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POOAuth with Google data API for .NET returning HTTP 400: Bad Request
 

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  1. POOAuth with Google data API for .NET returning HTTP 400: Bad Request
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    <p>I am trying to get OAuth working with the .NET library for Google Data API. Unfortunately, whenever I call GetUnauthorizedRequestToken, I get a 400 Bad Response error. Here is my code...</p> <pre><code>OAuthParameters parameters = new OAuthParameters() { ConsumerKey = DOMAIN_NAME, ConsumerSecret = SECRET_KEY, Scope = "https://docs.google.com/feeds/", Callback = Request.RawUrl, SignatureMethod = "HMAC-SHA1" }; OAuthUtil.GetUnauthorizedRequestToken(parameters); </code></pre> <p>As far as I know I am correctly following the instructions here: <a href="http://code.google.com/apis/gdata/docs/auth/oauth.html" rel="nofollow">http://code.google.com/apis/gdata/docs/auth/oauth.html</a></p> <p>Any help with this problem would be much appreciated!</p> <h3>EDIT: 9/10/2011 11:56 PM PST</h3> <p>First of all, thank you so much for the comments!</p> <p>So I've fiddled around a bit and got the Unauthorized Request Token working, but OAuth is still not really working... here is a more complete code dump :-\</p> <pre><code>string token = Request["oauth_token"]; if (!String.IsNullOrEmpty(token)) { OAuthParameters tParams = new OAuthParameters() { ConsumerKey = DOMAIN_NAME, ConsumerSecret = SECRET_KEY, Scope = S_SCOPE, Callback = S_CALLBACK, SignatureMethod = "HMAC-SHA1" }; tParams.Verifier = Request["oauth_verifier"]; tParams.Token = token; try { // http://code.google.com/apis/gdata/docs/auth/oauth.html // 1. Extract token from the callback URL //OAuthUtil.UpdateOAuthParametersFromCallback(Request.Url.Query, parameters); // 2. Upgrade to an access token OAuthUtil.GetAccessToken(tParams); string accessToken = tParams.Token; string accessTokenSecret = tParams.TokenSecret; Session["sp"] = tParams; // don't worry, we don't even get here yet return RedirectToAction("List"); } catch (System.Net.WebException ex) { // print out tons of stuff (removed for sanity) } //... and start over again } try { OAuthParameters parameters = new OAuthParameters() { ConsumerKey = DOMAIN_NAME, ConsumerSecret = SECRET_KEY, Scope = S_SCOPE, Callback = S_CALLBACK, SignatureMethod = "HMAC-SHA1" }; OAuthUtil.GetUnauthorizedRequestToken(parameters); string approvalPageUrl = OAuthUtil.CreateUserAuthorizationUrl(parameters); ViewBag.AuthUrl = approvalPageUrl; } catch (System.Net.WebException ex) { // print out more stuff } </code></pre> <p>and this is the error I am seeing (slightly modified to remove sensitive data, however I left all the symbols as-is in case someone thinks this is an encoding error):</p> <pre><code>X-Content-Type-Options = nosniff X-XSS-Protection = 1; mode=block Content-Length = 386 Cache-Control = private, max-age=0 Content-Type = text/plain; charset=UTF-8 Date = Sun, 11 Sep 2011 06:53:26 GMT Expires = Sun, 11 Sep 2011 06:53:26 GMT Server = GSE /accounts/OAuthGetAccessToken signature_invalid base_string:GET&amp;https%3A%2F%2Fwww.google.com%2Faccounts%2FOAuthGetAccessToken&amp;oauth_consumer_key%3Dmydomain.com%26oauth_nonce%3D4432dc4bd59b4ea0b133ea52cb450062%26oauth_signature_method%3DHMAC-SHA1%26oauth_timestamp%3D1315724016%26oauth_token%3D4%252FGeEWOLvQL_eGlj8zAdrzi7YPhmhS%26oauth_verifier%3DMkGYPy8qeZPRg7gLKKXsYIiM%26oauth_version%3D1.0 Callback = http://mydomain.com/auth ConsumerKey = mydomain.com ConsumerSecret = RxGavGhuXi92sy3F-Q3DKcY_ Nonce = 4430dc4bd59b4ea3b133ea52cb450062 Scope = https://docs.google.com/feeds SignatureMethod = HMAC-SHA1 Timestamp = 1315724016 Token = 4/GeAWOLvQL_eGlj1zEerzi7YPhmhS TokenSecret = Verifier = MkXLPy8qeZARq7aLKXKsYIiM </code></pre>
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    1. COby the way, I have tried with both HTTP and HTTPS protocols
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      1. USBen H
    2. COyour consumer key and callback url's are on same domain?
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      1. USParvesh
    3. CODid you enable your domain in the application settings?
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      1. USErik Philips
 

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