I used the topology hiding method in B2BUA Server.
Hamid Raza Hashmi hamid.hashmi006@gmail.com +92 300 968 22 85
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| ####### Global Parameters ######### | |
| #debug_mode=yes | |
| log_level=3 | |
| log_stderror=no | |
| log_facility=LOG_LOCAL0 | |
| children=8 | |
| #tcp_children=32 | |
| check_via=no | |
| rev_dns=off | |
| /* uncomment the following lines to enable debugging */ | |
| #debug_mode=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 reverse DNS on IPs */ | |
| auto_aliases=no | |
| listen=udp:127.0.0.1:5060 AS 8.8.8.8:5060 ### Customize Me | |
| #listen=tcp:127.0.0.1:5060 AS 8.8.8.8:5060 ### Customize Me | |
| #listen=tls:127.0.0.1:5060 AS 8.8.8.8:5060 ### Customize Me | |
| #tcp_max_msg_time=10 | |
| #tcp_connect_timeout=350 | |
| #sip_warning=0 | |
| #tcp_connection_lifetime = 3600 | |
| #tcp_keepalive=0 | |
| ####### Modules Section ######## | |
| #set module path | |
| mpath="/usr/local/lib64/opensips/modules/" | |
| #### SIGNALING module | |
| loadmodule "signaling.so" | |
| #### StateLess module | |
| loadmodule "sl.so" | |
| #### Transaction Module | |
| loadmodule "tm.so" | |
| modparam("tm", "fr_timeout", 15) | |
| modparam("tm", "fr_inv_timeout", 48) | |
| 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", "db_url", | |
| # "mysql://opensips:opensipsrw@localhost/opensips") # CUSTOMIZE ME | |
| #### DISPATCHER module | |
| #loadmodule "dispatcher.so" | |
| #modparam("dispatcher", "db_url","mysql://user:password@127.0.0.1/database") ### Customize Me | |
| #modparam("dispatcher", "ds_ping_method", "OPTIONS") | |
| #modparam("dispatcher", "ds_probing_mode", 0) | |
| #modparam("dispatcher", "ds_ping_interval", 30) | |
| #### MI_HTTP module | |
| #loadmodule "mi_http.so" | |
| loadmodule "proto_udp.so" | |
| #loadmodule "proto_tcp.so" | |
| #modparam("proto_tcp", "tcp_send_timeout", 2000) | |
| #modparam("proto_tcp", "tcp_max_msg_chunks", 8) | |
| #loadmodule "proto_tls.so" | |
| #loadmodule "tls_mgm.so" | |
| #modparam("tls_mgm","verify_cert", "1") | |
| #modparam("tls_mgm","require_cert", "0") | |
| #modparam("tls_mgm","tls_method", "TLSv1") | |
| #modparam("tls_mgm","certificate", "/usr/local/etc/opensips/server.pem") | |
| #modparam("tls_mgm","private_key", "/usr/local/etc/opensips/server.key") | |
| #modparam("tls_mgm","ca_list", "/usr/local/etc/opensips/server.pem") | |
| #### B2B_Entity #### | |
| loadmodule "b2b_entities.so" | |
| modparam("b2b_entities", "script_req_route", "b2b_request") | |
| modparam("b2b_entities", "script_reply_route", "b2b_reply") | |
| modparam("b2b_entities", "b2b_key_prefix", "B2B1") | |
| modparam("b2b_entities", "db_mode", 0) | |
| #modparam("b2b_entities", "replication_mode", 0) | |
| #### B2B_Entity #### | |
| loadmodule "b2b_logic.so" | |
| modparam("b2b_logic", "init_callid_hdr", "Init-CallID") | |
| loadmodule "uac_auth.so" | |
| ####### Routing Logic ######## | |
| # main request routing logic | |
| route{ | |
| xlog("L_INFO","[$fU $tU $ci $rm] Request Received from $pr:$si:$sp User-Agent:$ua"); | |
| if (!mf_process_maxfwd_header("10")) { | |
| send_reply("483","Too Many Hops"); | |
| exit; | |
| } | |
| if (has_totag()) { | |
| # handle hop-by-hop ACK (no routing required) | |
| if ( is_method("ACK") && t_check_trans() ) { | |
| xlog("L_INFO","[$fU $tU $ci $rm] Relaying Request to $ru"); | |
| t_relay(); | |
| exit; | |
| } | |
| # sequential request withing a dialog should | |
| # take the path determined by record-routing | |
| if ( !loose_route() ) { | |
| # we do record-routing for all our traffic, so we should not | |
| # receive any sequential requests without Route hdr. | |
| send_reply("404","Not here"); | |
| exit; | |
| } | |
| /* | |
| if (is_method("BYE")) { | |
| xlog("L_INFO","[$fU $tU $ci $rm] BYE "); | |
| # do accounting even if the transaction fails | |
| #o_accounting("db","failed"); | |
| } | |
| */ | |
| # route it out to whatever destination was set by loose_route() | |
| # in $du (destination URI). | |
| route(RELAY); | |
| exit; | |
| } | |
| #### INITIAL REQUESTS | |
| # CANCEL processing | |
| if (is_method("CANCEL")) { | |
| if (t_check_trans()) | |
| t_relay(); | |
| exit; | |
| } | |
| /* | |
| if ($rU==NULL) { | |
| # request with no Username in RURI | |
| send_reply("484","Address Incomplete"); | |
| exit; | |
| } | |
| */ | |
| t_check_trans(); | |
| # preloaded route checking | |
| if (loose_route()) { | |
| xlog("L_ERR","[$fU $tU $ci $rm] Attempt to route with preloaded Route's"); | |
| remove_hf("Route"); | |
| } | |
| if(is_method("REGISTER")) { | |
| $ru=$du; | |
| } else if (is_method("INVITE")) { | |
| $du="sip:{Remote Carrier IP}:5060"; | |
| $ru= "sip:" + $tU + "@{Remote Carrier IP}:5060" ; | |
| xlog("L_INFO","[$fU $tU $ci $rm] Relaying Request to $ru"); | |
| xlog("L_INFO","[$fU $tU $ci $rm] Calling function b2b_init"); | |
| b2b_init_request("top hiding"); | |
| 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"); | |
| send_reply("500","All GW are down"); | |
| } | |
| } | |
| route[b2b_request] | |
| { | |
| xlog("L_INFO","[$fU $tU $ci $rm] B2B_Request Received from $pr:$si:$sp User-Agent:$ua"); | |
| xlog("L_INFO","[$fU $tU $ci $rm] B2B_Request message $rs:$rr received \n"); | |
| } | |
| route[b2b_reply] | |
| { | |
| xlog("L_INFO","[$fU $tU $ci $rm] B2B_Reply Received from $pr:$si:$sp User-Agent:$ua"); | |
| xlog("L_INFO","[$fU $tU $ci $rm] B2B_Reply message $rs:$rr received \n"); | |
| } |
Hamid Raza Hashmi hamid.hashmi006@gmail.com +92 300 968 22 85
