Re: HTTP Authentication issue

From:
=?ISO-8859-1?Q?Arne_Vajh=F8j?= <arne@vajhoej.dk>
Newsgroups:
comp.lang.java.programmer
Date:
Sun, 15 Nov 2009 19:33:51 -0500
Message-ID:
<4b009dec$0$271$14726298@news.sunsite.dk>
suru wrote:

I am using "Authenticator" to do http authentication, for URL's which
require
http authentication.

Code is as follow:

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.Authenticator;
import java.net.MalformedURLException;
import java.net.PasswordAuthentication;
import java.net.URL;

public class AuthDemo {
  public static void main(String args[]) throws MalformedURLException,
      IOException {
    String urlString = "";
    String username = "";
    String password = "";
    Authenticator.setDefault(new MyAuthenticator(username, password));
    URL url = new URL(urlString);
    InputStream content = (InputStream) url.getContent();
    BufferedReader in = new BufferedReader(new InputStreamReader
(content));
    String line;
    while ((line = in.readLine()) != null) {
      System.out.println(line);
    }
    System.out.println("Done.");
  }

  static class MyAuthenticator extends Authenticator {
    private String username, password;

    public MyAuthenticator(String user, String pass) {
      username = user;
      password = pass;
    }

    protected PasswordAuthentication getPasswordAuthentication() {
      System.out.println("Requesting Host : " + getRequestingHost());
      System.out.println("Requesting Port : " + getRequestingPort());
      System.out.println("Requesting Prompt : " + getRequestingPrompt
());
      System.out.println("Requesting Protocol: "
          + getRequestingProtocol());
      System.out.println("Requesting Scheme : " + getRequestingScheme
());
      System.out.println("Requesting Site : " + getRequestingSite());
      return new PasswordAuthentication(username, password.toCharArray
());
    }
  }
}

Even after specified proper url, username & password, i am still
getting HTTP 401 i.e. unauthorised http error.
I have observed that MyAuthenticator::getPasswordAuthentication() is
not getting called.

Setup Details:
Machine OS: Red Hat Linux
JRE: 1.5.0_05-b05

Can anyone comment this issue?


Does the site really use HTTP BASIC authentication (or one of the
more sophisticated HTTP authentication)?

This method does not work with FORM based login.

Arne

PS: Why is getPasswordAuthentication protected and not
     public ??

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