– Kamailio SIP Server –

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old-content:nat [2005/11/14 01:00] (current)
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 +====== Audio only work one way, when connected with client behind nat ======
  
 +====== Answer : ======
 +
 +  - install mediaproxy module
 +  - install mediaproxy dispacter
 +  - 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>​