[Serusers] Media Proxy Server Problem - sr-users

21 Sep 2004


      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 > max_len ) {
                if( method!="ACK") {
                sl_send_reply("513", "Message too big");
        };
                break;
        };
            if (method=="REGISTER"||!search("^Record-Route:")) {
        if (is_from_local()) {
            # Mark as NAT'ed
                log("LOG: Someone trying to register from private IOP, rewriting
\n");
            if (client_nat_test("3")) {
                setflag(2);
                force_rport();
                fix_contact();
           };
            };
        };
        if(method=="REGISTER")
        {
                save("location");
                break;
        };
        lookup("aliases");
        #if(method=="INVITE")
        #{
                #if(!(is_from_local()||is_uri_host_local()))
                #{
                #       sl_send_reply("403","Relaying is forbidden");
                #       break;
                #};
                #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 (method == "INVITE") {
        record_route();
    };
    if (client_nat_test("3") && !search("^Record-Route:")) {
        # Mark as NAT'ed
        force_rport();
        fix_contact();
    };
if (method=="INVITE") {
        t_on_reply("1");
    };
    if (is_uri_host_local()) {
        if (!lookup("location")) {
            sl_send_reply("404", "User not found");
            break;
        };
    };
if (method=="INVITE" || method=="ACK") {
        use_media_proxy();
    };
if (!t_relay()) {
        if (method=="INVITE" || method=="ACK") {
            end_media_session();
        };
        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();
    };
}