http_support Check built-in HTTP support &reftitle.description; inthttp_support intfeature0 Check for features that require external libraries. See the feature support constants table for possible values for the feature argument. &reftitle.parameters; feature feature to probe for &reftitle.returnvalues; Returns integer, whether requested feature is supported, or a bitmask with all supported features if feature was omitted. &reftitle.examples; ]]>