Citrix Systems 9.2 manual Logical operations on strings

Chapter 3 Configuring Advanced Expressions: Getting Started 47

String-Based Operations for Compound Advanced Expressions

All string operations

str + str	Concatenates the value of the expression on the left of the operator with the
	value on the right. Following is an example:
	http.req.hostname + http.req.url.protocol
str + num	Concatenates the value of the expression on the left of the operator with a
	numeric value on the right. Following is an example:
	http.req.hostname + http.req.url.content_length
num + str	Concatenates the numeric value of the expression on the left side of the
	operator with a string value on the right. Following is an example:
	http.req.url.content_length + http.req.url.hostname
str + ip	Concatenates the string value of the expression on the left side of the
	operator with an IP address value on the right. Following is an example:
	http.req.hostname + 10.00.000.00
ip + str	Concatenates the IP address value of the expression on the left of the
	operator with a string value on the right.Following is an example:
	client.ip.dst + http.req.url.hostname
str1 ALT	Uses the string1 or string2 value that is derived from the expression on
str2	either side of the operator, as long as neither of these expressions is a
	compound expressions.Following is an example:
	http.req.hostname alt client.ip.src
Operations on strings that produce a result of TRUE or FALSE
str == str	Evaluates whether the strings on either side of the operator are the same.
	Following is an example:
	http.req.header("myheader") ==
	http.res.header("myheader")
str <= str	Evaluates whether the string on the left side of the operator is the same as
	the string on the right, or precedes it alphabetically.
str >= str	Evaluates whether the string on the left side of the operator is the same as
	the string on the right, or follows it alphabetically.
str < str	Evaluates whether the string on the left side of the operator precedes the
	string on the right alphabetically.
str > str	Evaluates whether the string on the left side of the operator follows the
	string on the right alphabetically.
str !!= str	Evaluates whether the strings on either side of the operator are different.

Logical operations on strings