Faye fix for Firefox Bad Request

rack_adapter.rb

   def message_from_request(request)
      if request.post?
        content_type = request.env['CONTENT_TYPE'].split(';').first
        content = request.body.read

        # if we get json, just return the body
        if content_type == 'application/json'
          return content
        else
          # we don't have JSON but something else, but it's not always in
          # request.params['message']. In that case, parse the body ourselves
          # and return it.
          if request.params['message'].nil?
            return Rack::Utils.parse_query(content)['message']
          else
            return request.params['message']
          end
        end
      else
        request.params['message']
      end
    end