HTTPS -- get HTTPS headers

The same as %HTTP% but operates on the HTTPS environment variables present when the SSL protocol is in effect. Can be used to determine whether SSL is turned on.

• Called with the name of an HTTP request header field, returns its value. Capitalization and the use of hyphens versus underscores are not significant.
• Request headers are sent by the browser to the server. It is not possible to access the Response headers returned to the browser.
• Only returns headers permitted by site configuration.
• When called without a parameter, nothing is returned. See VarHTTPS for other options.

Parameters

Parameter	Description	Default
"name"	Name of the header to get	optional

Examples

Write	Returns	Notes
%HTTPS%	0	Returns '1' if HTTPS is active
%HTTPS{"Accept-language"}%
%HTTPS{"User-Agent"}%	Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
%HTTPS{"Cookie"}%		Not allowed by default.

Related

HTTP, REMOTE_ADDR, REMOTE_PORT, REMOTE_USER