Java Connect to server socket

//โปรแกรมสำหรับตรวจสอบการเปิดพอร์ตจากเว็บอื่น

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

public class NetService {
 
   public static void main(String[] args) throws Exception {
       Socket s = new Socket("202.44.204.200", 80);
       PrintStream ps = new PrintStream(s.getOutputStream());
       //String msg = "GET /netservices/checkportall.php?host=www.msu.ac.th HTTP/1.1";
       String msg = "GET /netservices/checkportall.php?host=www.yahoo.com";
       // ลองตัด GET หรือ HTTP/1.1 รอดูผลการรัน
       System.out.println("Connect 202.44.204.200 port 80...");
       System.out.println("Send : " + msg);
       ps.println(msg);     
     
       BufferedReader br = new BufferedReader(new InputStreamReader(s.getInputStream()));
       System.out.println("Wait...");
       while(true) {
           String line = br.readLine();
           if (line == null) break;
           System.out.println(line);
       }
       System.out.println("End program...");
   }          
 
   /** Creates a new instance of NetService */
   public NetService() {
   }
 
}