HTTP -- get HTTP headers
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. Returns '' if the header is not allowed.
When called without a parameter, nothing is returned. See
for other options.
The HTTP and HTTPS macros are deprecated as of Foswiki release 2.1. and will be removed in a future release.
Name of the header to get
Always returns ''
Not allowed by default.
You can see the HTTP headers your browser sends to the server on a number of sites e.g.
This topic: System
28 Mar 2022,
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