MQTT协议5.0中文版_mqtt中文版,mqtt5.0协议资源-CSDN文库

MQTT协议5.0中文版

需积分: 5 618 浏览量 2022-07-07 11:37:56 上传评论 6 收藏 1.87MB PDF 举报

身份认证购VIP最低享 7 折!

领优惠券(最高得80元）

资源详情

资源评论

资源推荐

2017 年 10 月 26 日

MQTT v5.0 公开评审草案中文版 1/132

MQTT 协议 5.0 中文版

委员会规范草案 02 /

公开评审草案 02

2017 年 10 月 26 日

规范链接

当前版本：

http://docs.oasis-open.org/mqtt/mqtt/v5.0/csprd02/mqtt-v5.0-csprd02.docx (Authoritative)

http://docs.oasis-open.org/mqtt/mqtt/v5.0/csprd02/mqtt-v5.0-csprd02.html

http://docs.oasis-open.org/mqtt/mqtt/v5.0/csprd02/mqtt-v5.0-csprd02.pdf

以前的版本：

http://docs.oasis-open.org/mqtt/mqtt/v5.0/csprd01/mqtt-v5.0-csprd01.docx (Authoritative)

http://docs.oasis-open.org/mqtt/mqtt/v5.0/csprd01/mqtt-v5.0-csprd01.html

http://docs.oasis-open.org/mqtt/mqtt/v5.0/csprd01/mqtt-v5.0-csprd01.pdf

最新版本

位置。技术委员会产生的其他修订版和其他技

术文档都列在这里：https://www.oasis-

open.org/committees/tc_home.php?wg_abbrev=mqtt#technical .

技术委员会成员对本规范的评论应该发送到技术委员会的邮件列表。其他人应该发送评论到技术委

员会的公共评论列表，方法是点击技术委员会网站的发送评论按钮，网页地址是

https://www.oasis-open.org/committees/mqtt/ .

本规范草案的发布基于 OASIS 知识产权政策的 Non-Assertion 模式。关于实现本规范必不可少的

任何专利是否已公开，以及其他的专利许可条款相关的信息，请参考技术委员会网站的知识产权部

分 (https://www.oasis-open.org/committees/mqtt/ipr.php).

请注意，为本产品声明的任何机器可读内容（计算机语言定义）单独提供纯文本文件。对于产品叙

述文档中出现的任何不一致，以纯文本文档为准。

引用格式：

引用此规范时应该使用下面的引文格式：

[mqtt-v5.0]

MQTT Version 5.0. Edited by Andrew Banks, Ed Briggs, Ken Borgendale, and Rahul Gupta. 26

October 2017. OASIS Committee Specification Draft 02 / Public Review Draft 02.

http://docs.oasis-open.org/mqtt/mqtt/v5.0/csprd02/mqtt-v5.0-csprd02.html. Latest version:

http://docs.oasis-open.org/mqtt/mqtt/v5.0/mqtt-v5.0.html

2017 年 10 月 26 日

MQTT v5.0 公开评审草案中文版 4/132

注意

All capitalized terms in the following text have the meanings assigned to them in the OASIS Intellectual Property

Rights Policy (the "OASIS IPR Policy"). The full Policy may be found at the OASIS website.

This document and translations of it may be copied and furnished to others, and derivative works that comment on

or otherwise explain it or assist in its implementation may be prepared, copied, published, and distributed, in whole

or in part, without restriction of any kind, provided that the above copyright notice and this section are included on

all such copies and derivative works. However, this document itself may not be modified in any way, including by

removing the copyright notice or references to OASIS, except as needed for the purpose of developing any

document or deliverable produced by an OASIS Technical Committee (in which case the rules applicable to

copyrights, as set forth in the OASIS IPR Policy, must be followed) or as required to translate it into languages other

than English.

The limited permissions granted above are perpetual and will not be revoked by OASIS or its successors or assigns.

This document and the information contained herein is provided on an "AS IS" basis and OASIS DISCLAIMS ALL

WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT

THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY OWNERSHIP RIGHTS OR ANY

IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

OASIS requests that any OASIS Party or any other party that believes it has patent claims that would necessarily be

infringed by implementations of this OASIS Committee Specification or OASIS Standard, to notify OASIS TC

Administrator and provide an indication of its willingness to grant patent licenses to such patent claims in a manner

consistent with the IPR Mode of the OASIS Technical Committee that produced this specification.

