[OpenSIPS-Users] Opensips 1.10 NAT

Rodrigo Ferreira rsferreira08 at gmail.com
Fri Oct 4 14:19:11 CEST 2013


I'm running out of ideas ..

My rtpproxy is fine

Oct  4 09:10:02 opensips /sbin/opensips[5019]: INFO:rtpproxy:rtpp_test: rtp
proxy <udp:127.0.0.1:7890> found, support for it enabled
Oct  4 09:10:02 opensips /sbin/opensips[5020]: INFO:rtpproxy:rtpp_test: rtp
proxy <udp:127.0.0.1:7890> found, support for it enabled
Oct  4 09:10:02 opensips /sbin/opensips[5018]: INFO:rtpproxy:rtpp_test: rtp
proxy <udp:127.0.0.1:7890> found, support for it enabled
Oct  4 09:10:02 opensips /sbin/opensips[5022]: INFO:rtpproxy:rtpp_test: rtp
proxy <udp:127.0.0.1:7890> found, support for it enabled
Oct  4 09:10:02 opensips /sbin/opensips[5023]: INFO:rtpproxy:rtpp_test: rtp
proxy <udp:127.0.0.1:7890> found, support for it enabled
Oct  4 09:10:02 opensips /sbin/opensips[5017]: INFO:rtpproxy:rtpp_test: rtp
proxy <udp:127.0.0.1:7890> found, support for it enabled
Oct  4 09:10:02 opensips /sbin/opensips[5016]: INFO:rtpproxy:rtpp_test: rtp
proxy <udp:127.0.0.1:7890> found, support for it enabled


and here is my opensips.cfg,

####### Global Parameters #########

debug=3
log_stderror=no
log_facility=LOG_LOCAL0

fork=yes
children=4

/* uncomment the following lines to enable debugging */
#debug=6
#fork=no
#log_stderror=yes

/* uncomment the next line to enable the auto temporary blacklisting of
   not available destinations (default disabled) */
#disable_dns_blacklist=no

/* uncomment the next line to enable IPv6 lookup after IPv4 dns
   lookup failures (default disabled) */
#dns_try_ipv6=yes

/* comment the next line to enable the auto discovery of local aliases
   based on revers DNS on IPs */
auto_aliases=no


listen=udp:###.###.###.###:5060


disable_tcp=yes

db_default_url="mysql://opensips:opensipsrw@localhost
/opensipsmysql://###:###@###/opensips"

####### Modules Section ########

#set module path
mpath="/lib64/opensips/modules/"

#### SIGNALING module
loadmodule "signaling.so"

#### StateLess module
loadmodule "sl.so"

#### Transaction Module
loadmodule "tm.so"
modparam("tm", "fr_timer", 5)
modparam("tm", "fr_inv_timer", 30)
modparam("tm", "restart_fr_on_each_reply", 0)
modparam("tm", "onreply_avp_mode", 1)

#### Record Route Module
loadmodule "rr.so"
/* do not append from tag to the RR (no need for this script) */
modparam("rr", "append_fromtag", 0)

#### MAX ForWarD module
loadmodule "maxfwd.so"

#### SIP MSG OPerationS module
loadmodule "sipmsgops.so"

#### FIFO Management Interface
loadmodule "mi_fifo.so"
modparam("mi_fifo", "fifo_name", "/tmp/opensips_fifo")
modparam("mi_fifo", "fifo_mode", 0666)


#### URI module
loadmodule "uri.so"
modparam("uri", "use_uri_table", 0)

#### MYSQL module
loadmodule "db_mysql.so"

#### USeR LOCation module
loadmodule "usrloc.so"
modparam("usrloc", "nat_bflag", "NAT")
modparam("usrloc", "db_mode",   2)
modparam("usrloc", "db_url",
        "mysql://####:####@######/opensips")

