)
                record_route();

        # account only INVITEs
        if (is_method("INVITE"))
        {
                setflag(FLT_ACC); # do accounting
        }

        # dispatch requests to foreign domains
        route(SIPOUT);

        ### requests for my local domains

        # handle presence related requests
        route(PRESENCE);

        # handle registrations
        route(REGISTRAR);

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

        #!ifdef WITH_FREESWITCH
        # save callee ID
        $avp(callee) = $rU;
        route(FSDISPATCH);
        #!endif

        # user location service
        route(LOCATION);

        route(RELAY);
}

route[RELAY] {
#!ifdef WITH_NAT
        if (check_route_param("nat=yes")) {
                setbflag(FLB_NATB);
        }
        if (isflagset(FLT_NATS) || isbflagset(FLB_NATB)) {
                route(RTPPROXY);
        }
#!endif

#!ifdef WITH_CFGSAMPLES
        /* example how to enable some additional event routes */
        if (is_method("INVITE")) {
                #t_on_branch("BRANCH_ONE");
                t_on_reply("REPLY_ONE");
                t_on_failure("FAIL_ONE");
        }
#!endif

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

# Per SIP request initial checks
route[REQINIT] {
#!ifdef WITH_ANTIFLOOD
        # flood dection from same IP and traffic ban for a while
        # be sure you exclude checking trusted peers, such as pstn gateways
        # - local host excluded (e.g., loop to self)
        if(src_ip!=myself)
        {
                if($sht(ipban=>$si)!=$null)
                {
                        # ip is already blocked
                        xdbg("request from blocked IP - $rm from $fu (IP:$si:$sp)\n");
                        exit;
                }
                if (!pike_check_req())
                {
                        xlog("L_ALERT","ALERT: pike blocking $rm from $fu (IP:$si:$sp)\n");
                        $sht(ipban=>$si) = 1;
                        exit;
                }
        }
#!endif

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

        if(!sanity_check("1511", "7"))
        {
                xlog("Malformed SIP message from $si:$sp\n");
                exit;
        }
}

# Handle requests within SIP dialogs
route[WITHINDLG] {
        if (has_totag()) {
                # sequential request withing a dialog should
                # take the path determined by record-routing
                if (loose_route()) {
                        if (is_method("BYE")) {
                                setflag(FLT_ACC); # do accounting ...
                                setflag(FLT_ACCFAILED); # ... even if the transaction fails
                        }
                        route(RELAY);
                } else {
                        if (is_method("SUBSCRIBE") && uri == myself) {
                                # in-dialog subscribe requests
                                route(PRESENCE);
                                exit;
                        }
                        if ( is_method("ACK") ) {
                                if ( t_check_trans() ) {
                                        # no 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;
        }
}

# Handle SIP registrations
route[REGISTRAR] {
        if (is_method("REGISTER"))
        {
                if(isflagset(FLT_NATS))
                {
                        setbflag(FLB_NATB);
                        # uncomment next line to do SIP NAT pinging
                        ## setbflag(FLB_NATSIPPING);
                }
                if (!save("location"))
                        sl_reply_error();

                exit;
        }
}

# USER location service
route[LOCATION] {

#!ifdef WITH_ALIASDB
        # search in DB-based aliases
        alias_db_lookup("dbaliases");
#!endif

        if (!lookup("location")) {
                switch ($rc) {
                        case -1:
                        case -3:
                                t_newtran();
                                t_reply("404", "Not Found");
                                exit;
                        case -2:
                                sl_send_reply("405", "Method Not Allowed");
                                exit;
                }
        }

        # when routing via usrloc, log the missed calls also
        if (is_method("INVITE"))
        {
                setflag(FLT_ACCMISSED);
        }
}

# Presence server route
route[PRESENCE] {
        if(!is_method("PUBLISH|SUBSCRIBE"))
                return;

#!ifdef WITH_PRESENCE
        if (!t_newtran())
        {
                sl_reply_error();
                exit;
        };

        if(is_method("PUBLISH"))
        {
                handle_publish();
                t_release();
        }
        else
        if( is_method("SUBSCRIBE"))
        {
                handle_subscribe();
                t_release();
        }
        exit;
#!endif

        # if presence enabled, this part will not be executed
        if (is_method("PUBLISH") || $rU==$null)
        {
                sl_send_reply("404", "Not here");
                exit;
        }
        return;
}

# Authentication route
route[AUTH] {
#!ifdef WITH_AUTH
        if (is_method("REGISTER"))
        {
                # authenticate the REGISTER requests (uncomment to enable auth)
                if (!www_authorize("$td", "subscriber"))
                {
                        www_challenge("$td", "0");
                        exit;
                }

                if ($au!=$tU)
                {
                        sl_send_reply("403","Forbidden auth ID");
                        exit;
                }
        } else {

#!ifdef WITH_FREESWITCH
        if(route(FSINBOUND))
                return;
#!endif

