HP Traffic Director sa7220 - Manual (Page 38)

C H A P T E R 2 HP Traffic Director Server Appliances User Guide
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Each server listed for fulfillment of a RICH_HTTP service can be
configured to serve any number of specific rich expressions.
Applicable expressions are listed below:
• File type expressions, such as *.gif, or */index.html
• Path expressions, such as /home/*, or /home/images/*, or /home/
images/a*.
• Unique file expressions, such as /index.html
• Wildcard expression, such as *.
• Negation expressions, such as !*.gif or !*/index.html
RICH expressions are managed with the following commands:
config policygroup service server
port expression create
, and
config policygroup service server
port expression delete
Order of Expressions (not available on the
SA7200)
NOTE: The “*” and “!”
are allowed in
expressions, but they can
only exist at the
beginning or end of the
expression. Also, a
positive expression is
required after a not (!)
expression, otherwise the
(!) expression has no
effect. When using expressions in Layer 7 (RICH) operations, the order of
expressions is significant only when the "not" (!) operator is used.
Expressions are described below.
Expression Yields
!*.gif;* All non-GIF files
*;!*.gif All files, because after specifying “all” (*), the
!*.gif expression is never reached
!*.html;/home/* Matches all requests of the form “/home/*”
except HTML files
/home/*;!*.html Matches all files of the form “/home/*.” The
!*.html has no effect.
!/home/* No matches
!/home/*;* All matches except ones starting with "/home"