detect_http_ua_simple($env) -> [status, msg, result, meta]¶

Detect whether HTTP client is a GUI/TUI browser.

This function is a simple and fast routine to detect whether HTTP client is a GUI browser (like Chrome or Firefox), a text-based browser (like Lynx or Links), or neither (like curl or LWP). Extra information can be provided in the future.

Currently these heuristic rules are used:

• check popular browser markers in User-Agent header (e.g. 'Chrome', 'Opera');
• check Accept header for 'image/';

It is several times faster than the other equivalent Perl modules, this is because it does significantly less.

Arguments ('*' denotes required arguments):

•

env => any

CGI-compatible environment, e.g. \%ENV or PSGI's $env.

Returns an enveloped result (an array).

First element (status) is an integer containing HTTP status code (200 means OK, 4xx caller error, 5xx function error). Second element (msg) is a string containing error message, or 'OK' if status is 200. Third element (result) is optional, the actual result. Fourth element (meta) is called result metadata and is optional, a hash that contains extra information.

Return value: (hash)

• 'is_gui_browser' key will be set to true if HTTP client is a GUI browser.
• 'is_text_browser' key will be set to true if HTTP client is a text/TUI browser.
• 'is_browser' key will be set to true if either 'is_gui_browser' or 'is_text_browser' is set to true.

See also: