http_support Check builtin HTTP support &reftitle.description; inthttp_support intfeature = 0 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; if the parameter is 0 or omitted, the return value contains a bitmask of all supported features that depend on external libraries &reftitle.returnvalues; Returns int, whether requested feature is supported, or a bitmask with all supported features.