internal static bool ServeCustomPageNotFoundPage(HttpContext httpContext)
{
string rawUrl = httpContext.Request.RawUrl;
string customPageNotFoundUrl = HostnameBindingsFacade.GetCustomPageNotFoundUrl();
if (string.IsNullOrEmpty(customPageNotFoundUrl))
{
return(false);
}
if (rawUrl == customPageNotFoundUrl || httpContext.Request.Url.PathAndQuery == customPageNotFoundUrl)
{
throw new HttpException(404, "'Page not found' wasn't handled. Url: '{0}'".FormatWith(rawUrl));
}
if (HttpRuntime.UsingIntegratedPipeline && customPageNotFoundUrl.StartsWith("/"))
{
httpContext.Server.TransferRequest(customPageNotFoundUrl);
return(true);
}
httpContext.Response.Redirect(customPageNotFoundUrl, true);
throw new InvalidOperationException("This code should not be reachable");
}
internal static bool IsPageNotFoundRequest()
{
HttpContext context = HttpContext.Current;
if (context == null)
{
return(false);
}
string customPageNotFoundUrl = HostnameBindingsFacade.GetCustomPageNotFoundUrl();
if (customPageNotFoundUrl.IsNullOrEmpty())
{
return(false);
}
customPageNotFoundUrl = customPageNotFoundUrl.Trim();
if (!customPageNotFoundUrl.StartsWith("/") && !customPageNotFoundUrl.Contains("://"))
{
customPageNotFoundUrl = "/" + customPageNotFoundUrl;
}
var request = context.Request;
return(request.RawUrl == customPageNotFoundUrl ||
request.Url.PathAndQuery == customPageNotFoundUrl ||
request.Url.PathAndQuery.StartsWith(customPageNotFoundUrl + "?"));
}
public IHttpHandler GetHttpHandler(RequestContext requestContext)
{
var httpContext = HttpContext.Current;
if (!HostnameBindingsFacade.ServeCustomPageNotFoundPage(httpContext))
{
throw new InvalidOperationException("Failed to redirect to 'page not found' url");
}
return(EmptyHttpHandler.Instance);
}
public override RouteData GetRouteData(HttpContextBase httpContext)
{
// Skipping the route is there's no associated "Page not found" url
if (string.IsNullOrEmpty(HostnameBindingsFacade.GetCustomPageNotFoundUrl()))
{
return(null);
}
// Skipping root request
if (httpContext.Request.RawUrl.Length == UrlUtils.PublicRootPath.Length + 1)
{
return(null);
}
return(base.GetRouteData(httpContext));
}