OASIS invites any party to contact the OASIS TC Administrator if it is aware of a claim of ownership of any patent

claims that would necessarily be infringed by implementations of this specification by a patent holder that is not

willing to provide a license to such patent claims in a manner consistent with the IPR Mode of the OASIS Technical

Committee that produced this specification. OASIS may include such claims on its website, but disclaims any

obligation to do so.

OASIS takes no position regarding the validity or scope of any intellectual property or other rights that might be

claimed to pertain to the implementation or use of the technology described in this document or the extent to which

any license under such rights might or might not be available; neither does it represent that it has made any effort to

identify any such rights. Information on OASIS' procedures with respect to rights in any document or deliverable

produced by an OASIS Technical Committee can be found on the OASIS website. Copies of claims of rights made

available for publication and any assurances of licenses to be made available, or the result of an attempt made to

obtain a general license or permission for the use of such proprietary rights by implementers or users of this OASIS

Committee Specification or OASIS Standard, can be obtained from the OASIS TC Administrator. OASIS makes no

representation that any information or list of intellectual property rights will at any time be complete, or that any

claims in such list are, in fact, Essential Claims.

The name "OASIS" is a trademark of OASIS, the owner and developer of this specification, and should be used only

to refer to the organization and its official outputs. OASIS welcomes reference to, and implementation and use of,

specifications, while reserving the right to enforce its marks against misleading uses. Please see https://www.oasis-

open.org/policies-guidelines/trademark

for above guidance.

2017 年 10 月 26 日

MQTT v5.0 公开评审草案中文版 5/132

1 概述 ................................................................................................................................................................... 12

1.0 知识产权政策 .................................................................................................................................................. 12

1.1 MQTT 协议的组织结构 .................................................................................................................................. 12

1.2 术语 .................................................................................................................................................................. 12

1.3 规范引用 .......................................................................................................................................................... 14

1.4 非规范引用 ...................................................................................................................................................... 14

1.5 数据表示 .......................................................................................................................................................... 17

1.5.1 二进制位 .................................................................................................................................................. 17

1.5.2 双字节整数 .............................................................................................................................................. 17

1.5.3 四字节整数 .............................................................................................................................................. 17

1.5.4 UTF-8 编码字符串 ................................................................................................................................. 17

1.5.5 变长字节整数 .......................................................................................................................................... 19

1.5.6 二进制数据 .............................................................................................................................................. 20

1.5.7 UTF-8 字符串对...................................................................................................................................... 20

1.6 安全 .................................................................................................................................................................. 20

1.7 编辑约定 .......................................................................................................................................................... 20

1.8 变更历史 .......................................................................................................................................................... 20

1.8.1 MQTT v3.1.1 .......................................................................................................................................... 20

1.8.2 MQTT v5.0 .............................................................................................................................................. 20

2 MQTT 控制报文格式........................................................................................................................................ 22

2.1 MQTT 控制报文结构 ...................................................................................................................................... 22

2.1.1 固定报头 .................................................................................................................................................. 22

2.1.2 MQTT 控制报文的类型 .......................................................................................................................... 22

2.1.3 标志 .......................................................................................................................................................... 23

2.1.4 剩余长度 .................................................................................................................................................. 24

2.2 可变报头 .......................................................................................................................................................... 24

2.2.1 报文标识符 .............................................................................................................................................. 24

2.2.2 属性 .......................................................................................................................................................... 26

2.2.2.1 属性长度 ........................................................................................................................................................... 26

2.2.2.2 属性 ................................................................................................................................................................... 26

2.3 有效载荷 .......................................................................................................................................................... 27

2.4 原因码 .............................................................................................................................................................. 28

3 MQTT 控制报文 ............................................................................................................................................... 31

3.1 CONNECT – 连接请求 .................................................................................................................................. 31

3.1.1 CONNECT 固定报头 ............................................................................................................................. 31

3.1.2 CONNECT 可变报头 ............................................................................................................................. 31

3.1.2.1 协议名 ............................................................................................................................................................... 31

3.1.2.2 协议版本 ........................................................................................................................................................... 32

3.1.2.3 连接标志 ........................................................................................................................................................... 32