This week's book giveaway is in the OCAJP forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide 1Z0-808 and have Jeanne Boyarsky & Scott Selikoff on-line! See this thread for details.
Since the servlet container gets the original request, creates/assigns a Thread to handle it, interprets it as a HttpServletRequest object, and calls the service method of the target, of course it knows which requests are still pending. How could it not? Bill