# File lib/chef/rest.rb, line 278
    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