private static final int NB_THREADS = 10;
String LOG_TAG = "go";
public void doScan(String subnet) {
Log.i(LOG_TAG, "Start scanning");
ExecutorService executor = Executors.newFixedThreadPool(NB_THREADS);
for (int dest = 0; dest < 255; dest++) {
String host = subnet + "." + dest;
executor.execute(pingRunnable(host));
}
Log.i(LOG_TAG, "Waiting for executor to terminate...");
executor.shutdown();
try {
executor.awaitTermination(60 * 1000, TimeUnit.MILLISECONDS);
} catch (InterruptedException ignored) {
}
Log.i(LOG_TAG, "Scan finished");
}
private Runnable pingRunnable(final String host) {
return new Runnable() {
public void run() {
try {
InetAddress inet = InetAddress.getByName(host);
boolean reachable = inet.isReachable(1000);
// if (reachable)
{
Log.d(LOG_TAG, "Pinging " + host + "...=> Result: " + reachable);
// Log.d(LOG_TAG, "=> Result: " + (reachable ?
// "reachable" : "not reachable"));
}
} catch (UnknownHostException e) {
Log.e(LOG_TAG, "Not found", e);
} catch (IOException e) {
Log.e(LOG_TAG, "IO Error", e);
}
}
};
}
2015年8月6日 星期四
[Android] ping SubNet
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