#### REGISTRAR module
loadmodule "registrar.so"
modparam("registrar", "tcp_persistent_flag", "TCP_PERSISTENT")
modparam("registrar", "received_avp", "$avp(received_nh)")
/* uncomment the next line not to allow more than 10 contacts per AOR */
#modparam("registrar", "max_contacts", 10)

#### ACCounting module
loadmodule "acc.so"
/* what special events should be accounted ? */
modparam("acc", "early_media", 0)
modparam("acc", "report_cancels", 0)
/* by default we do not adjust the direct of the sequential requests.
   if you enable this parameter, be sure the enable "append_fromtag"
   in "rr" module */
modparam("acc", "detect_direction", 0)
modparam("acc", "failed_transaction_flag", "ACC_FAILED")
/* account triggers (flags) */
modparam("acc", "db_flag", "ACC_DO")
modparam("acc", "db_missed_flag", "ACC_MISSED")
modparam("acc", "db_url",
        "mysql://opensips:opensipsrw@localhost
/opensipsmysql://###:###@###/opensips")

#### AUTHentication modules
loadmodule "auth.so"
loadmodule "auth_db.so"
modparam("auth_db", "calculate_ha1", yes)
modparam("auth_db", "password_column", "password")
modparam("auth_db", "db_url",
        "mysql://opensips:opensipsrw@localhost
/opensipsmysql://###:###@###/opensips")
modparam("auth_db", "load_credentials", "")

#### ALIAS module
loadmodule "alias_db.so"
modparam("alias_db", "db_url",
        "mysql://opensips:opensipsrw@localhost
/opensipsmysql://###:###@###/opensips")

#### DOMAIN module
loadmodule "domain.so"
modparam("domain", "db_url",
        "mysql://opensips:opensipsrw@localhost
/opensipsmysql://###:###@###/opensips")
modparam("domain", "db_mode", 1)   # Use caching
modparam("auth_db|usrloc|uri", "use_domain", 1)

#### DIALOG module
loadmodule "dialog.so"
modparam("dialog", "dlg_match_mode", 1)
modparam("dialog", "default_timeout", 21600)  # 6 hours timeout
modparam("dialog", "db_mode", 2)
modparam("dialog", "db_url",
        "mysql://opensips:opensipsrw@localhost
/opensipsmysql://###:###@###/opensips")

####  NAT modules
loadmodule "nathelper.so"
modparam("nathelper", "natping_interval", 10)
modparam("nathelper", "ping_nated_only", 1)
modparam("nathelper", "received_avp", "$avp(received_nh)")
modparam("nathelper", "natping_socket", "###.###.###.###:5060")
modparam("nathelper", "sipping_from", "sip:pinger@###.###.###.###")
modparam("nathelper", "sipping_method", "OPTIONS")

loadmodule "rtpproxy.so"
modparam("rtpproxy", "rtpproxy_sock", "udp:127.0.0.1:7890")

####  DIALPLAN module
loadmodule "dialplan.so"
modparam("dialplan", "db_url",
        "mysql://opensips:opensipsrw@localhost
/opensipsmysql://###:###@###/opensips")

####  DYNAMMIC ROUTING module
loadmodule "drouting.so"
modparam("drouting", "db_url",
        "mysql://opensips:opensipsrw@localhost
/opensipsmysql://###:###@###/opensips")


####### Routing Logic ########

# main request routing logic

route{
        force_rport();
        if (nat_uac_test("23")) {
                if (is_method("REGISTER")) {
                        fix_nated_register();
                        setbflag(NAT);
                } else {
                        fix_nated_contact();
                        setflag(NAT);
                }
        }


        if (!mf_process_maxfwd_header("10")) {
                sl_send_reply("483","Too Many Hops");
                exit;
        }

        if (has_totag()) {
                # sequential request withing a dialog should
                # take the path determined by record-routing
                if (loose_route()) {

                        # validate the sequential request against dialog
                        if ( $DLG_status!=NULL && !validate_dialog() ) {
                                xlog("In-Dialog $rm from $si (callid=$ci)
is not valid according to dialog\n");
                                ## exit;
                        }

