Multithread server program in Java

Question

I am trying to write a multithread program in Java where a server listens for connections from clients and spawns a thread to acommodate each client. I have:

while(true)
    {
        Socket s = server.accept();    
        ClientHandler ch = new ClientHandler(s);
        Thread t = new Thread(ch);
        t.start();  
    }

My question is: whenever it accepts a connection in

Socket s = server.accept();

and starts executing the following lines of code to create the thread etc., what happens to a request for connection from a client during that time. Is it queued somehow and it will get served in the next loop of while(true) or will it be rejected?

thanks, Nikos

Answer 1

After the accept() returns the TCP handshake is complete and you have a connected client socket (s in your code). Until the next call to accept() the OS queues pending connection requests.

You might want to check out some tutorial like this one for example.

Answer 2

I wrote a tiny http server in Java, which you can find on github. That might be a good example for you to take a look at real-world usage of Sockets and multithreading.