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Problem with a network
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Babulesnik Offline
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Post: #1
Problem with a network
I want to transfer the data to myself, but the program hangs up after button click "KB_DOWN"

SockAddr my_adres,serv_adres;
Socket my_socket;

my_socket.createUdp();
my_adres.port(1234);
my_adres.ip("127.0.0.1");
serv_adres.port(1234);
serv_adres.ip("127.0.0.1");

if (Kb.bp(KB_ENTER))
{
...
my_socket.send(my_adres,text_enter,SIZE(text_enter));
}

if (Kb.bp(KB_DOWN))
{
Str rcv_text;
Int r_in=my_socket.receive(my_adres,&rcv_text,SIZE(rcv_text));
if( r_in>0) rezultat=rcv_text;
}
02-06-2011 02:12 PM
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PRG3D Offline
Member

Post: #2
RE: Problem with a network
In tutorial (Socket.cpp) is:

Code:
// create this instance socket (internet connection)
   {
      // try to initialize socket on one of the ports starting from BASE_PORT
      // some ports will not be accessible because other program instances may have already reserved them
      FREP(50)
      {
            sock.createUdp();
         if(sock.bind(SockAddr().setServer(BASE_PORT+i)))break; // 50 attempts, stops on first usable port
      }

      sock.block(false); // set non-blocking mode, this will disable waiting when receiving data through socket
   }

   // make contact with other sockets created by other program instances
   {
      SockAddr addr;        // socket address
      addr.ip("127.0.0.1"); // set    address ip to 'localhost', which is your computer
      FREP(50)              // now check 50 ports where possibly other instances of the tutorial have created a socket
      {
         addr.port(BASE_PORT+i);      // set port of the address
         if(addr.port()!=sock.port()) // if it's on a different port than our socket (which means that it's not us)
            sock.send(addr,NULL,0);   // send empty data just to contact the other socket to let it know that we exist
      }
   }
(This post was last modified: 02-06-2011 04:23 PM by PRG3D.)
02-06-2011 04:23 PM
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Babulesnik Offline
Member

Post: #3
RE: Problem with a network
(02-06-2011 04:23 PM)PRG3D Wrote:  In tutorial (Socket.cpp) is:

Code:
// create this instance socket (internet connection)
   {
      // try to initialize socket on one of the ports starting from BASE_PORT
      // some ports will not be accessible because other program instances may have already reserved them
      FREP(50)
      {
            sock.createUdp();
         if(sock.bind(SockAddr().setServer(BASE_PORT+i)))break; // 50 attempts, stops on first usable port
      }

      sock.block(false); // set non-blocking mode, this will disable waiting when receiving data through socket
   }

   // make contact with other sockets created by other program instances
   {
      SockAddr addr;        // socket address
      addr.ip("127.0.0.1"); // set    address ip to 'localhost', which is your computer
      FREP(50)              // now check 50 ports where possibly other instances of the tutorial have created a socket
      {
         addr.port(BASE_PORT+i);      // set port of the address
         if(addr.port()!=sock.port()) // if it's on a different port than our socket (which means that it's not us)
            sock.send(addr,NULL,0);   // send empty data just to contact the other socket to let it know that we exist
      }
   }

I did this code on an example socket.cpp. I need to learn why my code does not worksmile
02-06-2011 04:49 PM
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Driklyn Offline
Member

Post: #4
RE: Problem with a network
You shouldn't have that KB_DOWN if statement. Look in the Update function of Socket.cpp for how you should receive data.
02-06-2011 07:31 PM
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Babulesnik Offline
Member

Post: #5
RE: Problem with a network
(02-06-2011 07:31 PM)Driklyn Wrote:  You shouldn't have that KB_DOWN if statement. Look in the Update function of Socket.cpp for how you should receive data.

I do as in an example-same result.

for(SockAddr addr;wink
{
Str rcv_text;
Int r_in=my_socket.receive(my_adres,&rcv_text,SIZE(rcv_text));
if( r_in<0)break;
// lobbi_chat.getText("chat_list").set(chat_text.insert(0,rcv_text+"\n"));
rezultat=rcv_text;
}
02-06-2011 08:00 PM
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Driklyn Offline
Member

Post: #6
RE: Problem with a network
Try editing Socket.cpp, replacing a few lines at a time with your code, testing often to see when it stops working. This should tell you where your problem(s) are.
02-06-2011 08:39 PM
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