HTTP server detecting a broken network connection from a HTTP client

Question

I have an web application in which after making a HTTP request to the server, the client quits ( or network connection is broken) before the response was completely received by

Answer 1

No, there is nothing built in to the protocol to do this (after all, you can't tell whether the response has been received by the client itself yet, or just a downstream proxy).

Just have your client make a second request to acknowledge that it has received and stored the original response. If you don't see a timely acknowedgement, run the cleanup.

However, make sure that you understand the implications of the Two Generals' Problem.