Citrix Systems 9.2 Benutzerhandbuch

The following prefixes apply specifically to Cache-Control headers.

You can apply any of the operations for HTTP headers to Cache-Control headers. 
For more information, see 

http header.

VALUE(instance number)

An HTTP header can occur multiple times in a request 
or a response. VALUE(0) selects the value in the last 
instance, VALUE(1) selects the value in the next-to-
last instance, and so on. The instance number argument 
cannot exceed 14.

Following is an example of a request with two headers:

HTTP/1.1 200 OK\r\n

MyHeader: abc\r\n

Content-Length: 200\r\n

MyHeader: def\r\n

\r\n

The following returns "abc\r\n":

http.res.header("MyHeader").value(1) 

HTTP.REQ.CACHE_CONTROL

Returns a Cache-Control header in an HTTP 
request.

HTTP.RES.CACHE_CONTROL

Returns a Cache-Control header in an HTTP 
response.