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Posted By

bmvakili on 05/21/09


Tagged

pingrandom


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pinger

 / Published in: Java
 

URL: http://snipplr.com/

Requires: Java + Unix "Ping" Program + Root Access to Ping Program Description: Takes 1 argument, which is the number of random IP Adrresses to ping to. It pings each address 1 time with a timeout of 3 seconds. It only displays the ping information when successful, otherwise just displays ".".

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  1. import java.io.*;
  2.  
  3. public class Pinger{
  4.  
  5. 	public static void main(String[] args){
  6.  
  7. 	int iter = 100;
  8. 	if(args.length>0){
  9. 		try{
  10. 			iter = Integer.parseInt(args[0]);
  11. 		}
  12. 		catch(Exception e){
  13. 			iter = 100;	
  14. 		}
  15. 	}
  16. 		java.util.Random num = new java.util.Random();
  17. 		String host = "";
  18. 		int[] subs = new int[4];
  19. 		for(int i = 0; i < iter; i++){
  20. 			host="";
  21. 			for(int j = 0; j < 4; j++){
  22.  
  23. 				subs[j] = num.nextInt(255);
  24.  
  25. 			}
  26.  
  27. 			host = subs[0]+"."+subs[1]+"."+subs[2]+"."+subs[3];
  28. 			ping(host);
  29.  
  30. 		}
  31.  
  32. 	}
  33.  
  34. 	public static void ping(String host){
  35.  
  36. 		try {
  37. 			Process ping = Runtime.getRuntime().exec("ping -c 1 -t 3 " + host);
  38. 			BufferedReader br = new BufferedReader(new InputStreamReader(ping.getInputStream()));
  39. 			StringBuilder sb = new StringBuilder();
  40. 			String line;
  41. 			while ((line = br.readLine()) != null) {
  42. 				sb.append(line);
  43. 				sb.append("\n");
  44. 			}
  45. 			if(sb.toString().matches(".*0% packet loss.*")){
  46. 				System.out.println("\nTesting ping "+host+"...");
  47. 				System.out.print(sb.toString());
  48. 			}else{
  49. 				System.out.print(".");
  50. 			}
  51. 		} catch (IOException e) {
  52. 			e.printStackTrace();
  53. 		}
  54.  
  55. 	}
  56. }

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