import java.io.*;
import java.net.*;
import java.util.*;

public class ChatServer {
	public static void main(String args[]) throws IOException {
		if (args.length !=1)
			throw new IllegalArgumentException 
				("Syntax: Chat Server <port>");
		int port=Integer.parseInt(args[0]);
		ServerSocket server = new ServerSocket(port);
		while(true){
			Socket client = server.accept();
		System.out.println("Accepted from "+client.getInetAddress());
		ChatHandler handler = new ChatHandler (client);
		handler.start();
		} 
	}
}