Citrix Systems 9.2 manual Following policy extracts a numeric portion of a query, Abc.def.com8080

Chapter 9 Advanced Expressions: String Sets, String Patterns, and Data Formats 173

Typecasting Operations

Operation	Description
number.TYPECAST_NUM_	Converts a numeric string into decimal format. For example,
T(DECIMAL)	the following policy extracts a numeric portion of a query
	string, adds 4 to the number, and inserts an HTTP header
	named Company with a value of the resulting decimal value.
	add rewrite action myadd_action insert_http_
	header Company "http.req.url.query.typecast_
	num_t(decimal).add(4)"
	add rewrite policy myadd_policy true myadd_
	action
	bind rewrite global myadd_policy 300 END -
	type RES_DEFAULT
	For example, this policy would extract “4444” from the
	following:
	/test/file.html?4444
	The action that is associated with the policy would insert the
	following HTTP response header:
	Company: 4448\r\n
text.TYPECAST_HTTP_	Provides operations for parsing an HTTP host name as it
HOSTNAME_T	appears in HTTP data. The format for a host name is
	abc.def.com:8080.
text.TYPECAST_HTTP_	Converts text to an HTTP method.
METHOD_T	For example, suppose that you define the following pattern
	set:
	add policy patset method_pattern
	bind policy patset method_pattern TRACE
	bind policy patset method_pattern GET
	bind policy patset method_pattern POST
	bind policy patset method_pattern PUT
	bind policy patset method_pattern HEAD
	bind policy patset method_pattern OPTIONS
	bind policy patset method_pattern DELETE
	The following policy matches any HTTP request that
	contains a Host header with any of the preceding values:
	Add rewrite policy method_policy
	"http.req.header(\"Host\").typecast_http_
	method_t.contains_any(\"pat1\")" act1
text.TYPECAST_DNS_	Enables the designated text to be parsed like a DNS domain
DOMAIN_T	name in the format ab.def.com.