# --------------------------------------------------------------------
#
# start RTPProxy with: rtpproxy -l 77.77.77.777 -s udp:localhost:7890
# 

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

debug=3
log_stderror=no
log_facility=LOG_LOCAL0

fork=yes
children=4

/* uncomment the following lines to enable debugging */
#debug=9
#fork=no
#log_stderror=yes

port=5060
listen=77.77.77.777
children=4

# --- module loading

mpath="//lib64/opensips/modules/"
        
loadmodule "db_mysql.so"
loadmodule "sl.so"
loadmodule "tm.so"
loadmodule "rr.so"
loadmodule "maxfwd.so"
loadmodule "usrloc.so"
loadmodule "registrar.so"
loadmodule "textops.so"
loadmodule "mi_fifo.so"
loadmodule "uri_db.so"
loadmodule "uri.so"
loadmodule "xlog.so"
loadmodule "dialog.so" 
loadmodule "nat_traversal.so"
loadmodule "nathelper.so"
loadmodule "domain.so"

# --- setting module parameters

# -- mi_fifo params --
modparam("mi_fifo", "fifo_name", "/tmp/opensips_fifo")

# -- rr params --
modparam("rr", "enable_full_lr", 1)
modparam("rr", "append_fromtag", 0)

# -- registrar params --
modparam("registrar", "method_filtering", 1)
modparam("registrar|nathelper", "received_avp", "$avp(i:42)")

# ----- uri_db params -----
modparam("uri_db", "use_uri_table", 0)
modparam("uri_db", "db_url", "")

# -- usrloc params --
modparam("usrloc", "db_mode", 0)
modparam("usrloc", "nat_bflag", 6)

# ----- domain params -----
modparam("domain", "db_url",
        "mysql://opensips:opensipsrw@localhost/opensips")
modparam("domain", "db_mode", 1)   # Use caching

# ----- multi-module params -----
modparam("alias_db|auth_db|usrloc|uri_db", "use_domain", 1)

# -- nathelper
modparam("nathelper", "rtpproxy_sock", "udp:127.0.0.1:7890")
modparam("nathelper", "sipping_bflag", 7)

#-------------------------Dialog Params---------------------------
modparam("dialog", "dlg_flag", 4)

# --- main routing logic
route{
        if (!mf_process_maxfwd_header("10")) {
                sl_send_reply("483","Too Many Hops");
                exit;
        };


        # NAT detection
        route(2);

        if (loose_route()) {
                xlog("LOOSE ROUTE\n");
                append_hf("P-hint: rr-enforced\r\n");
                route(1);
        };

        if (!is_uri_host_local()) {
                xlog("THIS IS OUTBOUND!\n");
                append_hf("P-hint: outbound\r\n");
                route(1);
        };

        if (is_uri_host_local()) {
                if (method=="REGISTER") {
                        if (isflagset(5)) {
                                setbflag(6);
                                # if you want OPTIONS natpings uncomment next
                                # setbflag(7);
                        };
                        if(!save("location")) {
                                xlog("Saving contact failed - M=$rm RURI=$ru F=$fu T=$tu IP=$si ID=$ci\n");
                                sl_reply_error();
                                exit;
                        }
                        exit;
                };

                if (!lookup("location")) {
                        sl_send_reply("404", "Not Found");
                        exit;
                };
                append_hf("P-hint: usrloc applied\r\n");
        };

        route(1);
}

route[1] {
        if (subst_uri('/(sip:.*);nat=yes/\1/')){
                setbflag(6);
        };

        if (isflagset(5)||isbflagset(6)) {
                route(3);
        }

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

route[2]{
        force_rport();
        if (nat_uac_test("19")) {
                if (is_method("REGISTER")) {
                        fix_nated_register();
                } else {
                        fix_nated_contact();
                };
                setflag(5);
        };
        if(!is_method("REGISTER")){
                if(nat_uac_test("19")){
                        record_route(";nat=yes");
                } else {
                        record_route();
                };
        };
}

route[3] {
        if (is_method("BYE|CANCEL")) {
                unforce_rtp_proxy();
        } else if (is_method("INVITE")){
                force_rtp_proxy();
                t_on_failure("1");
        };
        if (isflagset(5)) {
                search_append('Contact:.*sip:[^>[:cntrl:]]*', ';nat=yes');
        }
        t_on_reply("1");
}

failure_route[1] {
        if (isbflagset(6) || isflagset(5)) {
                unforce_rtp_proxy();
        }
}

onreply_route[1] {
        if ((isflagset(5) || isbflagset(6)) && status=~"(183)|(2[0-9][0-9])") {
                if (has_body()) {
                        force_rtp_proxy();
                }
        }
        search_append('Contact:.*sip:[^>[:cntrl:]]*', ';nat=yes');

        if (isbflagset(6)) {
                fix_nated_contact();
        }
}