I'm happy to note that my (newly released) library lua-http covers almost all of these concerns in it's default configuration, with even cleaner semantics aroun

I'm happy to note that my (newly released) library lua-http covers almost all of these concerns in it's default configuration, with even cleaner semantics around the read/write timeouts. The only thing missing is an equivalent of the "Idle" timeout mentioned in the OP: I'm curious how you think it should behave in the HTTP 1.1 pipelining case, I guess only counting the time that the connection is totally idle?