Mega Code Archive

 

Categories / Java / Network Protocol

 

Ping a server

import java.io.DataInputStream; import java.io.PrintStream; import java.net.Socket; public class Main {   public static void main(String[] argv) throws Exception {     Socket t = new Socket("127.0.0.1", 7);     DataInputStream dis = new DataInputStream(t.getInputStream());     PrintStream ps = new PrintStream(t.getOutputStream());     ps.println("Hello");     String str = dis.readUTF();     if (str.equals("Hello"))       System.out.println("Alive!");     else       System.out.println("Dead");     t.close();   } }