######################################################################
## Core Parameters
######################################################################
# chroot=
# group="opensips"
# user="opensips"
# dbversion_table=
disable_core_dump=no
max_while_loops=100
maxbuffer=262144
memdump=3
memlog=2
# open_files_limit=2048
server_signature=no
server_header="Server: 2600hz Trunk Store"
user_agent_header="User-Agent: 2600hz Trunk Store"

######################################################################
## Core Fork Parameters
######################################################################
fork=yes
children=8
tcp_children=8

######################################################################
## Core Logging Parameters
######################################################################
debug=3
sip_warning=0
log_stderror=no
log_facility=LOG_LOCAL0
log_name="opensips"

######################################################################
## Aliases
######################################################################
auto_aliases=no
alias=localhost
alias=localhost.localdomain

######################################################################
## Connectivity
######################################################################
listen=udp:eth0:5060
# listen=udp:eth1:5060
tos=IPTOS_LOWDELAY
# advertised_address=174.129.131.38
# advertised_port=5060
mcast_loopback=no
mcast_ttl=1
mhomed=0
# tcp_accept_aliases
tcp_connect_timeout=3
tcp_connection_lifetime=120
tcp_max_connections=2048
# tcp_poll_method=select

######################################################################
## DNS
######################################################################
dns=no
dns_retr_time=1
dns_retr_no=3
# dns_servers_no=2
dns_try_ipv6=no
disable_dns_blacklist=yes
disable_dns_failover=no
dns_use_search_list=no
rev_dns=no

######################################################################
## SIP
######################################################################
check_via=0
#! disable_503_translation=no
disable_stateless_fwd=no
disable_tcp=no
# disable_tls=no
#! reply_to_via=1

######################################################################
## TLS
######################################################################
# disable_tls=no
# listen=tls:your_IP:5061
# tls_verify_server=1
# tls_verify_client=1
# tls_require_client_certificate=0
# tls_method=TLSv1
# tls_certificate="/usr/local/etc/opensips/tls/user/user-cert.pem"
# tls_private_key="/usr/local/etc/opensips/tls/user/user-privkey.pem"
# tls_ca_list="/usr/local/etc/opensips/tls/user/user-calist.pem"

######################################################################
## Destination Blacklist
######################################################################
# dst_blacklist=gw:{( tcp , 192.168.2.100 , 5060 , "" ),( any , 192.168.2.101 , 0 , "" )}
# dst_blacklist=net_filter2:{ !( any , 192.168.30.0/255.255.255.0 , 0 , "" )}

######################################################################
## Attribute Value Pairs
######################################################################
# avp_aliases="uuid=I:660;email=s:email_addr;fwd=i:753"

######################################################################
## Module Loading
######################################################################
mpath="/usr/local/lib64/opensips/modules/"
loadmodule "memcached.so"
loadmodule "signaling.so"
loadmodule "sl.so"
loadmodule "tm.so"
loadmodule "maxfwd.so"
loadmodule "rr.so"
loadmodule "path.so"
loadmodule "uri.so"
loadmodule "textops.so"
loadmodule "usrloc.so"
loadmodule "nathelper.so"
loadmodule "dispatcher.so"
loadmodule "mi_fifo.so"
# loadmodule "mi_datagram.so"
# loadmodule "xlog.so"

######################################################################
## Memcached Module Parameters
######################################################################
modparam("memcached", "server", "callid_hash = 127.0.0.1:11211")

######################################################################
## Stateless UA Module Parameters
######################################################################
modparam("sl", "enable_stats", 1)

######################################################################
## SIP Transaction UA Module Parameters
######################################################################
modparam("tm", "fr_timer", 5)
# modparam("tm", "fr_inv_timer", 60)
# modparam("tm", "wt_timer", 5)
# modparam("tm", "delete_timer", 2)
# modparam("tm", "T1_timer", 500)
# modparam("tm", "T2_timer", 4000)
# modparam("tm", "ruri_matching", 1)
# modparam("tm", "via1_matching", 1)
# modparam("tm", "unix_tx_timeout", 2)
# modparam("tm", "restart_fr_on_each_reply", 1)
# modparam("tm", "fr_timer_avp", "$avp(i:24)")
# modparam("tm", "fr_inv_timer_avp", "$avp(i:25)")
# modparam("tm", "tw_append",
#    "test: ua=$hdr(User-Agent) ;avp=$avp(i:10);$rb;time=$Ts")
# modparam("tm", "pass_provisional_replies", 0)
# modparam("tm", "syn_branch", 1)
# modparam("tm", "onreply_avp_mode", 0)
# modparam("tm", "disable_6xx_block", 0)
# modparam("tm", "enable_stats", 1)
# modparam("tm", "minor_branch_flag", 3)

