Comments on: Using OpenID within GWT

By: Aviad

Aviad — Wed, 16 Sep 2009 16:35:42 +0000

@simonwb6: From a GWT client I don’t do anything special; from the GWT server, if the user requested a page which requires authentication in order to view it, I redirect the request to the servlet.

By: simonswb6

simonswb6 — Tue, 15 Sep 2009 16:02:27 +0000

I am struggling a little with the client side piece. Are you using a straight rpc call to first get the openid url and then do the redirect? do you have an example how you would call the servelet from the gwt client?

By: beanryu

beanryu — Wed, 09 Sep 2009 21:43:20 +0000

I looked at dyuproject before I tried using openid4java. The code in the quickstart link looks easy, but I have completely no idea how to get it to work. Also, I have no idea on where I can find out what each method does except looking directly at the source code and try to figure it out myself.

By: caster

caster — Tue, 08 Sep 2009 07:24:32 +0000

Take a look at the openid java library at http://code.google.com/p/dyuproject/
Its small and easier to deploy … and works on appengine without problems

By: beanryu

beanryu — Mon, 07 Sep 2009 16:40:57 +0000

Hi Aviad, I am using openid4java-0.9.5.593, for some reason, i got the following error:
java.security.AccessControlException: access denied (java.lang.RuntimePermission modifyThreadGroup)… at the ConsumerManager.discover method, have you experienced this and found a solution? I googled it and read about it, people usually get this on GAE, but I am getting it in my local hosted mode. I am supplying the method with the string “http://myname.myopenid.com/”. Thank you for your help.

By: Aviad

Aviad — Fri, 04 Sep 2009 14:40:05 +0000

@antony.trupe: The Callback interface is implemented in your server. It is where you add your business logic for how to store your users and how to reach your login screen (so that the servlet could make the redirections correctly).
@beanryu: The servlet is a stand-alone servlet. I made it implement GWT’s RemoteService so that I could use it in a GWT environment, but it’s not necessarily what you should do.

By: antony.trupe

antony.trupe — Thu, 03 Sep 2009 02:17:19 +0000

I don’t quite follow the internal Callback interface. Where is it implemented?

By: beanryu

beanryu — Wed, 02 Sep 2009 21:34:14 +0000

Hi Aviad, thank you for posting the code. Could you please tell me how should the client talk to the servlet(I assume the code you posted is the “servlet”). Should I use GWT’s RPC or GWT’s Request and Response class? Or maybe something else? What data should be sent to the Servlet from the client? Thank you so much Aviad.

By: Aviad

Aviad — Sun, 16 Aug 2009 16:19:17 +0000

@lma: I’ll try to mail it to the address you specified. For your own safety from spam etc, I removed the email address you wrote in the comment itself..

By: lma

lma — Sun, 16 Aug 2009 15:24:37 +0000

Hi Aviad,

I’m also interested in the code for

util.HttpCookies;
util.DependencyInjection;

I’m new with OpenId and I’d like to see how does this code look like. Do you have any problem to mail it to xxx… thank you!

lma