HttpModule.Init.cs

public class MyHttpModule : IHttpModule
{
  public void Init(HttpApplication appliction)
  {
    application.BeginRequest += (sender, eventArgs) => {
      HttpContext currentContext = (HttpContext)sender;
      // Do cool stuff here, probably with the currentContext var
    };
  }
  
  public void Dispsoe()
  {
    // Dispose of stuff
  }
}