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POFacebook Authentication and strange redirect behaviour
 

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  1. POFacebook Authentication and strange redirect behaviour
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    <p>I'm currently testing an OAuth implementation of facebook connect using <a href="http://facebooksdk.codeplex.com" rel="noreferrer">http://facebooksdk.codeplex.com</a>.</p> <p>I've got a FacebookController with 2 simple actions called <strong>LogOn</strong> and <strong>CallBack</strong>.</p> <p>Everything works fine and the user is logged correctly into my system.</p> <p>The problem is when the CallBack action is called, something strange happens that makes a simple</p> <pre><code>return Redirect(loggedUrl); </code></pre> <p>redirecting to the correct logged url but ending with the following characters: <code>#_=_</code></p> <p>It appears that the Facebook server sends the information to my webserver using the following HTTP header:</p> <pre><code>HTTP/1.1 302 Found Cache-Control: private, no-cache, no-store, must-revalidate Expires: Sat, 01 Jan 2000 00:00:00 GMT Location: http://mywebsite.com/Facebook/CallBack/?state=1&amp;code=AQCXexr10uxANSBOu9JqrBDxqPkWbsyxM1S9ltuY9XwCXW7eGsOII329SthClxOSM_a7wJvwrXh1_O3D5I7E_nxCDTWDLpyYdMpMUfw4zMWcQ4oV2PmRkIMd2NfPYRKlkLgkurEzka1CjAF1jp8Xb3crklOB59W4IT7LZy6MEmFusuhSKacmsTcV1LAOW4uJ3K4#_=_ P3P: CP="Facebook does not have a P3P policy. Learn why here: http://fb.me/p3p" Pragma: no-cache Set-Cookie: locale=en_US; expires=Fri, 28-Oct-2011 00:09:38 GMT; path=/; domain=.facebook.com Content-Type: text/html; charset=utf-8 X-FB-Server: 10.43.103.61 X-Cnection: close Date: Fri, 21 Oct 2011 00:09:38 GMT Content-Length: 0 </code></pre> <p>As you can see we can find the <code>#_=_</code> characters at the end of the <strong>Location</strong> value.</p> <p>It's like the Redirect was taking into account the <code>#_=_</code> characters by adding them automatically to the loggedUrl.</p> <p>Even when I try with <code>return Redirect("/");</code>, the <code>#_=_</code> is added from (almost) nowhere to my redirected url...</p> <p>Any idea would be really appreciated.</p> <p>Thanks in advance for any answer.</p> <p>Regards,</p> <p>LB</p>
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