Client-Server-Client communication using Sockets

Question

I am building a small chat application in which client A wants to send something to client C with server B in between. First of all is this a correct approach for the proble

Answer 1

If I am not mistaken, you must be having a problem with receiving a message from the Server or SSocket class. What happens with your code is that when you send a message from the client to the server the Server class receives your messages also gives an echo of the message in the client. However, when you send a message from the Server class, you don't get any messages in the Client Class.

To get this to work, you would have to modify your code in the following fashion:

SSocket Class

String line = null;
while (true) {
    line = dIn.readUTF();
    System.out.println("Recievd the line----" + line);
    dOut.writeUTF(line + " Comming back from the server");
    dOut.flush();
    System.out.println("waiting for the next line....");
}

You should add these lines:

String Line2 = take.nextLine(); //The user types a message for the client
dOut.writeUTF(Line2 + " Comming back from the server"); //The message is sent to the client

Replace the while loop with this one and it will work fine.

while (true) {       
    line = dIn.readUTF(); //Takes the msg from the client
    System.out.println("Recievd the line----" + line); //Prints the taken message

    String Line2 = take.nextLine(); //The user types a message for the client
    dOut.writeUTF(Line2 + " Comming back from the server"); //The message is sent to the client
    dOut.flush();
    System.out.println("waiting for the next line....");
}