Hi,

I am using the following routing configuration for testing Ser as a presence server only.
The aim is to route all register, invite and other audio related messages to the main SIP  and RTP proxy while keeping presence messages to SER.
But there are some configuration parts that I don't understand:

1- if I remove the following lines from route[2] , client can't register through Ser.

               if (!t_newtran()) {
                        log(1, "newtran error\n");
                        sl_reply_error();
                        break;
                };

2- What is the meaning of :  if (uri==myself) {  ?
I just commented this out and it seems to work.

3- Can anyone explain me the meaning of following lines:

#       if (!method=="REGISTER") record_route();

#       if (loose_route()) {
#               # mark routing logic in request
#               append_hf("P-hint: rr-enforced\r\n");
#               route(1);
#               break;
#       };


Thanks,
İlker

Below is my full routing configuration:


# main routing logic

route{
        # XML RPC
        if (method == "POST" ||  method == "GET") {
                create_via();
                dispatch_rpc();
                break;
        }

        # 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 ) {
                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 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 (!lookup_domain("To")) {
#xlog("L_ERR", "URI=MYSELF\n");
#xlog("L_ERR", "to: %tu from: %fu\n");
#               log(1, "Unknown domain - message should be forwarded?");
#                       route(1);
#                       break;
#               }
#       }

         if (method=="REGISTER") {
xlog("L_ERR", "REGISTER\n");
xlog("L_ERR", "to: %tu from: %fu\n");
            append_hf("P-hint: outbound\r\n");
            save_noreply("location");
            route(2);
            break;
         };
         if (method=="INVITE") {
xlog("L_ERR", "INVITE\n");
xlog("L_ERR", "to: %tu from: %fu\n");
if (!lookup("location")) {
        route(2);
        break;
           };
if (lookup("location")) {
        route(1);
        break;
           };
         };
         if (method=="MESSAGE") {
xlog("L_ERR", "MESSAGE\n");
xlog("L_ERR", "to: %tu from: %fu\n");
           if (!lookup("location")) {
                sl_send_reply("404","Not found");
                break;
            };
            route(1);
            break;
         };
         if (method=="NOTIFY") {
xlog("L_ERR", "NOTIFY\n");
xlog("L_ERR", "to: %tu from: %fu\n");
           if (!lookup("location")) {
                sl_send_reply("404","Not found");
                break;
            };
            route(1);
            break;
         };
        if (method=="SUBSCRIBE") {
xlog("L_ERR", "SUBSCRIBE\n");
xlog("L_ERR", "to: %tu from: %fu\n");
                if (!t_newtran()) { # creates a new transaction
                        sl_reply_error();
                        break;
                };
                handle_subscription("registrar");
                break;
        };
        if (method=="PUBLISH") {
xlog("L_ERR", "PUBLISH\n");
xlog("L_ERR", "to: %tu from: %fu\n");
                if (!t_newtran()) {
                   sl_reply_error();
                   break;
                };
                handle_publish("registrar");
                break;
        };
xlog("L_ERR", "OTHER\n");
xlog("L_ERR", "to: %tu from: %fu\n");
if (!lookup("location")) {
        route(2);
        break;
           };
if (lookup("location")) {
        route(1);
        break;
           };
#         append_hf("P-hint: outbound\r\n");
#       route(2);
#       break;
}


route[1]
{
       xlog("L_INFO","t_relay()\n");
        if (!t_relay()) {
                sl_reply_error();
        };
}

route[2]
{
                if (!t_newtran()) {
xlog("L_ERR", "newtran error ?????\n");
                        log(1, "newtran error\n");
                        sl_reply_error();
                        break;
                };
        if (!t_forward_nonack("10.100.200.97", 5060)) {
          sl_reply_error();
        };
xlog("L_ERR", "FORWARD\n");
}