Citrix Systems 9.2 manual Typecasting Operations

170 Citrix NetScaler Policy Configuration and Reference Guide

The following table describes various typecasting operations.

Typecasting Operations

Operation	Description
text.TYPECAST_LIST_	Treats the text in an HTTP request or response body as a list
T(separator)	whose elements are delimited by the character in the
	separator argument.
	Text mode settings have no effect on the separator. For
	example, even if you set the text mode to IGNORECASE,
	and the separator is the letter “p,” an uppercase “P” is not
	treated as a separator.
	The following example creates a Rewrite action that
	constructs a list from an HTTP request body and extracts the
	fourth item in the list:
	add rewrite action myreplace_action REPLACE
	'http.req.body(100)'
	'http.req.body(100).typecast_list_
	t('?').get(4)'
	set rewrite policy myreplace_policy -action
	myreplace_action
	This policy returns the string “fourth item” from the
	following request:
	GET?first item?second item?third item?fourth
	item?
	The following example extracts the fourth item from the last
	from the list.
	add rewrite action myreplace_action1 REPLACE
	'http.req.body(100)'
	'http.req.body(100).typecast_list_
	t('?').get_reverse(4)'
	set rewrite policy myreplace_policy1 -action
	myreplace_action1
	This policy returns the string “first item” from the following
	request:
	GET?first item?second item?third item?fourth
	item
	Note that the GET_REVERSE operations ignores empty
	elements in a list.