
    }

    lookup("aliases");
    if (uri!=myself) {
        route(4);
        route(1);
        exit;
    };

    if (!lookup("location")) {
        sl_send_reply("404", "User Not Found");
        exit;
    };

    route(4);
    route(1);
}

route[4] {

    # -----------------------------------------------------------------
    # NAT Traversal Section
    # -----------------------------------------------------------------

    if (isflagset(6)) {
        force_rport();
        fix_nated_contact();
        force_rtp_proxy();
    }
}

onreply_route[1] {

    if (isflagset(6) && status=~"(180)|(183)|2[0-9][0-9]") {
        if (!search("^Content-Length:[ ]*0")) {
            force_rtp_proxy();
        };
    };

    if (nat_uac_test("1")) {
        fix_nated_contact();
    };
}

> Hello,
>
> I'm trying to make outbound proxy for my network using OpenSER. 
> Currently I've configured OpenSER as sip registrar/rtpproxy and it 
> works fine even with NAT traversal. The problem is that I don't how 
> shuould I reconfigure my config to make it work as outbound proxy. 
> I've tried many changes with no results. The first problem is how to 
> correctly handle the register method. My config is based on: 
> http://siprouter.onsip.org/doc/gettingstarted/ch08s02.html
>
> Can anyone help me?
>
> Best regards,
> Dawid Jaroslawski
>
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