squid-cache.org

	By default, Squid will begin forwarding a request immediately, before
	any request body data is available. Some application servers may have
	a high per-open-connection cost and thus holding open a connection
	whilst waiting for the request body data may cause the application
	server to behave poorly.

	This option delays forwarding the request until a certain amount
	of request body data is available.

	size is specified with unit, i.e. 4 MB

	To use this feature, configure an ACL to match on the request (so
	URL, request headers, etc - not the reply headers, they're not available
	here) and an amount of data to "hold onto" before forwarding occurs.

	If the whole request body is read in before the specified limit is reached,
	the request will be forwarded.

	If size is set to "none" (the default) then the request is immediately
	forwarded without waiting for any request body to be received.