When will my new HttpModule's Init() method fire? - sharepoint-2010

Question

Using event handlers in my Site-scoped feature's Feature Receiver, I'm adding my HttpHandler to my configuration (I'm new to this, so the code is a bit disjointed, as I've found it here and there).
public override void FeatureActivated(SPFeatureReceiverProperties properties) {
var site = (SPSite)properties.Feature.Parent;
var webApp = site.WebApplication;
if (!webApp.IsAdministrationWebApplication) {
var modification = new SPWebConfigModification("add[#name='SharePointNinjectHttpModule']", "configuration/system.web/httpModules");
modification.Owner = "addSharePointNinjectHttpModule";
modification.Sequence = 0;
modification.Type = SPWebConfigModification.SPWebConfigModificationType.EnsureChildNode;
modification.Value = #"<add name=""SharePointNinjectHttpModule"" type=""Foo.Bar.SharePointNinjectHttpModule,Foo.Bar, Version=1.0.0.0, Culture=neutral, PublicKeyToken=****************"" />";
webApp.WebConfigModifications.Add(modification);
try {
webApp.WebService.ApplyWebConfigModifications();
webApp.Update();
}
catch (SecurityException e) {
// todo ApplyWebConfigModifications throws "Access Denied" SecurityException when activating via Site Settings
}
}
}
public override void FeatureDeactivating(SPFeatureReceiverProperties properties) {
var site = (SPSite)properties.Feature.Parent;
var webApp = site.WebApplication;
if (!webApp.IsAdministrationWebApplication) {
var oCollection = webApp.WebConfigModifications;
var iStartCount = oCollection.Count;
for (int c = iStartCount - 1; c >= 0; c--) {
SPWebConfigModification oModification = oCollection[c];
if (oModification.Owner == "addSharePointNinjectHttpModule") {
oCollection.Remove(oModification);
}
}
if (iStartCount > oCollection.Count) {
try {
webApp.WebService.ApplyWebConfigModifications();
webApp.Update();
}
catch (SecurityException e) {
// todo ApplyWebConfigModifications throws "Access Denied" SecurityException when deactivating via Site Settings
}
}
}
}
My SharePoint instance's web.config httpModules section when the feature is not active:
<httpModules>
</httpModules>
And when it is:
<httpModules>
<add name="SharePointNinjectHttpModule" type="Foo.Bar.SharePointNinjectHttpModule,Foo.Bar, Version=1.0.0.0, Culture=neutral, PublicKeyToken=****************" />
</httpModules>
So it seems like the feature receiver event handlers are doing their job (maybe I'm missing something?).
And here's the HttpModule:
using System;
using System.Web;
using Foo.Bar.Models;
using Ninject;
namespace Foo.Bar {
public class SharePointNinjectHttpModule : IHttpModule {
public void Init(HttpApplication context) {
if (Kernel == null) {
Kernel = new StandardKernel();
Kernel.Bind<IRepository>().To<Repository>();
}
}
public static IKernel Kernel { get; private set; }
public void Dispose() {}
private static IKernel GetKernel() {
IKernel result = new StandardKernel();
result.Bind<IRepository>().To<Repository>();
return result;
}
}
}
The Init() method of my HttpModule never fires. When should I expect it to fire, and why isn't that happening?

Answer 1

The following change to FeatureActivated() resolved the problem I was having:
var modification = new SPWebConfigModification("add[#name='SharePointNinjectHttpModule']", "configuration/system.webServer/modules");
I was injecting the module in the wrong section of my web.config.
Original: configuration/system.web/httpModules
Changed: configuration/system.webServer/modules
Once I made the above change, I was correctly adding the httpModule
Once I was correctly adding the httpModule, my Init() fired immediately.