package com.interview.basics.java.socket;

/**
 * Created_By: stefanie
 * Date: 15-1-3
 * Time: 下午10:49
 */
import java.io.*;
import java.net.*;

public class KnockKnockClient {
    public static void main(String[] args) throws IOException {

        if (args.length != 2) {
            System.err.println(
                    "Usage: java EchoClient <host name> <port number>");
            System.exit(1);
        }

        String hostName = args[0];
        int portNumber = Integer.parseInt(args[1]);

        try (
                Socket kkSocket = new Socket(hostName, portNumber);
                PrintWriter out = new PrintWriter(kkSocket.getOutputStream(), true);
                BufferedReader in = new BufferedReader(new InputStreamReader(kkSocket.getInputStream()));
        ) {
            BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in));
            String fromServer;
            String fromUser;

            while ((fromServer = in.readLine()) != null) {
                System.out.println("Server: " + fromServer);
                if (fromServer.equals("Bye."))
                    break;

                fromUser = stdIn.readLine();
                if (fromUser != null) {
                    System.out.println("Client: " + fromUser);
                    out.println(fromUser);
                }
            }
        } catch (UnknownHostException e) {
            System.err.println("Don't know about host " + hostName);
            System.exit(1);
        } catch (IOException e) {
            System.err.println("Couldn't get I/O for the connection to " + hostName);
            System.exit(1);
        }
    }
}