package j2;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.Socket;
import java.net.UnknownHostException;
public class EchoClient {
    public static void main(String[] args) {
        // ソケットや入出力用のストリームの宣言
        Socket socket = null;
        DataOutputStream dos = null;
        BufferedReader isbr = null;
	BufferedReader stdinbr = null;
        
        // ポート9999番を開く
    	String host = "localhost";
        try {
            socket = new Socket(host, 9999);
            dos = new DataOutputStream(socket.getOutputStream());
            isbr = new BufferedReader(new InputStreamReader(socket.getInputStream()));
	    stdinbr = new BufferedReader(new InputStreamReader(System.in));
        } catch (UnknownHostException e) {
            System.err.println("Don't know about host: "+host);
        } catch (IOException e) {
            System.err.println("Couldn't get I/O for the connection to: "+host);
        }

        // サーバーにメッセージを送る
        if (socket != null && dos != null && isbr != null) {
            try {
                // メッセージを送ります
                dos.writeBytes("HELLO\n");

                // サーバーからのメッセージを受け取り画面に表示します
                String line;
                while ((line = isbr.readLine()) != null) {
                    System.out.println("Server: " + line);
                    if (line.equals("quit")) break;
                    
                    String s = stdinbr.readLine();
		    System.out.println(s);
		    dos.writeBytes(s+"\n");
                }

                // 開いたソケットなどをクローズ
                dos.close();
                isbr.close();
                socket.close();
            } catch (UnknownHostException e) {
                System.err.println("Trying to connect to unknown host: " + e);
            } catch (IOException e) {
                System.err.println("IOException: " + e);
            }
        }
    }
}