Hello,
Just a method in order to verify the accessibility of a host via PING command.
Examples With PING command
…With host name:
01 | Microsoft Windows [version 10.0.14393] |
02 | (c) 2016 Microsoft Corporation. Tous droits réservés. |
03 |
04 | C:\Users\H>ping www.google.fr |
05 |
06 | Envoi d’une requête 'ping' sur www.google.fr [77.154.221.181] avec 32 octets de données : |
07 | Réponse de 77.154.221.181 : octets=32 temps=47 ms TTL=53 |
08 | Réponse de 77.154.221.181 : octets=32 temps=319 ms TTL=53 |
09 | Réponse de 77.154.221.181 : octets=32 temps=51 ms TTL=53 |
10 |
11 | Statistiques Ping pour 77.154.221.181: |
12 | Paquets : envoyés = 3, reçus = 3, perdus = 0 (perte 0%), |
13 | Durée approximative des boucles en millisecondes : |
14 | Minimum = 47ms, Maximum = 319ms, Moyenne = 139ms |
…With IP:
01 | C:\Users\H>ping 77.154.221.181 |
02 |
03 | Envoi d’une requête 'Ping' 77.154.221.181 avec 32 octets de données : |
04 | Réponse de 77.154.221.181 : octets=32 temps=56 ms TTL=53 |
05 | Réponse de 77.154.221.181 : octets=32 temps=341 ms TTL=53 |
06 | Réponse de 77.154.221.181 : octets=32 temps=51 ms TTL=53 |
07 |
08 | Statistiques Ping pour 77.154.221.181: |
09 | Paquets : envoyés = 3, reçus = 3, perdus = 0 (perte 0%), |
10 | Durée approximative des boucles en millisecondes : |
11 | Minimum = 51ms, Maximum = 341ms, Moyenne = 149ms |
Java Source Code
01 | public static boolean isReachableByPing(String host) { |
02 | try{ |
03 | String cmd = ""; |
04 | if(System.getProperty("os.name").startsWith("Windows")) { |
05 | // For Windows |
06 | cmd = "ping -n 1 " + host; |
07 | } else { |
08 | // For Linux and OSX |
09 | cmd = "ping -c 1 " + host; |
10 | } |
11 |
12 | int nb_try = 10; |
13 | for (int i = 0; i <nb_try; i++) { |
14 | Process myProcess = Runtime.getRuntime().exec(cmd); |
15 | myProcess.waitFor(); |
16 | if(myProcess.exitValue() == 0) { |
17 | return true; |
18 | }else{ |
19 | Thread.sleep(250); // Sleep 250 ms |
20 | } |
21 | } |
22 | return false; |
23 | } catch( Exception e ) { |
24 | e.printStackTrace(); |
25 | return false; |
26 | } |
27 | } |
… main test method:
01 | public static void main(String[] args) { |
02 |
03 | if(isReachableByPing("www.google.fr")){ |
04 | System.out.println("The host 'www.google.fr' is reachable by ping command."); |
05 | }else{ |
06 | System.out.println("The host 'www.google.fr' is NOT reachable by ping command."); |
07 | } |
08 | |
09 | if(isReachableByPing("77.154.221.181")){ |
10 | System.out.println("The host '77.154.221.181' is reachable by ping command."); |
11 | }else{ |
12 | System.out.println("The host '77.154.221.181' is NOT reachable by ping command."); |
13 | } |
14 | } |
…outputs:
1 | The host 'www.google.fr' is reachable by ping command. |
2 | The host '77.154.221.181' is reachable by ping command. |
That’s all!!!
Huseyin OZVEREN