Question

I have cornered this error down to a redirect action call by DotNetOpenAuth(http://www.dotnetopenauth.net/)

Basically I have implemented the example here

http://www.dotnetopenauth.net/developers/code-snippets/programmatic-openid-relying-party/

In my application while running locally I hit this line

return request.RedirectingResponse.AsActionResult();

At this point it completes this action and then the azure dev fabric load balancer crashes.

Here is where it gets strange. If I debug line by line into the redirect action it will not crash.

Has anyone seen anything like this that can give me some direction on a fix?

@dthorpe points out that I should tell you all I have tested this by deploying to the production environment and this does seem to work.

Answer 1

I have a fix. It’s a slight hack, but it does work and you don’t have to fake anything.

Change this:

return request.RedirectingResponse.AsActionResult();

to this:

string location = request.RedirectingResponse.Headers["Location"];
return Redirect(location);

This gets around the issue and allows authentication to proceed. I’ll allow someone brighter than myself to give a detailed explanation as to why this is the case.

Hope this helps!