Default openSIPS loadbalancer file

Default openSIPS loadbalancer file

####### 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:127.0.0.1:5060   # CUSTOMIZE ME

disable_tcp=yes

disable_tls=yes

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

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

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

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

#### Transaction Module
loadmodule "tm.so"
modparam("tm", "fr_timeout", 5)
modparam("tm", "fr_inv_timeout", 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"

#### AVPOPS module
loadmodule "avpops.so"

#### 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", "log_flag", "ACC_DO")
modparam("acc", "log_missed_flag", "ACC_MISSED")

#### 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/opensips") # CUSTOMIZE ME

#### LOAD BALANCER module
loadmodule "load_balancer.so"
modparam("load_balancer", "db_url",
        "mysql://opensips:opensipsrw@localhost/opensips") # CUSTOMIZE ME
modparam("load_balancer", "probing_method", "OPTIONS")

modparam("load_balancer", "probing_interval", 30)

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

# main request routing logic

route{

        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();
                        }

                        # 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;
        }

        #### INITIAL REQUESTS

        # CANCEL processing
        if (is_method("CANCEL")) {
                if (t_check_trans())
                        t_relay();
                exit;
        } else if (!is_method("INVITE")) {
                send_reply("405","Method Not Allowed");
                exit;
        }

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

        t_check_trans();

        # 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
        record_route();

        setflag(ACC_DO); # do accounting

        if ( !load_balance("1","channel")) {

                send_reply("500","No Destination available");
                exit;
        }

        t_on_failure("GW_FAILOVER");

        route(RELAY);
}

route[RELAY] {
        if (!t_relay()) {
                sl_reply_error();
        };
        exit;
}

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

        # failure detection with redirect to next available trunk
        if (t_check_status("(408)|([56][0-9][0-9])")) {
                xlog("Failed trunk $rd/$du detected \n");

                if ( load_balance("1","channel") ) {

                        t_on_failure("GW_FAILOVER");
                        t_relay();
                        exit;
                }

                send_reply("500","All GW are down");
        }
}

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

                acc_log_request("200 Dialog Timeout");

        }
}
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