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


public class Talker {
    public static void main(String[] args) {
	if (args.length != 2) {
	    System.out.println("Usage: Talker port host");
	    System.exit(1);
	}

	int port = Integer.parseInt(args[0]);
	String host = args[1];
        Socket s = null;
        try {
            s = new Socket(host, port);
	    Scanner in = new Scanner(System.in);
	    PrintWriter writer = new PrintWriter(s.getOutputStream());
	    System.out.println("Connection to " + host + " is open");
	    String cont = "";
	    while (!cont.matches("n.*")) {
		StringBuilder msg = new StringBuilder();
		System.out.println("Begin message; type ! by itself when done");
		String line = in.nextLine();
		while (!line.equals("!")) {
		    msg.append(line);
		    msg.append("\n");
		    line = in.nextLine();
		}

		writer.print(msg);
		writer.flush();
		System.out.println("message sent; awaiting response...");

		BufferedReader responses = 
		    new BufferedReader
		    (new InputStreamReader(s.getInputStream()));
		while (!responses.ready()){}
		while (responses.ready()) {
		    System.out.println(responses.readLine());
		}

		System.out.print("Another message? ");
		cont = in.nextLine();
	    }
        } catch (IOException ioe) {
            ioe.printStackTrace();
        } finally {
            try {
                if (s != null) {s.close();}
            } catch (IOException ioe) {
                System.out.println("error closing socket");
            }
        }
    }
}