MQTTS-Not Verify Server

MQTTS- Not Verify Server

MQTT (Message Queuing Telemetry Transport) is a lightweight broker-based publish/subscribe messaging protocol.

It is a machine-to-machine (M2M)/”Internet of Things” connectivity protocol.

It was designed as an extremely lightweight publish/subscribe messaging transport.

It is useful for connections with remote locations where a small code footprint is required and/or network bandwidth is at a premium.

1. 통신시스템: MQTTS- Not Verify Server

2. 명령시퀀스: MQTTS- Not Verify Server

No	Command	Response	Description
1	PDP Context 설정
2	AT+CMQTTSTART	+CMQTTSTART: 0 OK	Start MQTT service, activate PDP context
3	AT+CMQTTACCQ=0, “client test0”	OK	Acquire one client which will connect to a MQTT server without SSL/TLS.
4.1	AT+CMQTTWILLTOPIC=0,10	>	Set the topic of the will
4.2	>0123456789	OK	Input 10 Character as topic
5.1	AT+CMQTTWILLMSG=0,6,1	>	Set the will message
5.2	>qwerty	OK	Input 6 Character
6	AT+CMQTTCONNECT=0, “tcp://test.mosquitto.org:8883”,60,1	OK +CMQTTCONNECT: 0,0	Connect to a MQTT server


7.1	AT+CMQTTTOPIC=0,13	>	Set the topic for the PUBLISH message
7.2	>dddrrrggghhhk	OK	Input topic to publish
8.1	AT+CMQTTPAYLOAD=0,60	>	Set the payload for the PUBLISH message
8.2	>012345678901234567890123456789 012345678901234567890123456789	OK	Input message


9	AT+CMQTTPUB=0,1,60	OK +CMQTTPUB: 0,0	Publish a message (Received Hi, MOMO sent from server)
10.1	AT+CMQTTSUBTOPIC=0,9,1	>	Set one topic for the SUBSCRIBE message
10.2	>123456789	OK
11.1	AT+CMQTTSUB=0	>	Set one topic for the SUBSCRIBE message
11.2	>simcommsg	OK
12	AT+CMQTTUNSUB=0,9,0	OK +CMQTTSUB: 0,0	Subscribe a message
13.1	AT+CMQTTUNSUB=0,9,0	>	Unsubscribe one topic from the server
13.2	>simcommsg	OK +CMQTTUNSUB: 0,0
14	AT+CMQTTDISC=0,120	OK +CMQTTDISC: 0,0	Disconnect from server
15	AT+CMQTTREL=0	OK	Release the client
16	AT+CMQTTSTOP	+CMQTTSTOP: 0 OK +CMQTTNONET	Stop MQTT Service