Citrix Systems 9.2 manual Operations That Evaluate Cache-Control Headers, 127

Chapter 6 Advanced Expressions: Parsing HTTP, TCP, and UDP Data 127

In addition, the following operations identify specific types of Cache-Control headers. See RFC 2616 for details on these header types.

Operations That Evaluate Cache-Control Headers

HTTP Header Operation	Description
Cache-Control header.	Returns as a text value the name of the Cache-Control
NAME(integer)	header that corresponds to the nth component in a
	name-value list, as specified by integer.
	The index of the name-value component is 0-based. If
	the index that is specified by the integer argument is
	greater than the number of components in the list, a
	zero-length text object is returned.
	Following is an example:
	http.req.cache_control.name(3).
	contains("some_text")
Cache-Control header.	Returns a Boolean TRUE if the Cache-Control header
IS_INVALID	is not present in the request or response.
	Following is an example:
	http.req.cache_control.is_invalid
Cache-Control header.	Returns a Boolean TRUE if the Cache-Control header
IS_PRIVATE	has the value Private.
	Following is an example:
	http.req.cache_control.is_private
Cache-Control header.	Returns a Boolean TRUE if the Cache-Control header
IS_PUBLIC	has the value Private.
	Following is an example:
	http.req.cache_control.is_public
Cache-Control header.	Returns a Boolean TRUE if the Cache-Control header
IS_NO_STORE	has the value No-Store.
	Following is an example:
	http.req.cache_control.is_no_store
Cache-Control header.	Returns a Boolean TRUE if the Cache-Control header
IS_NO_CACHE	has the value No-Cache.
	Following is an example:
	http.req.cache_control.is_no_cache
Cache-Control header.	Returns a Boolean TRUE if the Cache-Control header
IS_MAX_AGE	has the value Max-Age.
	Following is an example:
	http.req.cache_control.is_max_age