Preventing HttpClient 4 from following redirect

Question

I'm connecting to my AppEngine application using the Apache HttpComponents library. In order to authenticate my users, I need to pass an authentication token along to the application's login address (http://myapp.appspot.com/%5Fah/login?auth=...) and grab a cookie from the header of the response. However, the login page responds with a redirect status code, and I don't know how to stop HttpClient from following the redirect, thus thwarting me from intercepting the cookie.

Fwiw, the actual method I use to send the request is below.

private void execute(HttpClient client, HttpRequestBase method) {
    // Set up an error handler
    BasicHttpResponse errorResponse = new BasicHttpResponse(
      new ProtocolVersion("HTTP_ERROR", 1, 1), 500, "ERROR");

    try {
     // Call HttpClient execute
     client.execute(method, this.responseHandler);
    } catch (Exception e) {
     errorResponse.setReasonPhrase(e.getMessage());
     try {
      this.responseHandler.handleResponse(errorResponse);
     } catch (Exception ex) {
      // log and/or handle
     }
    }
}

How would I stop the client from following the redirect?

Thanks.

Update:

As per the solution below, I did the following after creating a DefaultHttpClient client (and before passing it to the execute method):

if (!this.followRedirect) {
    client.setRedirectHandler(new RedirectHandler() {
        public URI getLocationURI(HttpResponse response,
                HttpContext context) throws ProtocolException {
            return null;
        }

        public boolean isRedirectRequested(HttpResponse response,
                HttpContext context) {
            return false;
        }
    });
}

More verbose than it seems it needs to be, but not as difficult as I thought.

Answer 1

a quick google presented: http://hc.apache.org/httpclient-3.x/redirects.html

Answer 2

Try using a RedirectHandler. That may require extending DefaultHttpClient to return your custom implementation from createRedirectHandler().

Answer 3

You can do it with the http params:

final HttpParams params = new BasicHttpParams();
HttpClientParams.setRedirecting(params, false);

The method has no javadoc, but if you look at the source you can see it sets:

HANDLE_REDIRECTS

which controls:

Defines whether redirects should be handled automatically