Test Server connectivity/availability with Java code

Hello experts,

I would like to have a very quick check on the connectivity/availability of a server where an IIS is installed.

I managed to use ping with 'Runtime' but that is not exactly what I want. Even if I parse the result where there's no packet lost, sending 4 packets is still taking too long.

What is a good (and quick) way to do this in java? Please provide a sample code too.

Thank you in advance!
Who is Participating?

[Webinar] Streamline your web hosting managementRegister Today



//this class is for testing the conectivity to a database
//actually it times the connection setup time
//in theory this can be used to find the closest database to the client
//date may-09-2004
package Services;

import java.io.*;

import java.net.*;

public class Pinger {
// byte[] addr1 = new byte[]{(byte)192,(byte)168,(byte)2,(byte)5};

public static long testDBConn(byte[] addr1, int port, int timeoutMs) {
//pass in a byte array with the ipv4 address, the port & the max time
out required
long start = -1; //default check value
long end = -1; //default check value
long total = -1; // default for bad connection

//make an unbound socket
Socket theSock = new Socket();

try {
InetAddress addr = InetAddress.getByAddress(addr1);

SocketAddress sockaddr = new InetSocketAddress(addr, port);

// Create the socket with a timeout
//when a timeout occurs, we will get timout exp.
//also time our connection this gets very close to the real time
start = System.currentTimeMillis();
theSock.connect(sockaddr, timeoutMs);
end = System.currentTimeMillis();
} catch (UnknownHostException e) {
start = -1;
end = -1;
} catch (SocketTimeoutException e) {
start = -1;
end = -1;
} catch (IOException e) {
start = -1;
end = -1;
} finally {
if (theSock != null) {
try {
} catch (IOException e) {

if ((start != -1) && (end != -1)) {
total = end - start;

return total; //returns -1 if timeout

Reply With Quote

Open in new window

I think you can use the above code with port 80, as you have http server
running on this host
bozerAuthor Commented:
Thank you
All Courses

From novice to tech pro — start learning today.