HttpResponse.Flush()

When calling HttpResponse.Flush(), need to remember:

• it sets "Transfer-Encoding: chunked" header if:
• it's not a "finalFlush" and
• protocol is HTTP/1.1 (which is usual for today) and
• transfer encoding is not set and
• content-length is not set and
• status code is 200.
• "finalFlush" is invoked only internally, after request processing by handler.

And what was most important for us: Output cache had been disabled when transfer encoding was set by Flush() call.