Appendix A Expressions Reference 233
ns_cmpclient Tests the client to determine if it accepts
compressed content.
ns_content_type Tests for connections with an HTTP Content-Type
header that contains “text”.
ns_css Tests for connections with an HTTP Content-Type
header that contains “text/css”.
ns_ext_asp Tests for HTTP connections to any URL that
contains the string .asp—in other words, any
connection to an active server page (ASP).
ns_ext_cfm Tests for HTTP connections to any URL that
contains the string .cfm
ns_ext_cgi Tests for HTTP connections to any URL that
contains the string .cgi—in other words, any
connection to a common gateway interface (CGI)
script.
ns_ext_ex Tests for HTTP connections to any URL that
contains the string .ex
ns_ext_exe Tests for HTTP connections to any URL that
contains the string .exe—in other words, any
connection to a executable file.
ns_ext_htx Tests for HTTP connections to any URL that
contains the string .htx
ns_ext_not_gif Tests for HTTP connections to any URL that does
not contain the string .gif—in other words, any
connection to a URL that is not a GIF image.
ns_ext_not_jpeg Tests for HTTP connections to any URL that does
not contain the string .jpeg—in other words, any
connection to a URL that is not a JPEG image.
ns_ext_shtml Tests for HTTP connections to any URL that
contains the string .shtml—in other words, any
connection to a server-parsed HTML page.
ns_false Always returns a value of FALSE.
Expression Definition