######################################################################
## Max Forward Module Parameters
######################################################################
modparam("maxfwd", "max_limit", 30)

######################################################################
## Record Route Module Parameters
######################################################################
modparam("rr", "enable_full_lr", 1)
modparam("rr", "append_fromtag", 1)
modparam("rr", "enable_double_rr", 0)
modparam("rr", "add_username", 0)

######################################################################
## Path Module Parameters
######################################################################
modparam("path", "use_received", 1)

######################################################################
## URI Module Parameters
######################################################################
# modparam("uri", "aaa_url", "radius:/etc/radiusclient-ng/radiusclient.conf")
modparam("uri", "use_sip_uri_host", 0)
modparam("uri", "use_uri_table", 0)
modparam("uri", "service_type", 10)
modparam("uri", "use_domain", 1)
modparam("uri", "use_uri_table", 0)
# modparam("uri", "db_url", "mysql://username:password@localhost/opensips")
# modparam("uri", "db_table", "uri")
# modparam("uri", "user_column", "username")
# modparam("uri", "domain_column", "domain")
# modparam("uri", "uriuser_column", "uri_user")

######################################################################
## User Location Module Parameters
######################################################################
modparam("usrloc", "nat_bflag", 6)
modparam("usrloc", "use_domain", 1)
modparam("usrloc", "desc_time_order", 0)
modparam("usrloc", "timer_interval", 60)
modparam("usrloc", "matching_mode", 0)
modparam("usrloc", "cseq_delay", 20)
modparam("usrloc", "hash_size", 9)
modparam("usrloc", "db_mode", 0)
# modparam("usrloc", "db_url", "dbdriver://username:password@dbhost/dbname")
modparam("usrloc", "fetch_rows", 2000)
modparam("usrloc", "user_column", "username")
modparam("usrloc", "domain_column", "domain")
modparam("usrloc", "contact_column", "contact")
modparam("usrloc", "expires_column", "expires")
modparam("usrloc", "q_column", "q")
modparam("usrloc", "callid_column", "callid")
modparam("usrloc", "cseq_column", "cseq")
modparam("usrloc", "methods_column", "methods")
modparam("usrloc", "flags_column", "flags")
modparam("usrloc", "cflags_column", "cflags")
modparam("usrloc", "user_agent_column", "user_agent")
modparam("usrloc", "received_column", "received")
modparam("usrloc", "socket_column", "socket")
modparam("usrloc", "path_column", "path")

######################################################################
## Nathelper Module Parameters
######################################################################
# modparam("nathelper", "rtpproxy_sock", "udp:127.0.0.1:7890")
modparam("nathelper", "natping_interval", 30)
modparam("nathelper", "ping_nated_only", 1)
# modparam("nathelper", "natping_processes", 3)
modparam("nathelper", "sipping_bflag", 7)
modparam("nathelper", "sipping_from", "sip:sipcheck@184.106.172.9 ")
# modparam("nathelper", "sipping_method", "INFO")

######################################################################
## Dispatcher Module Parameters
######################################################################
modparam("dispatcher", "list_file", "/usr/local/etc/opensips/dispatcher.list")
modparam("dispatcher", "flags", 2)
modparam("dispatcher", "use_default", 0)
modparam("dispatcher", "force_dst", 1)
modparam("dispatcher", "dst_avp", "$avp(i:271)")
modparam("dispatcher", "attrs_avp", "$avp(i:272)")
modparam("dispatcher", "grp_avp", "$avp(i:273)")
modparam("dispatcher", "cnt_avp", "$avp(i:274)")
modparam("dispatcher", "hash_pvar", "$avp(i:273)")
# modparam("dispatcher", "setid_pvar", "$var(setid)")
modparam("dispatcher", "ds_ping_method", "OPTIONS")
modparam("dispatcher", "ds_ping_from", "sip:sipcheck@184.106.172.9:5060")
modparam("dispatcher", "ds_ping_interval", 10)
# modparam("dispatcher", "ds_ping_sock", "udp:10.80.25.168:5080")
modparam("dispatcher", "ds_probing_threshhold", 3)
modparam("dispatcher", "ds_probing_mode", 0)
modparam("dispatcher", "options_reply_codes", "501, 403, 404, 400")