                        if (is_method("BYE")) {
                                setflag(ACC_DO); # do accounting ...
                                setflag(ACC_FAILED); # ... even if the
transaction fails
                        } else if (is_method("INVITE")) {
                                # even if in most of the cases is useless,
do RR for
                                # re-INVITEs alos, as some buggy clients do
change route set
                                # during the dialog.
                                record_route();
                        }

                        if (check_route_param("nat=yes"))
                                setflag(NAT);

                        # route it out to whatever destination was set by
loose_route()
                        # in $du (destination URI).
                        route(relay);
                } else {

                        if ( is_method("ACK") ) {
                                if ( t_check_trans() ) {
                                        # non loose-route, but stateful
ACK; must be an ACK after
                                        # a 487 or e.g. 404 from upstream
server
                                        t_relay();
                                        exit;
                                } else {
                                        # ACK without matching transaction
->
                                        # ignore and discard
                                        exit;
                                }
                        }
                        sl_send_reply("404","Not here");
                }
                exit;
        }

        # CANCEL processing
        if (is_method("CANCEL"))
        {
                if (t_check_trans())
                        t_relay();
                exit;
        }

        t_check_trans();

        if ( !(is_method("REGISTER")  || is_from_gw() ) ) {

                if (is_from_local())
                {

                        # authenticate if from local subscriber
                        # authenticate all initial non-REGISTER request
that pretend to be
                        # generated by local subscriber (domain from FROM
URI is local)
                        if (!proxy_authorize("", "subscriber")) {
                                proxy_challenge("", "0");
                                exit;
                        }
                        if (!db_check_from()) {
                                sl_send_reply("403","Forbidden auth ID");
                                exit;
                        }

                        consume_credentials();
                        # caller authenticated

                } else {
                        # if caller is not local, then called number must
be local

                        if (!is_uri_host_local()) {
                                send_reply("403","Rely forbidden");
                                exit;
                        }
                }

        }

        # preloaded route checking
        if (loose_route()) {
                xlog("L_ERR",
                "Attempt to route with preloaded Route's
[$fu/$tu/$ru/$ci]");
                if (!is_method("ACK"))
                        sl_send_reply("403","Preload Route denied");
                exit;
        }

        # record routing
        if (!is_method("REGISTER|MESSAGE"))
                record_route();

        # account only INVITEs
        if (is_method("INVITE")) {

                # create dialog with timeout
                if ( !create_dialog("B") ) {
                        send_reply("500","Internal Server Error");
                        exit;
                }

                setflag(ACC_DO); # do accounting
        }


        if (!is_uri_host_local()) {
                append_hf("P-hint: outbound\r\n");

                route(relay);
        }

        # requests for my domain

        if (is_method("PUBLISH|SUBSCRIBE"))
        {
                sl_send_reply("503", "Service Unavailable");
                exit;
        }

        if (is_method("REGISTER"))
        {
                fix_nated_register();
                fix_nated_contact();
                # authenticate the REGISTER requests
                if (!www_authorize("", "subscriber"))
                {
                        www_challenge("", "0");
                        exit;
                }

                if (!db_check_to())
                {
                        sl_send_reply("403","Forbidden auth ID");
                        exit;
                }

                if ( 0 ) setflag(TCP_PERSISTENT);

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

                exit;
        }

        if ($rU==NULL) {
                # request with no Username in RURI
                sl_send_reply("484","Address Incomplete");
                exit;
        }


        # apply DB based aliases
        alias_db_lookup("dbaliases");


        # apply transformations from dialplan table
        dp_translate("0","$rU/$rU");


        if ($rU=~"^\+[1-9][0-9]+$") {

                if (!do_routing("0")) {
                        send_reply("500","No PSTN Route found");
                        exit;
                }

                route(relay);
                exit;
        }


        # do lookup with method filtering
        if (!lookup("location","m")) {
                if (!db_does_uri_exist()) {
                        send_reply("420","Bad Extension");
                        exit;
                }

                t_newtran();
                t_reply("404", "Not Found");
                exit;
        }

        if (isbflagset(NAT)) setflag(NAT);

