[OpenSIPS-Users] Using b2bua top hiding plus dispatcher module
Anca Vamanu
anca at opensips.org
Tue Oct 12 11:22:47 CEST 2010
Hi David,
The only thing that won't work as you like is the append_hf - it won't
work as you like since the b2bua module won't see that header. You need
to do that for the new request generated by the b2bua and put that code
in the local_route.
Regards,
--
Anca Vamanu
www.voice-system.ro
On 10/11/2010 01:48 PM, David Santiago wrote:
> Hi all,
>
> After cleaning up the initialization problems in the b2bua related
> modules I'm testing a configuration I want to use in order to enable
> the "top hiding" scenario, plus using the dispatcher module so I can
> configure the internal jain slee server that receives the requests
> from the opensips proxy, like this:
>
> VOIP PROVIDER<-------> OPENSIPS<-------> INTERNAL JAIN SLEE SERVER
>
> I will write here the configuration I'm using, taken from the
> configuration example available, that results in the INVITEs received
> from the VOIP PROVIDER being sent by OPENSIPS to itself (to its public
> address, in particular), ad infinitum.
>
> The modparam("dispatcher", "list_file",
> "/opt/opensipsnotls/etc/opensips/dispatcher.list") entry points to the
> file required by the dispatcher module to determine the ip and port
> where the internal jain slee server is running. Furthermore, our
> service implementation requires the addition of the
> P-Preferred-Service header, which is done with append_hf().
>
> Any hint would be appreciated. Thanks in advance!
>
>
>
> # Debugging mode:
> debug=9
> memlog=6
> fork=yes
> auto_aliases=no
> log_stderror=no
>
> disable_dns_blacklist=yes
>
> listen=10.122.54.163:5060 # private opensips ip
> # alias=OSIPS_REALM
> #port=OSIPS_PORT
>
>
> sip_warning=0
> #server_header="SRV_SIGNATURE"
> #user_agent_header="PP_USER_AGENT"
>
> #mhomed=yes
> #memlog=2
> check_via=no
> dns=off
> rev_dns=off
> children=8
> disable_tcp=yes
> log_facility=LOG_LOCAL0
> # for more info: opensips -h
>
> # ------------------ module loading ----------------------------------
>
> mpath="/opt/opensipsnotls/lib/opensips/modules/"
>
> #loadmodule "db_mysql.so"
> #loadmodule "xlog.so"
> loadmodule "textops.so"
> loadmodule "maxfwd.so"
> loadmodule "rr.so"
> loadmodule "sl.so"
> loadmodule "tm.so"
> loadmodule "signaling.so"
> loadmodule "b2b_entities.so"
> loadmodule "b2b_logic.so"
> loadmodule "usrloc.so"
> loadmodule "registrar.so"
> loadmodule "mi_fifo.so"
> loadmodule "dispatcher.so"
>
> # ----------------- setting module-specific parameters ---------------
> modparam("mi_fifo", "fifo_name", "/tmp/opensips_fifo")
>
>
> #modparam("usrloc", "db_url", "mysql://opensips:opensipsrw@localhost/opensips")
> #modparam("usrloc", "db_mode", 2)
>
> modparam("tm", "pass_provisional_replies", 1)
>
> modparam("dispatcher", "list_file",
> "/opt/opensipsnotls/etc/opensips/dispatcher.list")
>
> modparam("b2b_entities", "server_address",
> "sip:MY_OPENSIPS_PUBLIC_IP_GOES_HERE:5060")
>
>
> #modparam("b2b_logic", "script_scenario",
> "/home/anca/work/opensips/modules/b2b_logic/scenario_script.xml")
> #modparam("b2b_logic", "extern_scenario",
> "/home/anca/work/opensips/modules/b2b_logic/scenario_extern.xml")
> modparam("b2b_entities", "script_req_route", "b2b_request")
> modparam("b2b_entities", "script_reply_route", "b2b_reply")
>
> route[b2b_request] {
> xlog("b2b_request ($ci)\n");
> }
>
>
> route[b2b_reply] {
> xlog("b2b_reply ($ci)\n");
> }
>
>
> route {
>
> xlog("mozaa - Here we go...");
>
> if (!mf_process_maxfwd_header("10")) {
> sl_send_reply("483","Too Many Hops");
> exit;
> };
>
> if (msg:len>= 2380 ) {
> sl_send_reply("513", "Message too big");
> exit;
> };
>
> if (!method=="REGISTER")
> record_route();
>
> # subsequent messages withing a dialog should take the
> # path determined by record-routing
> if (loose_route()) {
> # mark routing logic in request
> append_hf("P-hint: rr-enforced\r\n");
> route(1);
> };
>
> if(is_method("INVITE")&& /* only for Invite messages from bob*/
> !(src_ip == "10.122.54.163"&& src_port ==5060)) /* skip
> Invite messages generated by the server*/
> {
> # DO NOT call t_newtran() on this request -> it will result in the
> transaction never being deleted
> ##b2b_init_request("prepaid", "sip:320 at opensips.org:5070",
> "sip:321 at opensips.org:5070");
>
> xlog("mozaa ft - [$ft]");
> xlog("mozaa fu - [$fu]");
> xlog("mozaa tt - [$tt]");
> xlog("mozaa tu - [$tu]");
> xlog("mozaa du - [$du]");
> xlog("mozaa si - [$si]");
>
> $var(to) = $tu;
> $var(to) = $(var(to){s.substr,4,0});
> $var(to) = $(var(to){s.select,0,@});
> $var(proxy_public_addr) = $(var(to){s.select,1,@});
>
> xlog("mozaa to - [$var(to)]");
>
> xlog("mozaa contact - $hdr(Contact)");
>
> $var(from) = $fu;
> $var(from) = $(var(from){s.substr,4,0});
>
> if($var(to)=="THE_NUMBER_REGISTERED_IN_MY_VOIP_PROVIDER_GOES_HERE") {
> xlog("mozaa x - SPAIN");
> if (
> subst('/^From:(.*)sip:[^@]*@[a-zA-Z0-9.]+(.*)$/From:\1sip:34$var(from)\2/ig')
> ) {
> xlog("mozaa from modified!");
> };
> append_hf("P-Preferred-Service: OneService\r\n");
> } else {
> xlog("mozaa x - USA");
> append_hf("P-Preferred-Service: AnotherService\r\n");
> }
>
> ds_select_dst("1", "0");
>
> xlog("mozaa - Launching top hiding scenario for du = $du");
>
> b2b_init_request("top hiding");
> exit;
> };
>
> if (!uri==myself) {
> # mark routing logic in request
> append_hf("P-hint: outbound\r\n");
> route(1);
> };
>
>
> if (uri==myself) {
>
> if (method=="REGISTER") {
> save("location");
> exit;
> };
>
> # native SIP destinations are handled using our USRLOC DB
> if (!lookup("location")) {
> sl_send_reply("404", "Not Found");
> exit;
> };
> append_hf("P-hint: usrloc applied\r\n");
> };
>
> route(1);
> }
>
>
> route[1] {
> # send it out now; use stateful forwarding as it works reliably
> # even for UDP2TCP
>
> if (!t_relay()) {
> sl_reply_error();
> };
> exit;
> }
>
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