######################################################################
## MI-FIFO Module Parameters
######################################################################
modparam("mi_fifo", "fifo_name", "/tmp/opensips_fifo")

######################################################################
## MI-Datagram Module Parameters
######################################################################
# modparam("mi_datagram", "socket_name", "udp:10.180.180.230:8889")
# modparam("mi_datagram", "children_count", 1)
# modparam("mi_datagram", "unix_socket_mode", 0600)
# modparam("mi_datagram", "unix_socket_group", "root")
# modparam("mi_datagram", "unix_socket_user", "root")
# modparam("mi_datagram", "socket_timeout", 2000)
# modparam("mi_datagram", "reply_indent", "\t")

######################################################################
## XLog Module Parameters
######################################################################
# modparam("xlog", "buf_size", 4096)
# modparam("xlog", "force_color", 0)

######################################################################
## Multiple Module Parameters
######################################################################


######################################################################
## Main Request Routing
######################################################################
route
{
    if (!mf_process_maxfwd_header("10"))
    {
        xlog("L_WARN", "To many hops to [$ou] from [$si:$sp]");

        sl_send_reply("483", "We refuse to process this endless imbroglio");

        exit;
    }

    xlog("L_INFO", "Received [$rm] [$ou] from [$si:$sp]");
    xlog("L_DBG", "    From: [$fu]");
    xlog("L_DBG", "      To: [$tu]");

    if (is_method("OPTIONS"))
    {
        xlog("L_NOTICE", "      Method [$rm] is not supported, sending 503 to [$si:$sp]");

        sl_send_reply("503", "Rawr!!");

        exit;
    }

    t_on_reply("1");

    if (nat_uac_test("18"))
    {
        xlog("L_INFO", "      Source port is different from the port in Via, force rport");

        force_rport();

        fix_nated_contact();

        if (has_body("application/sdp"))
        {
            xlog("L_INFO", "      Fixing nated SDP, rewritting media and origin with [$si]");

            fix_nated_sdp("10");
        }

        # If this leads to a sucessfull register then flag 5 will cause nat=yes to be append to the contact
        # and (when appropriate) the use of the nat_compensator reply branch
        setflag(5);
    }

    if (has_totag())
    {
        if (subst_uri('/(sip:.*);nat=yes/\1/'))
        {
            xlog("L_INFO", "      Set reply branch for NAT compensation on this message in the existing dialog");

            t_on_reply("nat_compensator");
        }

        # sequential request withing a dialog should
        # take the path determined by record-routing
        if (loose_route())
        {
            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.
                xlog("L_INFO", "      Record route for loosely routed INVITE on an existing dialog");

                #record_route();
            }

            # route it out to whatever destination was set by loose_route()
            # in $du (destination URI).
            route(1);
        }
        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
                    xlog("L_INFO", "      Forwarding a stateful ACK for a known dialog");

                    t_relay();

                    exit;
                }
                else
                {
                    # ACK without matching transaction ->
                    # ignore and discard
                    xlog("L_NOTICE", "      Recieved ACK from [$si:$sp] for unknown dialog, ignoring");

                    exit;
                }
            }

            xlog("L_WARN", "      Recieved [$rm] for a dialog but the RR is invalid, sending 486 to [$si:$sp]");

            sl_send_reply("486", "PC Load Letter");
        }

        exit;
    }

    # CANCEL processing
    if (is_method("CANCEL"))
    {
        # If this cancel is part of a transaction
        # then pass it along to concerned parties
        if (t_check_trans())
        {
            t_relay();
        }

        exit;
    }

    # If this is a retransmission it will break/stop the script
    # and do standard processing of the message
    t_check_trans();

