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POIE looping infinitely when using Authorize
 

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    <p>I'm developing a Facebook app, and i only want to allow access to certain views if the visitor is authorized through Facebook. This should be a pretty simple task, and i thought is was, until i tried it out in IE. The following code works fine in Chrome and Safari. I want to use Forms authentication, and therefore i have set</p> <pre><code>&lt;forms loginUrl="~/Account/Login" timeout="2880" /&gt; </code></pre> <p>in web.config. This will direct the visitor to the following ActionResult when entering my app:</p> <pre><code> public ActionResult Login(string returnUrl) { ManagerGame2.Utilities.StaticDataContent.InitStaticData(); var oAuthClient = new FacebookOAuthClient(); oAuthClient.AppId = FacebookApplication.Current.AppId; oAuthClient.RedirectUri = new Uri(redirectUrl); var loginUri = oAuthClient.GetLoginUrl(new Dictionary&lt;string, object&gt; { { "state", returnUrl } }); return Redirect(loginUri.AbsoluteUri); } </code></pre> <p>Then the user is redirected to a Facebook page, and an access token is sent back into my OAuth ActionResult:</p> <pre><code>public ActionResult OAuth(string code, string state) { FacebookOAuthResult oauthResult; if (FacebookOAuthResult.TryParse(Request.Url, out oauthResult)) { if (oauthResult.IsSuccess) { var oAuthClient = new FacebookOAuthClient(); oAuthClient.AppId = FacebookApplication.Current.AppId; oAuthClient.AppSecret = FacebookApplication.Current.AppSecret; oAuthClient.RedirectUri = new Uri(redirectUrl); dynamic tokenResult = oAuthClient.ExchangeCodeForAccessToken(code); string accessToken = tokenResult.access_token; DateTime expiresOn = DateTime.MaxValue; if (tokenResult.ContainsKey("expires")) { DateTimeConvertor.FromUnixTime(tokenResult.expires); } FacebookClient fbClient = new FacebookClient(accessToken); dynamic me = fbClient.Get("me?fields=id,name"); long facebookID = Convert.ToInt64(me.id); Account acc = (from x in db.Account.OfType&lt;Account&gt;() where x.FaceBookID == facebookID select x).FirstOrDefault(); if (acc == null) { acc = CreateAccount(me); } acc.LatestLogin = DateTime.Now; db.Entry(acc).State = EntityState.Modified; db.SaveChanges(); MemoryUserStore.CurrentAccount = acc; UserRoleProvider usp = new UserRoleProvider(); usp.GetRolesForUser(acc.AccountID.ToString()); FormsAuthentication.SetAuthCookie(acc.AccountID.ToString(), false); if (Url.IsLocalUrl(state)) { return Redirect(state); } return RedirectToAction("Details", "Account", new { id = acc.AccountID }); } } return RedirectToAction("Index", "Account"); } </code></pre> <p>What i am trying to do here, is to first verify if the token i get back from the redirect is valid. If it is, then i pull some data about the visitor, like FacebookID and Name. I then match it with my database, to see if the user already exists, and if not, i create one. I also assign a role for the user in my custom Role provider, but i had the infinite loop problem before this. Then i set</p> <pre><code>FormsAuthentication.SetAuthCookie(acc.AccountID.ToString(), false); </code></pre> <p>and i assume this is the core of keeping track of wheter a visitor is authorized or not. As far as i understand, when the visitor is trying to call a ActionResult that requires [Authorize] then the system will check for this cookie.</p> <p>Well, could someone please clarify why the above code is working in Chrome/Safari, but keeps looping through Login and then OAuth infinitely in IE?</p> <p>My app is using MVC 3, EF Code First and Facebook C# SDK 5.0.25</p>
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    1. USBrian Rasmussen
    1. USAndreas
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    1. COBrian - what are the settings in the web.config for the Facebook Config section? I'd start there - I have your setup on several apps and it's working fine in all IE's (7 and up).
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      1. USJoey Schluchter
 

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