This ACL determines which retriable ICAP transactions are
	retried. Transactions that received a complete ICAP response
	and did not have to consume or produce HTTP bodies to receive
	that response are usually retriable.

	icap_retry allow|deny [!]aclname ...

	Squid automatically retries some ICAP I/O timeouts and errors
	due to persistent connection race conditions.

	See also: icap_retry_limit