Need Help! Multi-Threading question!

Hey guys, i would like to multi-thread a Socket connection in Java. So for example its a server which will accept more than one connection - at the moment i have: s = new ServerSocket(socket); for the socket. Any help would be great!

Quote:

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Originally Posted by pinkette

Hey guys, i would like to multi-thread a Socket connection in Java. So for example its a server which will accept more than one connection - at the moment i have: s = new ServerSocket(socket); for the socket. Any help would be great!

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When you accept() from your ServerSocket it returns a connected Socket. Start a new Thread and give it the Socket so it can communicate with the client. Your original thread can accept() other connected Sockets.

kind regards,

Jos

Go through this useful link : Socket Communications

Hope that helps,

Goldest

try {
s = new ServerSocket(socket);
} catch (IOException e) { }
while (true) {
try {

s1 = s.accept();

os = s1.getOutputStream();
dos = new DataOutputStream (os);

try{
Thread.sleep(delay);
}
catch(InterruptedException e){}

dos.writeUTF(sendString);

dos.close();
os.close();
s1.close();

} catch (IOException e)

So this is what i have, how would i incorperate it?

A few remarks:

1) stick "[code]" before your program code and "[/code]" after it for readablility reasons.
2) why do you make your thread sleep for a while?
3) I don't see any attempt to use multiple Threads.
4) Incorporate that bit of code into what?

kind regards,

Jos

Yeah, basiclly i can input a delay for the server (to simulate latency). At the moment my server will only support one client at a time - thats why id like to be able to support multiple connections. Im new to Java so dont know how to incorprate it! Many thanks.

Simply create a connhandler class in your server class
The idea is to create a new instance starting at the socket connection

Code:

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private class connHandler implements Runnable{

        private Socket client;
        public connHandler(){
            try {
                System.out.println("Waiting.....");
                client = server.accept();
                System.out.println("Connection Established");
                Thread t = new Thread(this);
                t.start();
            } catch (IOException ex) {
                Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
            }
        }

        public void run() {
              // whatever code you want to run
        }

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and just write this in the constructor:

Code:

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s = new ServerSocket(socket)
while(true){
    connHandler handler = new connHandler();
}

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Thanks for your reply. Im just confused as to where it would go. I have some variables above the code i pasted. and then the gui information. I have a few text boxes - one for the delay and one for the Socket Port. Would any of that need to change?

Would i put all my existing code inside where it says "run what ever code you want "?