pinger.java

import java.io.DataInputStream;
import java.io.OutputStream;
import java.net.Socket;

public class Pinger {


  @SuppressWarnings("deprecation")
	public static int []  ping(String ip, int port){


		try{
			Socket sk = new Socket(ip,port);

			OutputStream out = sk.getOutputStream();

			out.write(0xFE);
			out.flush();

			DataInputStream in = new DataInputStream(sk.getInputStream());
			String s = in.readLine();

			String s1 = "";
			for(int a = 0; a<s.length();a+=2){
				s1 = s1 + s.charAt(a);
			}
			String[] s2 = s1.split("§");

			sk.close();
      
    			  //return [online],[max]
			return new int [] {Integer.parseInt(s2[s2.length-2]), Integer.parseInt(s2[s2.length-1])};

		}
		catch(Exception e){
     			 //server is offline/unreachable			
			return new int []{-1,-1};
		}
	
	}
}