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MQTT Protocol Draft 5.0 Chinese Version

by hui6075

Latest version: v0.0.1 2018-05-18 (Part 3.3.1 version content translation reference@mcxiaoke)

Document address

• Chinese translation project

Overview

MQTT is a client-server architecture publish/subscribe messaging protocol. Its design philosophy is to be lightweight, open, simple, standardized, and easy to implement. These features make it a good choice for many scenarios, especially for restricted environments such as machine-to-machine communication (M2M) and the Internet of Things (IoT).

Based on version 3.1.1, MQTT protocol version 5.0 adds session/message delay function, reason code, topic alias, in-flight flow control, attributes, shared subscription and other functions, and adds AUTH message for enhanced authentication.

Table of contents

If you find any translation or formatting issues, please submit a PR to help improve it.

• Project Description
• Preface
• Table of contents
• Chapter 1 - Introduction to MQTT
• Chapter 2 – MQTT Control Message Format
• Chapter 3 – MQTT Control Messages
  • 3.1 CONNECT – Connection Request
  • 3.2 CONNACK – Confirming a connection request
  • 3.3 PUBLISH – Publish a message
  • 3.4 PUBACK – Publication Acknowledgement
  • 3.5 PUBREC – Publish Received (QoS 2, Step 1)
  • 3.6 PUBREL – Release (QoS 2, second step)
  • 3.7 PUBCOMP – Publication Complete (QoS 2, Step 3)
  • 3.8 SUBSCRIBE - Subscription Request
  • 3.9 SUBACK – Subscription Confirmation
  • 3.10 UNSUBSCRIBE – Unsubscribe Request
  • 3.11 UNSUBACK – Unsubscribe Confirmation
  • 3.12 PINGREQ – PING request
  • 3.13 PINGRESP – PING Response
  • 3.14 DISCONNECT – Disconnect
  • 3.15 AUTH – Exchange Authentication
• Chapter 4 – Operational Behavior
• Chapter 5 – Safety (non-normative)
• Chapter 6 – Using WebSocket as a Network Layer
• Chapter 7 – Consistency
• Appendix B - Mandatory Regulatory Statements (Non-normative)
• Appendix C - Summary of new features in MQTT v5.0 (non-normative)

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Document Links

Latest version: v0.0.1

agreement

• Attribution-Noncommercial-Share Alike 4.0 International

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Contact information

• Github: https://github.com/hui6075
• Email: [email protected]

Open Source Projects

• Mosquitto Cluster: https://github.com/hui6075/mosquitto-cluster

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