#!ifdef WITH_IPAUTH
                if(allow_source_address())
                {
                        # source IP allowed
                        return;
                }
#!endif

                # authenticate if from local subscriber
                if (from_uri==myself)
                {
                        if (!proxy_authorize("$fd", "subscriber")) {
                                proxy_challenge("$fd", "0");
                                exit;
                        }
                        if (is_method("PUBLISH"))
                        {
                                if ($au!=$tU) {
                                        sl_send_reply("403","Forbidden auth ID");
                                        exit;
                                }
                        } else {
                                if ($au!=$fU) {
                                        sl_send_reply("403","Forbidden auth ID");
                                        exit;
                                }
                        }

                        consume_credentials();
                        # caller authenticated
                } else {
                        # caller is not local subscriber, then check if it calls
                        # a local destination, otherwise deny, not an open relay here
                        if (!uri==myself)
                        {
                                sl_send_reply("403","Not relaying");
                                exit;
                        }
                }
        }
#!endif
        return;
}

# Caller NAT detection route
route[NAT] {
#!ifdef WITH_NAT
        force_rport();
        if (nat_uac_test("19")) {
                if (method=="REGISTER") {
                        fix_nated_register();
                } else {
                        fix_nated_contact();
                }
                setflag(FLT_NATS);
        }
#!endif
        return;
}

# RTPProxy control
route[RTPPROXY] {
#!ifdef WITH_NAT
        if (is_method("BYE")) {
                unforce_rtp_proxy();
        } else if (is_method("INVITE")){
                force_rtp_proxy();
        }
        if (!has_totag()) add_rr_param(";nat=yes");
#!endif
        return;
}

# Routing to foreign domains
route[SIPOUT] {
        if (!uri==myself)
        {
                append_hf("P-hint: outbound\r\n");
                route(RELAY);
        }
}

#!ifdef WITH_FREESWITCH
# FreeSWITCH routing blocks
route[FSINBOUND] {
        if($si== $sel(cfg_get.freeswitch.bindip)
                        && $sp==$sel(cfg_get.freeswitch.bindport))
                return 1;
        return -1;
}

route[FSDISPATCH] {
        if(!is_method("INVITE"))
                return;
        if(route(FSINBOUND))
                return;

        # dial number selection
        switch($rU) {
                case /"^41$":
                        # 41 - voicebox menu
                        # allow only authenticated users
                        if($au==$null)
                        {
                                sl_send_reply("403", "Not allowed");
                                exit;
                        }
                        $rU = "vm-" + $au;
                break;
                case /"^441[0-9][0-9]$":
                        # starting with 44 folowed by 1XY - direct call to voice box
                        strip(2);
                        route(FSVBOX);
                break;
                case /"^433[01][0-9][0-9]$":
                        # starting with 433 folowed by (0|1)XY - conference
                        strip(2);
                break;
                case /"^45[0-9]+$":
                        strip(2);
                break;
                default:
                        # offline - send to voicebox
                        if (!registered("location"))
                        {
                                route(FSVBOX);
                                exit;
                        }
                        # online - do bridging
                        prefix("kb-");
                        if(is_method("INVITE"))
                        {
                                # in case of failure - re-route to FreeSWITCH VoiceMail
                                t_on_failure("FAIL_FSVBOX");
                        }
        }
        route(FSRELAY);
        exit;
}

route[FSVBOX] {
        if(!($rU=~"^1[0-9][0-9]+$"))
                return;
        prefix("vb-");
        route(FSRELAY);
}

# Send to FreeSWITCH
route[FSRELAY] {
        $du = "sip:" + $sel(cfg_get.freeswitch.bindip) + ":"
                        + $sel(cfg_get.freeswitch.bindport);
        if($var(newbranch)==1)
        {
                append_branch();
                $var(newbranch) = 0;
        }
        route(RELAY);
        exit;
}

#!endif

#!ifdef WITH_FREESWITCH
failure_route[FAIL_FSVBOX] {
#!ifdef WITH_NAT
        if (is_method("INVITE")
                        && (isbflagset(FLB_NATB) || isflagset(FLT_NATS))) {
                unforce_rtp_proxy();
        }
#!endif

        if (t_is_canceled()) {
                exit;
        }

        if (t_check_status("486|408")) {
                # re-route to FreeSWITCH VoiceMail
                $rU = $avp(callee);
                $var(newbranch) = 1;
                route(FSVBOX);
        }
}
#!endif

# sample config file for dispatcher module

#!ifdef WITH_DISPATCHER

modparam("dispatcher", "db_url", "mysql://openser:password@localhost/openser")

route{
        if ( !mf_process_maxfwd_header("10") )
        {
                sl_send_reply("483","To Many Hops");
                drop();
        };

        ds_select_dst("1", "0");

        forward();
        # t_relay();
}
#!endif