        # when routing via usrloc, log the missed calls also
        setflag(ACC_MISSED);
        route(relay);
}


route[relay] {
        # for INVITEs enable some additional helper routes
        if (is_method("INVITE")) {
                if(nat_uac_test("127")){
                        # Usuario identificado como atras de nat
                        xlog("Usuario atras de nat em handle nat");
                        fix_nated_contact();
                }
                if (isflagset(NAT)) {
                        rtpproxy_offer("ro");
                }

                t_on_branch("per_branch_ops");
                t_on_reply("handle_nat");
                t_on_failure("missed_call");
        }

        if (isflagset(NAT)) {
                add_rr_param(";nat=yes");
                }

        if (!t_relay()) {
                send_reply("500","Internal Error");
        };
        exit;
}




branch_route[per_branch_ops] {
        xlog("new branch at $ru\n");
}


onreply_route[handle_nat] {
#       if (nat_uac_test("1"))
#               fix_nated_contact();
#       if ( isflagset(NAT) )
#               rtpproxy_answer("ro");
#       xlog("incoming reply\n");

# Recebemos resposta do pacote
        xlog("incoming reply\n");

        # Verificamos aqui se esta requisicao possui SDP
        if(is_method("ACK") && has_body("application/sdp")){
                # Atendemos no rtpproxy
                rtpproxy_answer();

        }else if(has_body("application/sdp")){
                # possuindo sdp vamos re-escrever a informacao
                #fix_nated_sdp("2");
                rtpproxy_offer();
        }


        # Vamos tentar identificar se o usuario esta atras de nat
        # executamos neste nivel pois aqui sera executado
        # no momento que recebemos resposta, assim garantimos
        # que em todos os casos manipularemos o nat
        if(nat_uac_test("127")){
                # Usuario identificado como atras de nat
                xlog("Usuario atras de nat em handle nat");
                fix_nated_contact();
        }

}


failure_route[missed_call] {
        if (t_was_cancelled()) {
                exit;
        }

        # uncomment the following lines if you want to block client
        # redirect based on 3xx replies.
        ##if (t_check_status("3[0-9][0-9]")) {
        ##t_reply("404","Not found");
        ##      exit;
        ##}


}



local_route {
        if (is_method("BYE") && $DLG_dir=="UPSTREAM") {

                acc_db_request("200 Dialog Timeout", "acc");

        }
}




Atenciosamente.
Eng.° Rodrigo Ferreira
ITIL v3 Certified




2013/10/4 Rodrigo Ferreira <rsferreira08 at gmail.com>
Yes I did Mike,

and my SIP messages are ok.

I will take a look at your tutorial.

tks



Atenciosamente.
Eng.° Rodrigo Ferreira
ITIL v3 Certified




2013/10/3 Mike Tesliuk <mike at ultra.net.br>
Did you try to made some debug rodrigo ? maybe some rule is missing on your
route script

i made a tutorial over version 1.9 that you can check

[portugues]
http://opensips.com.br/wiki/index.php?title=Opensips_NAT_Script_com_RTPproxy
[english]
http://opensips.com.br/wiki/index.php?title=Oopensips_Nat_script_with_RTPPROXY_-_English




2013/10/3 Rodrigo Ferreira <rsferreira08 at gmail.com>
Hi guys,

After a long time without using Opensips (almost a year) I tried to install
the opensips 1.10 and everything went well BUT when I make a call, there's
no audio, I know that is something because of NAT, but I have the nathelper
and rtpproxy configuration on my opensips.cfg.

There's anything else that I could take a look at?

Thanks


Atenciosamente.
Eng.° Rodrigo Ferreira
ITIL v3 Certified



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