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POWhat is the best way to verify cookies are enabled for html 5 (mobile) website using asp.net mvc 3
 

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  1. POWhat is the best way to verify cookies are enabled for html 5 (mobile) website using asp.net mvc 3
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    <p>I know that similar questions have been asked here but I am nevertheless having trouble getting it to work. </p> <p>I am writing an html 5 website using ASP.NET MVC 3 that is targeted to mobile devices. </p> <p>I had previously asked <a href="https://stackoverflow.com/questions/10421121/how-do-you-pass-expensive-data-from-page-to-page-using-asp-net-mvc-3">another question about how to store and retrieve expensive data</a> and decided to go with Session variables.</p> <p>I finished the app and started internal testing and all was well until we realized that the web site is not working on some iPhones. After researching I came to realize that Session variables depend on cookies and that some iPhones ship with cookies disabled by default.</p> <p>Until I come up with a better solution, I want to check to see if cookies are enabled and redirect to an error page. </p> <p>I was hoping that ALL of the code to do this could be written in a base controller but I could not figure out how to do it. So instead I put the following code into the base controller...</p> <pre><code>protected void WriteCookie() { Response.Cookies.Add(new HttpCookie("cookie_test")); } protected bool CookieCheck() { return (Request.Cookies["cookie_test"] != null); } </code></pre> <p>Then in a home controller I am calling the WriteCookie method before loading the view. The view itself has javascript that is redirecting to one of two controllers / actions. The controller / view that will usually be called (because html 5 could not resolve the location) is the ChangeLocation / Index controller/action. In there I have the following code...</p> <pre><code>if (!CookieCheck()) { RedirectToAction("CookieRequired", "Error"); } </code></pre> <p>Even with cookies disabled it is not redirecting to the above error page. </p> <p>So what I am looking for is a best practices approach for solving this problem with a fairly complete code sample.</p> <p>My home controller is pretty much ALWAYS redirecting to another page (in the javascript not the controller). I have a total of about 4 controllers with a total of about 6 actions. </p> <p>My ideal would be to solve this problem completely in the base controller. If not that then I would love for it to work no matter what valid URL is typed (in other words, even if the web app is not entered through Home / Index). If not that then at least I want what I have shown in my code to work (set the cookie in Home / Index and check for it in the other controller / actions) and work even if the redirect is happening in a controller.</p>
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    1. PTQuestion
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    1. USSeth Spearman
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    1. COThe simplest way to check for cookies is via JavaScript.
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      1. POWhat is the best way to verify cookies are enabled for html 5 (mobile) website using asp.net mvc 3
      1. USKapil Khandelwal
    2. COWhat Seth said. Check using JS, if it doesn't work - location.href = 'errorpage.html'; "iPhones ship with cookies disabled by default" - really ? Apple really is different.. often in a wrong way.
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      1. POWhat is the best way to verify cookies are enabled for html 5 (mobile) website using asp.net mvc 3
      1. USEvgeni
 

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