DotNetOpenAuth.Messaging.ProtocolException: Unexpected response Content-Type text/html

[Carlos Ernesto Ríos Ochoa]

Hi! I get this Exception DotNetOpenAuth.Messaging.ProtocolException, Anyone have any idea

[ProtocolException: Unexpected response Content-Type text/html]
   DotNetOpenAuth.Messaging.ErrorUtilities.VerifyProtocol(Boolean condition, String unformattedMessage, Object[] args) +373
   DotNetOpenAuth.Messaging.ErrorUtilities.ThrowProtocol(String unformattedMessage, Object[] args) +69
   DotNetOpenAuth.OAuth2.ChannelElements.OAuth2ClientChannel.ReadFromResponseCore(IncomingWebResponse response) +443
   DotNetOpenAuth.Messaging.Channel.RequestCore(IDirectedProtocolMessage request) +603

[Dylan Beattie]

Check your server isn't returning a 500 Internal Server Error. ASP.NET returns error pages as text/html even if your request was for a different Content-Type, which means most web service clients (including DotNetOpenAuth) don't recognise the response since they asked for JSON or XML and got back an HTML page instead.

Using a proxy such as Fiddler (http://fiddler2.com/) will show you what's actually being sent and received by your client and server - check out http://fiddler2.com/documentation/Observe-Traffic/Troubleshooting/NoTrafficToLocalhost to see how to capture localhost traffic with it.

-D-

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