MQTT-3.1.1-CN
5
3.4.4 ........................................................................................................................................... 34
3.5 PUBREC QoS 2 ........................................................................................ 34
3.5.1 .................................................................................................................................... 34
3.5.2 .................................................................................................................................... 34
3.5.3 .................................................................................................................................... 35
3.5.4 ........................................................................................................................................... 35
3.6 PUBREL QoS 2 ......................................................................................... 35
3.6.1 .................................................................................................................................... 35
3.6.2 .................................................................................................................................... 35
3.6.3 .................................................................................................................................... 36
3.6.4 ........................................................................................................................................... 36
3.7 PUBCOMP QoS 2 ..................................................................................... 36
3.7.1 .................................................................................................................................... 36
3.7.2 .................................................................................................................................... 36
3.7.3 .................................................................................................................................... 36
3.7.4 ........................................................................................................................................... 36
3.8 SUBSCRIBE - ................................................................................................................... 37
3.8.1 .................................................................................................................................... 37
3.8.2 .................................................................................................................................... 37
3.8.3 .................................................................................................................................... 37
3.8.4 ........................................................................................................................................... 39
3.9 SUBACK ......................................................................................................................... 40
3.9.1 .................................................................................................................................... 40
3.9.2 .................................................................................................................................... 40
3.9.3 .................................................................................................................................... 41
3.10 UNSUBSCRIBE ............................................................................................................ 41
3.10.1 .................................................................................................................................. 42
3.10.2 .................................................................................................................................. 42
3.10.3 .................................................................................................................................. 42
3.10.4 ......................................................................................................................................... 43
3.11 UNSUBACK .......................................................................................................... 43
3.11.1 .................................................................................................................................. 44
3.11.2 .................................................................................................................................. 44
3.11.3 .................................................................................................................................. 44
3.12 PINGREQ ..................................................................................................................... 44
3.12.1 .................................................................................................................................. 44
3.12.2 .................................................................................................................................. 45
3.12.3 .................................................................................................................................. 45
3.12.4 ......................................................................................................................................... 45
3.13 PINGRESP ................................................................................................................... 45
3.13.1 .................................................................................................................................. 45
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