August 2011
Intermediate to advanced
546 pages
20h 53m
English
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Undiscoverable OpenID Identifier
Another issue that you may encounter—and one that may cause you some frustration if you can’t immediately determine what the problem is—has to do with the inability to complete the discovery process for a given OpenID identifier URL.
For instance, consider the following URLs:
When entered into a browser, they would all load the same source site and would not present any challenge in determining what site we are looking for. However, when it comes to OpenID implementations, especially those of older specifications, these differences may create issues during the discovery process.
The problem of the undiscoverable OpenID identifier generally comes up with custom provider implementations of OpenID, where normalization is not being properly applied to a given identifier.
From the consumer point of view, there are two ways to resolve the issue:
If you have control over the identifier URL that is being sent to the provider (that is, if the user doesn’t enter it herself), then you can simply change the URL to exactly what the provider requires.
You can also normalize the URL yourself prior to performing discovery.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.