    # File lib/chef/rest.rb, line 286
        def retriable_rest_request(method, url, req_body, headers)
          rest_request = Chef::REST::RESTRequest.new(method, url, req_body, headers)

          Chef::Log.debug("Sending HTTP Request via #{method} to #{url.host}:#{url.port}#{rest_request.path}")

          http_attempts = 0

          begin
            http_attempts += 1

            res = yield rest_request

          rescue SocketError, Errno::ETIMEDOUT => e
            e.message.replace "Error connecting to #{url} - #{e.message}"
            raise e
          rescue Errno::ECONNREFUSED
            if http_retry_count - http_attempts + 1 > 0
              Chef::Log.error("Connection refused connecting to #{url.host}:#{url.port} for #{rest_request.path}, retry #{http_attempts}/#{http_retry_count}")
              sleep(http_retry_delay)
              retry
            end
            raise Errno::ECONNREFUSED, "Connection refused connecting to #{url.host}:#{url.port} for #{rest_request.path}, giving up"
          rescue Timeout::Error
            if http_retry_count - http_attempts + 1 > 0
              Chef::Log.error("Timeout connecting to #{url.host}:#{url.port} for #{rest_request.path}, retry #{http_attempts}/#{http_retry_count}")
              sleep(http_retry_delay)
              retry
            end
            raise Timeout::Error, "Timeout connecting to #{url.host}:#{url.port} for #{rest_request.path}, giving up"
          rescue Net::HTTPFatalError => e
            if http_retry_count - http_attempts + 1 > 0
              sleep_time = 1 + (2 ** http_attempts) + rand(2 ** http_attempts)
              Chef::Log.error("Server returned error for #{url}, retrying #{http_attempts}/#{http_retry_count} in #{sleep_time}s")
              sleep(sleep_time)
              retry
            end
            raise
          end
        end