HTTP HEAD Request

Simple HTTP HEAD request to download only the HTTP header.

 Chilkat Java Library Downloads for Windows, Linux, and MAC OS X

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    CkHttp http = new CkHttp();

    boolean success;

    //  Any string unlocks the component for the 1st 30-days.
    success = http.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        System.out.println(http.lastErrorText());
        return;
    }

    //  Send the HEAD request and get the response.
    CkHttpResponse response;
    response = http.GetHead("http://www.chilkatsoft.com/");

    if (response == null ) {
        System.out.println(http.lastErrorText());
    }
    else {

        //  Show the HTTP response code and header received.
        System.out.println("HTTP response code: ");
        System.out.println(response.get_StatusCode());

        System.out.println("---- FULL HEADER ----");
        System.out.println(response.header());
        System.out.println("---------------------");

        //  How big will the full response be?  This is a good way to
        //  check the size of a download (if the URL is a .zip)
        System.out.println("Size of resource = "
             + response.get_ContentLength());

    }

  }
}