Working With Rails

My code is as follows client = HTTPClient.new response= client.get(‘http://localhost:3000/’)
My response header is as follows
client.get(‘http://localhost:3000/’)= #<http::message:0x537e290> @peer_cert = nil @header = #<http::message::headers:0x537e27c> @request_via_proxy = nil @response_status_code = 200 @body_charset = nil @request_query = nil @http_version = 1.1 @header_item = Array (6 element(s)) @request_method = nil @body_type = nil @request_uri = nil @chunked = false @body_date = nil @is_request = false @reason_phrase = OK @body_size = 0 StatusCodeMap = Hash (12 element(s)) CharsetMap = Hash (4 element(s)) @body = #<http::message::body:0x537e268> @@mime_type_func = nil Headers = HTTP::Message::Headers @inheritable_attributes = Empty Hash @@attr_internal_naming_format = @_%s CRLF = Body = HTTP::Message::Body

My requirement is to read the @response_status_code from the above header .Please give me some idea about this.
Thanks in advance.