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

public class CommandClient {

    public static void main(String[] args) {
	if (args.length!=2) {
	    System.out.println("java CommandClient <hostname> <port>");
	    System.exit(0);
	}
	int port=0;
	InetAddress server=null;
	try {
	    server = InetAddress.getByName(args[0]);
	    port=Integer.parseInt(args[1]);
	} catch (Exception ex) {
	    System.out.println("java EchoServer <hostname> <port>");
	    System.exit(0);
	}
	CommandClient client = new CommandClient(server, port);
	
    }

    public CommandClient (InetAddress server, int port) {
	
	try {
	    // TCP Verbindungsaufbau zum Server:
	    Socket sock = new Socket(server, port);

	    // Ein- und Ausgabestoehme des Sockets holen:
	    InputStream sockIn = sock.getInputStream();
	    OutputStream sockOut = sock.getOutputStream();

	    // Ein- und Ausgabe in entsprechendes Format umwandeln:
	    BufferedReader sockReader = new BufferedReader(new InputStreamReader(sockIn));
	    BufferedWriter sockWriter = new BufferedWriter(new OutputStreamWriter(sockOut));
	    BufferedReader keyboardReader = new BufferedReader(new InputStreamReader(System.in));

	    System.out.println("Connection Established");
	    String command="";
	    String reply="";


	    while(!command.equals("quit")) {
		System.out.print("> ");
		command=keyboardReader.readLine();

		// Befehl auf den Socket schreiben:
		sockWriter.write(command,0,command.length());
		sockWriter.newLine();

		// wichtig: sonst wird es weiter gepuffert und nicht verschickt:
		sockWriter.flush();

		// Antwort von Socket lesen:
		reply=sockReader.readLine();
		System.out.println(reply);
	    }

	    // TCP Verbindungsabbau:
	    sock.close();
	} catch (Exception ex) {
	    System.err.println("CommandClient: received exception "+ex);
	}

    }
}