java-http/Main.java

import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

import workers.HandleClient;

public class Main {

	public static void main(String[] args) {

		ExecutorService executor = Executors.newFixedThreadPool(3);

		int attempts = 1;

		try (ServerSocket serverSocket = new ServerSocket(8080)) {
			System.out.println("listening on socket 8080...");
			while (true) {
				// .accept() blocks until we have a client
				try (Socket client = serverSocket.accept()) {
					HandleClient task = new HandleClient(client);
					executor.submit(task);
				} catch (IOException e) {
					System.out.printf("Error accepting client: %s\n", e);
				}
			}
		} catch (IOException e) {
			System.out.printf("Error opening port (attempt %s) %s:\n", attempts, e);
			if (attempts > 3) {
				System.out.println("This isn't working. Shutting down.");
				System.exit(1);
			}
			try {
				Thread.sleep(1000);
			} catch (InterruptedException ignore) {
			}
		}
	}

}