# File lib/oauth/client/em_http.rb, line 52 def signature_base_string(http, consumer = nil, token = nil, options = {}) options = { :request_uri => normalized_oauth_uri(http), :consumer => consumer, :token => token, :scheme => 'header', :signature_method => nil, :nonce => nil, :timestamp => nil }.merge(options) OAuth::Client::Helper.new(self, options).signature_base_string end