+ # make an OAuth signed request
+ def signed_request(method, uri, options = {})
+ uri = URI.parse(uri)
+ uri.scheme ||= "http"
+ uri.host ||= "www.example.com"
+
+ oauth = options.delete(:oauth)
+ params = options.fetch(:params, {}).transform_keys(&:to_s)
+
+ oauth[:consumer] ||= oauth[:token].client_application
+
+ helper = OAuth::Client::Helper.new(nil, oauth)
+
+ request = OAuth::RequestProxy.proxy(
+ "method" => method.to_s.upcase,
+ "uri" => uri,
+ "parameters" => params.merge(helper.oauth_parameters)
+ )
+
+ request.sign!(oauth)
+
+ method(method).call(request.signed_uri, options)
+ end
+
+ ##
+ # make an OAuth signed GET request
+ def signed_get(uri, options = {})
+ signed_request(:get, uri, options)
+ end
+
+ ##
+ # make an OAuth signed POST request
+ def signed_post(uri, options = {})
+ signed_request(:post, uri, options)
+ end
+
+ ##
+ # return request header for HTTP Accept
+ def accept_format_header(format)
+ { "Accept" => format }
+ end
+
+ ##
+ # return request header to ask for a particular error format
+ def error_format_header(f)
+ { "X-Error-Format" => f }