Cookie Parameter Regex

This capability requires Rules Engine - Advanced Rules which must be purchased separately. Contact your CDN account manager to activate it.

Category: Request

Purpose: Identifies requests by whether they contain a cookie whose value matches the pattern defined by a Perl-compatible regular expressionThis type of value is interpreted as a regular expression that defines a pattern of characters..

Key information:

• Cookie name:

  • Special characters, including an asterisk, are not supported when specifying a cookie name. This means that only exact cookie name matches are eligible for comparison.
  • Only a single cookie name may be specified per instance of this match condition.
  • Cookie name comparisons are case-insensitive.

• Cookie value:

  • A value may be defined using any combination of numbers, letters, and/or symbols. This value will be interpreted as a regular expression. Regular expressions are useful for defining a pattern of characters.

    Although regular expressions are quite powerful and can generate flexible solutions, it is strongly recommended that a regular expression statement be constructed, or at the very least proofed, by a developer on your team. This will ensure that the desired behavior will take place.
    
    For example, specifying a ".*" regular expression will match all requests, since the specified pattern matches 0 or more characters. A clearer way to match all requests is through the use of the Always match condition.

  • The Ignore Case option determines whether a case-sensitive comparison will be made against the request's cookie value.

• The Result option determines the conditions under which this match condition will be satisfied.

  • Match: Requires a request to contain the specified cookie with a value that matches the regular expression defined in this match condition.

  • Does Not Match: Requires that the request satisfy either of the following criteria:

    • It does not contain the specified cookie.
    • It contains the specified cookie, but its value does not match the regular expression defined in this match condition.

• Due to the manner in which cache settings are tracked, this match condition is incompatible with the following features:

  • Default Internal Max-Age
  • Force Internal Max-Age
  • Ignore Origin No-Cache
  • Internal Max-Stale

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