HttpModule: How to handle HttpApplication errors without HttpContext?

I've been finding a particularly interesting situation. I have a generic error handling routine implemented within a HttpModule , and recently I noticed a strange behavior: The HttpApplication.Error event is triggered, but HttpContext.Current is null .

This is the relevant part of HttpModule:

public void Init(HttpApplication context)
{
    context.Error += context_Error;
    context.PostMapRequestHandler += context_PostMapRequestHandler;

}

void context_PostMapRequestHandler(object sender, EventArgs e)
{
    var aux = HttpContext.Current.Handler as Page;
    if (aux != null) aux.Error += context_Error;
}

void context_Error(object sender, EventArgs e)
{
    _localLog.Add("HttpApplication error handler reached.");
    try
    {
        if (HttpContext.Current == null)
        {
            _localLog.Add("No HttpContext.");
        }
        else
        {
            var objError = HttpContext.Current.Server.GetLastError();

            if (objError == null)
            {
                _localLog.Add("GetLastError(): no error.");
                return;
            }

            //[Proper error handler follows here...]
        }
    }
}

And the event appears as follows:

Onepossibilityisthatexceptionisbeinggeneratedinanthreadoutofcontext.

Anyway,howcanIinterceptthiserrorinordertotreatit?

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