Try subprocess.call. It saves the return value of the program that was used. According to my ping manual, it returns 0 on success, 2 when pings were sent but no reply was received and any other value indicates an error. # typo error in import import subprocess for ping in range(1,10): address = “127.0.0.” + … Read more
NOTE: Solution below does not work on Windows. On linux exec a “which ping” command from the console, and set command path (of the suggested exec call) accordingly I think you want to check the exit status of the command, whereas shell_exec gives you full output (might be dangerous shall command output change from command … Read more
isReachable() will use ICMP ECHO REQUESTs if the privilege can be obtained, otherwise it will try to establish a TCP connection on port 7 (Echo) of the destination host. Thus your problem is probably a configuration issue of not enough permissions to do this on the client machine or a port 7 issue on the … Read more
function urlExists($url=NULL) { if($url == NULL) return false; $ch = curl_init($url); curl_setopt($ch, CURLOPT_TIMEOUT, 5); curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); $data = curl_exec($ch); $httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE); curl_close($ch); if($httpcode>=200 && $httpcode<300){ return true; } else { return false; } } This was grabbed from this post on how to check if a URL exists. Because … Read more
InetAddress.isReachable() according to javadoc: “.. A typical implementation will use ICMP ECHO REQUESTs if the privilege can be obtained, otherwise it will try to establish a TCP connection on port 7 (Echo) of the destination host..”. Option #1 (ICMP) usually requires administrative (root) rights.
Use a Swing Timer for repeating tasks & a SwingWorker for long running tasks. E.G. of both below – it uses a Timer to repeatedly perform a ‘long running’ task (a ping) in a SwingWorker. See Concurrency in Swing for more details on the Event Dispatch Thread and doing long running or repeating tasks in … Read more
Is this any good at all (will it do what I want?) You can do so. Another feasible way is using java.net.Socket. public static boolean pingHost(String host, int port, int timeout) { try (Socket socket = new Socket()) { socket.connect(new InetSocketAddress(host, port), timeout); return true; } catch (IOException e) { return false; // Either timeout … Read more
If you don’t need to support Windows, here’s a really concise way to do it: import os hostname = “google.com” #example response = os.system(“ping -c 1 ” + hostname) #and then check the response… if response == 0: print hostname, ‘is up!’ else: print hostname, ‘is down!’ This works because ping returns a non-zero value … Read more
See this pure Python ping by Matthew Dixon Cowles and Jens Diemer. Also, remember that Python requires root to spawn ICMP (i.e. ping) sockets in linux. import ping, socket try: ping.verbose_ping(‘www.google.com’, count=3) delay = ping.Ping(‘www.wikipedia.org’, timeout=2000).do() except socket.error, e: print “Ping Error:”, e The source code itself is easy to read, see the implementations of … Read more