Return request HttpModules as quickly as possible

Question

In a web site I capture the http POST request with a HttpModule as in this answer.

After reading the body of the POST in the context's BeginRequest event I would like to return as quickly as possible an "OK" response to the client.
What would be the best way to prevent further processing in IIS (7.5 integrated mode)?

Answer 1

I believe this one is the fastest:

Response.Clear();
Response.ClearHeaders();

Response.StatusCode = 200;
Response.StatusDescription = "OK";

Response.Flush();
HttpContext.Current.ApplicationInstance.CompleteRequest();