&reftitle.seealso; NSAPI implements a subset of the functions from the Apache module for maximum compatibility. Apache function (only as alias) NSAPI function Description apache_request_headers nsapi_request_headers Fetch all HTTP request headers apache_response_headers nsapi_response_headers Fetch all HTTP response headers getallheaders nsapi_request_headers Fetch all HTTP request headers virtual nsapi_virtual Make NSAPI sub-request &reference.nsapi.entities.functions;