Hello,

I am building an App Engine application that reads data from www.delicious.com
using OAuth. I
am using the Signpost library (http://code.google.com/p/oauth-
signpost/). When testing on the local machine, everything works fine:
I am able to retrieve an access token and sign requests. When deployed
in the cloud however, both operations fail with the following
response:

<?xml version='1.0' encoding='UTF-8'?>
<yahoo:error xmlns:yahoo='http://yahooapis.com/v1/base.rng'
  xml:lang='en-US'>
  <yahoo:description>Please provide valid credentials. OAuth
oauth_problem="unable_to_determine_oauth_type", realm="yahooapis.com"</
yahoo:description>
</yahoo:error>
<!-- fe07.api.del.ac4.yahoo.net uncompressed/chunked Sun Jul  4
09:35:26 PDT 2010 -->

I tried adding addiitonal parameters to the request (e.g.,
oauth_version) with no success. The only explanation I can think of,
is that the URLFetch service is implemented differently in the cloud
than in the development environment, or it is a bug. I am new to the
App Engine, so any help is welcome.

I am using App Engine SDK 1.3.5

-- Dmitry Chornyi

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