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POGoogle Drive: Error in retrieving access and refresh tokens
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copied!<p>I am trying to access google drive from my app for WP7. But when i try to get access token in exchange for Authorization code, I get BAD REQUEST from server.</p> <p>My POST request as seen in Fidler:</p> <pre><code>POST https://accounts.google.com/o/oauth2/token HTTP/1.1 Accept: */* Referer: file:///Applications/Install/7128457C-3AF4-41C4-A606-742068B1463F/Install/ Content-Length: 240 Accept-Encoding: identity Content-Type: application/x-www-form-urlencoded User-Agent: NativeHost Host: accounts.google.com Connection: Keep-Alive Cache-Control: no-cache code=<*Authorization_Code*>& client_id=<*My_Client_Id*>& client_secret=<*My_Client_Secret*>& redirect_uri=urn%3aietf%3awg%3aoauth%3a2.0%3aoob& grant_type=authorization_code </code></pre> <p>Response from server:</p> <pre><code>HTTP/1.1 400 Bad Request Cache-Control: no-cache, no-store, max-age=0, must-revalidate Pragma: no-cache Expires: Fri, 01 Jan 1990 00:00:00 GMT Date: Sat, 07 Sep 2013 14:05:35 GMT Content-Type: application/json X-Content-Type-Options: nosniff X-Frame-Options: SAMEORIGIN X-XSS-Protection: 1; mode=block Server: GSE Alternate-Protocol: 443:quic Transfer-Encoding: chunked 21 { "error" : "invalid_request" } 0 </code></pre> <p>My Code:</p> <pre><code>StringBuilder postData = new StringBuilder(); postData.AppendFormat("{0}={1}", "code", HttpUtility.UrlEncode(AuthorizationCode)); postData.AppendFormat("&\n{0}={1}", "client_id", HttpUtility.UrlEncode(ClientId)); postData.AppendFormat("&\n{0}={1}", "client_secret", HttpUtility.UrlEncode(ClientSecret)); postData.AppendFormat("&\n{0}={1}", "redirect_uri", HttpUtility.UrlEncode("urn:ietf:wg:oauth:2.0:oob")); postData.AppendFormat("&\n{0}={1}", "grant_type", HttpUtility.UrlEncode("authorization_code")); WebClient client = new WebClient(); client.UploadStringCompleted += TokenResponse; client.Headers[HttpRequestHeader.ContentType] = "application/x-www-form-urlencoded"; client.UploadStringAsync(new Uri("https://accounts.google.com/o/oauth2/token",UriKind.Absolute), "POST", postData.ToString()); </code></pre> <p>I get this result both on emulator as well as Lumia 820. I also tried without using HttpUtility in POST request but didn't work. Any help?</p>

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