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@shanet
Created March 18, 2013 17:18
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A quick Java program to check if a server is up or a service on a server is up.
import java.net.InetAddress;
import java.net.Socket;
import java.io.IOException;
import java.net.UnknownHostException;
public class Monitor {
public static void main(String[] args) {
if(args.length < 2) {
System.out.println("Bad number of arguments.");
return;
}
String server = args[0];
int port = Integer.valueOf(args[1]);
try {
InetAddress ina = InetAddress.getByName(server);
if(ina.isReachable(3000)) {
System.out.println("Server is up.");
} else {
System.out.println("Server is down!");
return;
}
} catch (IOException ioe) {
ioe.printStackTrace();
return;
}
Socket socket = null;
try {
socket = new Socket(server, port);
if(socket.isConnected()) {
System.out.println("Service is up on port " + port + ".");
} else {
System.out.println("Service is down on port " + port + "!");
}
} catch (IOException ioe) {
ioe.printStackTrace();
} finally {
if(socket != null && socket.isConnected()) {
try {
socket.close();
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
}
return;
}
}
@cfpwastaken
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Not working

@shanet
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shanet commented Jul 5, 2020

Not surprising, this is from seven years ago.

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