    # Since it is possible to suppress a second provisional response, the first one can be sent pre-emptively
    sl_send_reply("100", "Thinking about it...");

    # preloaded route checking
    if (loose_route())
    {
        if (!is_method("ACK"))
        {
            xlog("L_WARN", "    Attempt to route with preloaded Route's [$fu/$tu/$ru/$ci] from [$si:$sp]");

            sl_send_reply("403", "Please leave the routing up to us");

            exit;
        }
    }

    if (is_method("REGISTER"))
    {
        if (!add_path_received())
        {
            xlog("L_ERR", "    Unable to add path for [$rm] [$tu] from [$si:$sp], sending 503");

            sl_send_reply("503", "Internal path befuddlement");

            exit;
        }
    }

    # is not from media servers
    if (!ds_is_in_list("$si", "$sp", "1") and !ds_is_in_list("$si", "$sp", "2"))
    {
        if(cache_fetch("memcached_callid_hash", "$ci", $avp(i:55)))
        {
            $rd = $avp(i:55);

            xlog("L_INFO", "      Reconized call-id [$ci] as belonging to media server [$rd]");
        }
        else
        {
            xlog("L_INFO", "      Selecting domain from set 1 using round-robin");

            ds_select_domain("1", "4");

            t_on_failure("1");
        }

        append_hf("X-AUTH-IP: $si\r\n");

        if (isflagset(5))
        {
            xlog("L_INFO", "    This contact is behind NAT, appending nat=yes to the Contact header");

            # "nat=yes" is added to help with in-dialog re-INVITE, UPDATE, etc.
            search_append('Contact:.*sip:[^>[:cntrl:]]*', ';nat=yes');
        }
    }

    # record routing
    if (!is_method("REGISTER|MESSAGE"))
    {
        # Record the route that this request has taken
        # so we remain in the signaling path
        xlog("L_INFO", "      Adding record route to this message");

        record_route();
    }

    route(1);
}

route[1]
{
    if (!t_relay())
    {
        xlog("L_ERR", "    Unable to relay [$rm] [$ru] to [$du], sending 500");

        sl_reply_error();
    }

    xlog("L_INFO", "    Sent [$rm] [$ru] to [$rd]");

    exit;
}

onreply_route[1]
{
    if (t_check_status("(407)|(401)"))
    {
        cache_store("memcached_callid_hash", "$ci ", "$si", 60);

        xlog("L_INFO", "      Stored call-id [$ci] as belonging to media server [$si]");
    }
}

onreply_route[nat_compensator]
{
    xlog("L_INFO ", "    Compensating reply from NATed message [$rs] [$rr]");

    if (t_check_status("(407)|(401)"))
    {
        cache_store("memcached_callid_hash", "$ci ", "$si", 60);

        xlog("L_INFO", "      Stored call-id [$ci] for NATed reply as belonging to media server [$si]");
    }
 
    if (has_body("application/sdp"))
    {
        xlog("L_INFO", "      Fixing nated reply SDP, rewritting media and origin with [$si]");

        fix_nated_sdp("10");
    }

    if (is_present_hf("Contact"))
    {
        xlog("L_INFO", "      Fixing nated reply contact header");

        fix_nated_contact();
        #search_append('Contact:.*sip:[^>[:cntrl:]]*', ';nat=yes');
    }
}

failure_route[1]
{
    if (t_was_cancelled()) 
    {
        exit;
    }

    if (t_check_status("(408)|(5[0-9][0-9])"))
    {
        xlog("L_ERR", "    Media server [$rd] replied with error [$rs] for [$ru], disabling");

        ds_mark_dst("p");

        if (ds_next_domain())
        {
            xlog("L_ERR", "    Hunting for avaliable media server...");

            xlog("L_INFO", "    Sent [$rm] [$ru] to [$rd]");

            t_relay();

            exit;
        }
    }
    else if(!cache_fetch("memcached_callid_hash", "$ci", $avp(i:55)))
    {
        xlog("L_INFO", "    Failed to route call from carrier, sending 486");

        t_reply("486", "The ratio of people to cake is too big");
    }

    exit;
}