Remove multiple forward slashes

Question

I\'ve noticed that with .NET MVC sites, you\'re able to hit URLs with multiple forward slashes, for example:

http://www.example.com//category
http://www.exam         


        

Answer 1

In the end, I have resorted to using a code behind redirect to get it working.

The issues I was having using the IIS URL Rewrites was due to the way IIS caches the redirects. When I disabled caching completely, as WouterH suggested, it worked. However, I'm not comfortable disabling caching in this way as it could introduce performance issues.

My fix was to use a code behind redirect in the Global.asax.cs file:

protected void Application_BeginRequest(object sender, EventArgs e)
{
    string requestUrl = Request.ServerVariables["REQUEST_URI"];
    string rewriteUrl = Request.ServerVariables["UNENCODED_URL"];
    if (rewriteUrl.Contains("//") && !requestUrl.Contains("//"))
        Response.RedirectPermanent(requestUrl);
}

I would have liked to use IIS URL Rewrite to get this working, unfortunately I didn't have the time to continue down that line.

Interestingly, the below method did work, however, the HTTP_X_REWRITE_URL is added by the Helicon ISAPI Rewrite which I'm running locally, but is not available on our production server.