header

Specifies a rule based on a request header.

Superelements

sip-rules, http-rules, or, and, if

Subelements

Exactly one of the following subelements is required:

exist, notexist

Attributes

The following attributes are required.

name

Specifies the name of the request header.

return

Specifies a variable that evaluates to the return value. See Variables.