– Kamailio SIP Server –

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troubleshooting:nat [2007/05/28 19:27] – 200.198.196.129troubleshooting:nat [2007/05/28 21:27] (current) – external edit 127.0.0.1
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 +====== Audio only works one way, when connected with client behind nat ======
  
 +
 +
 +===== Answer  =====
 +
 +  - install mediaproxy module
 +  - install mediaproxy dispatcher
 +  - install mediaproxy server
 +
 +** Follow the install procedure and try using this openser.cfg : **
 +
 +<code c>
 +
 +#
 +
 +# ----------- global configuration parameters ------------------------
 +
 +#debug=3         # debug level (cmd line: -dddddddddd)
 +
 +#fork=yes
 +
 +#log_stderror=no        # (cmd line: -E)
 +
 +#log_facility=LOG_LOCAL0
 +
 +/* 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"
 +
 +# ------------------ module loading ----------------------------------
 +
 +# Uncomment this if you want to use SQL database
 +
 +loadmodule "/usr/local/openser/lib/openser/modules/mysql.so"
 +
 +loadmodule "/usr/local/openser/lib/openser/modules/domain.so"
 +
 +loadmodule "/usr/local/openser/lib/openser/modules/mediaproxy.so"
 +
 +loadmodule "/usr/local/openser/lib/openser/modules/uri_db.so"
 +
 +loadmodule "/usr/local/openser/lib/openser/modules/sl.so"
 +
 +loadmodule "/usr/local/openser/lib/openser/modules/tm.so"
 +
 +loadmodule "/usr/local/openser/lib/openser/modules/rr.so"
 +
 +loadmodule "/usr/local/openser/lib/openser/modules/maxfwd.so"
 +
 +loadmodule "/usr/local/openser/lib/openser/modules/usrloc.so"
 +
 +loadmodule "/usr/local/openser/lib/openser/modules/registrar.so"
 +
 +loadmodule "/usr/local/openser/lib/openser/modules/textops.so"
 +
 +# Uncomment this if you want digest authentication
 +
 +# mysql.so must be loaded !
 +
 +loadmodule "/usr/local/openser/lib/openser/modules/auth.so"
 +
 +loadmodule "/usr/local/openser/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)
 +
 +modparam("mediaproxy", "natping_interval", 60)
 +
 +modparam("registrar",  "nat_flag",         2)
 +
 +# -------------------------  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");
 +                break;
 +        };
 +        if (msg:len >=  2048 ) {
 +                sl_send_reply("513", "Message too big");
 +                break;
 +        };
 +
 +
 +        # 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);
 +                break;
 +        };
 +
 +        if (!uri==myself) {
 +                # mark routing logic in request
 +                append_hf("P-hint: outbound\r\n");
 +                route(1);
 +                break;
 +        };
 +
 +        # 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("sip.com", "subscriber")) {
 +                               www_challenge("sip.com", "0");
 +                               break;
 +                       };
 +
 +                       if (client_nat_test("3")) {
 +                               setflag(2);
 +                               force_rport();
 +                               fix_contact();
 +                       };
 +
 +                       save("location");
 +                       break;
 +
 +                };
 +
 +                lookup("aliases");
 +                if (!uri==myself) {
 +                        append_hf("P-hint: outbound alias\r\n");
 +                        route(1);
 +                        break;
 +                };
 +
 +                # native SIP destinations are handled using our USRLOC DB
 +                if (!lookup("location")) {
 +                        sl_send_reply("404", "Not Found");
 +                        break;
 +                };
 +        };
 +
 +        if (method=="INVITE") {
 +                t_on_failure("1");
 +        } else if (method == "BYE" || method == "CANCEL") {
 +                end_media_session();
 +        };
 +
 +        if (loose_route()) {
 +                if (method=="INVITE" || method=="ACK") {
 +                        use_media_proxy();
 +                };
 +                t_relay();
 +                break;
 +        };
 +
 +        if (client_nat_test("3") && !search("^Record-Route:")) {
 +                # Mark as NAT'ed
 +                force_rport();
 +                fix_contact();
 +        };
 +
 +        if (method=="INVITE") {
 +                t_on_reply("1");
 +        };
 +
 +        if (method=="INVITE" || method=="ACK") {
 +                use_media_proxy();
 +        };
 +
 +        if (!t_relay()) {
 +            if (method=="INVITE" || method=="ACK") {
 +                end_media_session();
 +            };
 +            sl_reply_error();
 +        };
 +
 +        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();
 +        };
 +}
 +
 +failure_route[1] {
 +    end_media_session();
 +}
 +
 +onreply_route[1] {
 +    if (status=~"(183)|(2[0-9][0-9])") {
 +        if (client_nat_test("1")) {
 +            fix_contact();
 +        };
 +        use_media_proxy();
 +    };
 +}
 +</code>
 +
 +===== Troubleshooting Stuff =====
 +
 +{{indexmenu>troubleshooting|js}}

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