Java tutorial
import java.net.InetAddress; import java.net.ServerSocket; import java.net.Socket; public class Main { public static void main(String[] args) throws Exception { ServerSocket server = new ServerSocket(8123); while (true) { Socket sock = server.accept(); InetAddress addr = sock.getInetAddress(); System.out.println("Connection made to " + addr.getHostName() + " (" + addr.getHostAddress() + ")"); Thread.sleep(5000); sock.close(); } } }