utils.rb

if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new("2.5") && ENV['OS'] =~ /Windows/i
  module RestClient
    module Utils
      def self.cgi_parse_header(line)
        parts = _cgi_parseparam(';' + line).to_a
        key = parts[0]
        pdict = {}

        while (p = parts.shift)
          i = p.index('=')
          if i
            name = p[0...i].strip.downcase
            value = p[i+1..-1].strip
            if value.length >= 2 && value[0] == '"' && value[-1] == '"'
              value = value[1...-1]
              value = value.gsub('\\\\', '\\').gsub('\\"', '"')
            end
            pdict[name] = value
          end
        end
  
        [key, pdict]
      end
    end
  end
end