[Mono-list] HttpRuntime initialised check?
robertj at gmx.net
Tue Aug 14 19:29:51 EDT 2007
James Fitzsimons wrote:
> Hi all,
> I am doing a bit of work trying to get Spring.NET (specifically the web
> support) running on mono. I am using 1.2.5 preview 3 of the mono runtime
> at the moment.
> The problem is that in the spring code they attempt to check if the
> HttpRuntime has been fully initialised. They do this in a rather nasty
> fashion that will only ever work on the MS .NET runtime. The question I
> have for this list is:
> Is there a "correct" way to check if the HttpRuntime has finished it's
> From this http://msdn2.microsoft.com/en-us/library/aa479328.aspx
> "The HttpRuntime object initializes a number of internal objects that
> will help carry the request out. Helper objects include the cache
> manager (the Cache object) and the internal file system monitor used to
> detect changes in the source files that form the application. The
> HttpRuntime creates the context for the request and fills it up with any
> HTTP information specific to the request. The context is represented by
> an instance of the HttpContext class."
> it looks like you could just check if the HttpContext wasn't null. Would
> that be a sufficient check?
The context will be undefined when queried from outside of a
request, so you cannot rely on it as an initialization check.
> Thanks for any advice you can provide!
> James Fitzsimons
> PS: offending Spring.NET code here:
This looks to me like a workaround either for a bug in MS.NET
or for a design glitch in String.NET, which seems to expect
to be able to do things before the first request has started.
Try first to comment out the whole #if-block or extend
the expression to ignore Mono:
if (Type.GetType ("Mono.Runtime") == null
&& HttpRuntime.AppDomainAppVirtualPath != null)
> static WebApplicationContext()
> // register for ContextRegistry.Cleared event - we need to
> discard our cache in this case
> ContextRegistry.Cleared += new
> #if NET_2_0
> if (HttpRuntime.AppDomainAppVirtualPath != null) // check if
> we're within an ASP.NET AppDomain!
> // ensure HttpRuntime has been fully initialized!
> // this is a problem,.if ASP.NET Web Administration
> Application is used. This app does not fully set up the AppDomain...
> HttpRuntime runtime =
> BindingFlags.Static | BindingFlags.NonPublic).GetValue(null);
> bool beforeFirstRequest = false;
> lock (HttpRuntime)
> beforeFirstRequest =
> BindingFlags.Instance | BindingFlags.NonPublic).
> log.Debug("BeforeFirstRequest:" + beforeFirstRequest);
> if (beforeFirstRequest)
> string firstRequestPath =
> HttpRuntime.AppDomainAppVirtualPath.TrimEnd('/') + "/dummy.context";
> log.Info("Forcing first request " +
> new SimpleWorkerRequest(firstRequestPath,
> string.Empty, new StringWriter()));
> log.Info("Successfully processed first request!");
> catch (Exception ex)
> log.Error("Failed processing first request", ex);
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