160 Citrix NetScaler Policy Configuration and Reference Guide
Configuring a Pattern Set
A pattern set contains a name and string patterns. Each string pattern is assigned
an index that enables you to select the associated string from the set.
When you configure a pattern set, you can assign index values to the patterns, or
you can let the NetScaler assign the index values, as follows:
• When configuring the first pattern in the pattern set, if you omit an index
the NetScaler generates an index and issues an error if you specify an index
value for any additional patterns in the set.
• If you provide an index for the first pattern in the set, you must provide an
index for all subsequent patterns in the set.
Note: Pattern sets are case-sensitive.
http header.CONTAINS_INDEX
(pattern_set_name)Operates on all the instances of the current header
type. Evaluates all header values, and returns the
index of the matching pattern in the pattern set
name argument that is present in any instance of a
header value. This operations works with the
following prefixes:
•HTTP.REQ.COOKIE
•HTTP.REQ.HEADER("header_name")
•HTTP.RES.HEADER("header_name")
•HTTP.RES.SET_COOKIE
•HTTP.RES.SET_COOKIE2
text.EQUALS_INDEX(pattern_
set_name)Evaluates whether the target is an exact match with
any of the strings that are bound to pattern_set_
name.
If an exact match is found, this operation returns
the numerical index of the matching string.
http header.EQUALS_INDEX
(pattern_set_name)Operates on all the instances of the current header
type. Evaluates all header values and returns the
index of the matching pattern in the pattern set
name argument that is present in any instance of a
header value. This operations works with the
following prefixes:
•HTTP.REQ.COOKIE
•HTTP.REQ.HEADER("header_name")
•HTTP.RES.HEADER("header_name")
•HTTP.RES.SET_COOKIE
•HTTP.RES.SET_COOKIE2
Operators That Compare Text and HTTP Headers With a Pattern Set
Matching Operators Description