[Users] Re: Restricting number of concurrent calls in openser?

Ovidiu Sas sip.nslu at gmail.com
Thu Jun 7 03:56:33 CEST 2007


Hi Axel,

You will need to add to your config the following line:
if (method=="INVITE") { setflag(4); }
and this will trigger a new dialog.


Regards,
Ovidiu Sas

On 6/6/07, Axel Dahl <junk at alf2.com> wrote:
> Hey Ovidiu, do you have a working config, I'm pretty new to openSER?
>
> The one I'm using at the moment is attached,
>
> Thanks in advance,
>
> -Axel
>
> Ovidiu Sas wrote:
> > Hi Axel,
> >
> > For each INVITE (not reINVITE) you will need to set the flag specified
> > via the params.  Like this, you will have a dialog per call.  Then you
> > can use your logic to restrict the number of concurrent calls.
> >
> >
> > Regards,
> > Ovidiu Sas
> >
> > On 6/6/07, Axel Dahl <junk at alf2.com> wrote:
> >>
> >>  Has anyone managed to restrict the number of concurrent calls on an
> >> openser
> >> box?
> >>
> >>  I'm using openser 1.1.1 and found on the web that this was needed.
> >>
> >>  I've included the dialog.so and avpops.so modules.
> >>
> >>
> >>
> >>    if ( avp_check("$DLG_count", "gt/i:10") ) {
> >>        sl_send_reply("403","no more calls accepted");
> >>        exit;
> >>     }
> >>  I'm not sure if I've configured the dialog.so module correctly, the
> >> documentation tells you what each function does, but not what the
> >> parameters
> >> mean (for example the documentation says dlg_flg default value is
> >> "none" and
> >> they give an example of it set to 4 - but what do these values mean?)
> >>
> >>  Has anyone got this working or does anyone know how I should be
> >> configuring
> >> the dialog.so module?
> >>
> >>  Thanks,
> >>
> >>  -Axel
> >> _______________________________________________
> >> Users mailing list
> >> Users at openser.org
> >> http://openser.org/cgi-bin/mailman/listinfo/users
> >>
> >>
> >
>
> #
> # $Id: openser.cfg,v 1.6 2006/02/15 18:23:46 bogdan_iancu Exp $
> #
> # simple quick-start config script
> #
>
> alias="xxxsrv2.xxx.somedomain.int:5060"
>
> # ----------- global configuration parameters ------------------------
>
> debug=0
> fork=yes
> log_stderror=no    # (cmd line: -E)
>
> # Uncomment these lines to enter debugging mode
> #fork=no
> log_stderror=yes
>
> check_via=no    # (cmd. line: -v)
> dns=no          # (cmd. line: -r)
> rev_dns=no      # (cmd. line: -R)
> port=5060
> children=4
> fifo="/tmp/openser_fifo"
>
> #
> # uncomment the following lines for TLS support
> #disable_tls = 0
> #listen = tls:your_IP:5061
> #tls_verify = 1
> #tls_require_certificate = 0
> #tls_method = TLSv1
> #tls_certificate = "/tmp/openser-1.1.0-tls/debian/openser/etc/openser/tls/user/user-cert.pem"
> #tls_private_key = "/tmp/openser-1.1.0-tls/debian/openser/etc/openser/tls/user/user-privkey.pem"
> #tls_ca_list = "/tmp/openser-1.1.0-tls/debian/openser/etc/openser/tls/user/user-calist.pem"
>
> # ------------------ module loading ----------------------------------
>
> # Uncomment this if you want to use SQL database
> #loadmodule "/usr/lib/openser/modules/mysql.so"
>
> loadmodule "/usr/lib/openser/modules/sl.so"
> loadmodule "/usr/lib/openser/modules/tm.so"
> loadmodule "/usr/lib/openser/modules/rr.so"
> loadmodule "/usr/lib/openser/modules/maxfwd.so"
> loadmodule "/usr/lib/openser/modules/usrloc.so"
> loadmodule "/usr/lib/openser/modules/registrar.so"
> loadmodule "/usr/lib/openser/modules/textops.so"
> loadmodule "/usr/lib/openser/modules/avpops.so"
> loadmodule "/usr/lib/openser/modules/dialog.so"
>
> # Uncomment this if you want digest authentication
> # mysql.so must be loaded !
> #loadmodule "/usr/lib/openser/modules/auth.so"
> #loadmodule "/usr/lib/openser/modules/auth_db.so"
>
> # ----------------- setting module-specific parameters ---------------
>
> # -- usrloc params --
>
> #modparam("usrloc", "db_mode",   0)
>
> # Uncomment this if you want to use SQL database
> # for persistent storage and comment the previous line
> #modparam("usrloc", "db_mode", 2)
>
> # -- auth params --
> # Uncomment if you are using auth module
> #
> #modparam("auth_db", "calculate_ha1", yes)
> #
> # If you set "calculate_ha1" parameter to yes (which true in this config),
> # uncomment also the following parameter)
> #
> #modparam("auth_db", "password_column", "password")
>
> # -- rr params --
> # add value to ;lr param to make some broken UAs happy
> modparam("rr", "enable_full_lr", 1)
>
> # -- dialog params --
> modparam("dialog", "enable_stats", 1)
> modparam("dialog", "dlg_flag", 4)
>
> # -------------------------  request routing logic -------------------
>
> # main routing logic
>
> route{
>
>         # initial sanity checks -- messages with
>         # max_forwards==0, or excessively long requests
>         if (!mf_process_maxfwd_header("10")) {
>                 sl_send_reply("483","Too Many Hops");
>                 exit;
>         };
>
>                 if (msg:len >=  5000 ) {
>                     sl_send_reply("513", "Message too big");
>                     exit;
>                 };
>
>    # limit number of active concurrent dialogs
>    if ( avp_check("$dlg_count", "gt/i:0") ) {
>       sl_send_reply("403","No more calls accepted!");
>       exit;
>    }
>
>
>         # we record-route all messages -- to make sure that
>         # subsequent messages will go through our proxy; that's
>         # particularly good if upstream and downstream entities
>         # use different transport protocol
>         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 (!uri==myself) {
>                 # mark routing logic in request
>                 append_hf("P-hint: outbound\r\n");
>                 # if you have some interdomain connections via TLS
>                 #if(uri=~"@tls_domain1.net") {
>                 #       t_relay("tls:domain1.net");
>                 #       exit;
>                 #} else if(uri=~"@tls_domain2.net") {
>                 #       t_relay("tls:domain2.net");
>                 #       exit;
>                 #}
>
>                 route(1);
>         };
>
>         # if the request is for other domain use UsrLoc
>         # (in case, it does not work, use the following command
>         # with proper names and addresses in it)
>         if (uri==myself) {
>
>                 if (method=="REGISTER") {
>
>                         # Uncomment this if you want to use digest authentication
>                         #if (!www_authorize("openser.org", "subscriber")) {
>                         #       www_challenge("openser.org", "0");
>                         #       exit;
>                         #};
>
>                         save("location");
>                         exit;
>                 };
>
>                 lookup("aliases");
>                 if (!uri==myself) {
>                         append_hf("P-hint: outbound alias\r\n");
>                         route(1);
>                 };
>
>                 # 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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