Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;

public class Main {
    /**
     * Pings a HTTP URL. This effectively sends a HEAD request and returns <code>true</code> if the response code is in
     * the 200-399 range.
     * @param url The HTTP URL to be pinged.
     * @param timeout The timeout in millis for both the connection timeout and the response read timeout. Note that
     * the total timeout is effectively two times the given timeout.
     * @return <code>true</code> if the given HTTP URL has returned response code 200-399 on a HEAD request within the
     * given timeout, otherwise <code>false</code>.
     */
    public static boolean ping(String url, int timeout) {
        // Otherwise an exception may be thrown on invalid SSL certificates:
        url = url.replaceFirst("^https", "http");

        try {
            HttpURLConnection connection = (HttpURLConnection) new URL(url).openConnection();
            connection.setConnectTimeout(timeout);
            connection.setReadTimeout(timeout);
            connection.setRequestMethod("HEAD");
            int responseCode = connection.getResponseCode();
            return (200 <= responseCode && responseCode <= 399);
        } catch (IOException exception) {
            return false;
        }
    }
}