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POFacebook does not show authentication when running under canvas
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copied!<p>I have a web site already integrated with Facebook login, using server-side authentication.</p> <p>I have an issue to turn it into an application running under Facebook.</p> <p><strong>The problem is that Facebook does not show the authentication page at all</strong></p> <p>Therefore, I am not even getting to the server authentication process for real.</p> <p>Right now, the application is running on my local machine.</p> <p>My app is defined as Facebook Application: (adding blank before localhost for site security purpose only)</p> <ul> <li>Canvas URL: http ://localhost:4300/fbopt/ </li> <li>Secure canvas URL: https ://localhost:4303/fbopt/"</li> </ul> <p>[same problem happens when running in a Sandbox, without Secure URL]</p> <p>I have a "fan page" with "Go to App" button there. Pressing a button leads me to the URL: https://apps.facebook.com/[appid]/?fb_source=timeline</p> <p>The browser starts loading the page with the frames. The lower frames makes the POST request to the URL I provided.</p> <p>My application redirects the page to the following URL:</p> <p>https://www.facebook.com/dialog/oauth?client_id=[appid]&redirect_uri=https://localhost:4303/fbopt/hook&scope=email,user_location,user_birthday</p> <p>I would expect Facebook to show up the application authentication form, with the permissions required.</p> <p>Unfortunately, this does not happen. <em>An empty page is shown within the frame, HTML is empty!</em> </p> <p>I see (from the Chrome network debugger) that the URL is indeed accessed, but the response is with HTTP 200 status (not error), but no response data. Instead, getting</p> <p>X-Frame-Options: DENY</p> <p>response header - rendering denied within frame! Why?</p> <p>When loading the URL above "manually" outside the Facebook frames structure, I do get the authentication screen with the right permissions.</p> <p>I wonder what is missing to get it work with canvas. </p> <p>Any hint on what I should add, or how to debug such a problem - will be appreciated.</p> <p>Thanks , Max</p>

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