Connecting to server by MQTT and TSL. Information about phases for connection

IoT Modules GSM Module
1

Hi, people. I get “+QMTOPEN: 0,-1” from server when trying to open. Can i get more information about errors. Can i, for example, get information about - server accepted certificate or not.

My log below. what must i send questions to server owner best? what is directions for this.

AT

OK

ATI

Quectel_Ltd

Quectel_M08R

Revision: M08RMAR01A03

OK

AT+QMTCFG=“VERSION”,0,1

OK

AT+QMTCFG=“SSL”,0,1,2

OK

AT+QSECWRITE=“RAM:cacert.pem”,1360,100

CONNECT

AT

OK

ATI

Quectel_Ltd

Quectel_M08R

Revision: M08RMAR01A03

OK

AT+QMTCFG=“VERSION”,0,1

OK

AT+QMTCFG=“SSL”,0,1,2

OK

AT+QSECWRITE=“RAM:cacert.pem”,1360,100

CONNECT

+QSECWRITE: 1360,4a48

OK

AT+QSECWRITE=“RAM:client.pem”,1809,100

CONNECT

+CPIN: READY

+QSECWRITE: 1809,1643

OK

AT+QSECWRITE=“RAM:userkey.pem”,1729,100

CONNECT

Call Ready

SMS Ready

+QSECWRITE: 1729,647a

OK

AT+QSSLCFG=“cacert”,2,“RAM:cacert.pem”

OK

AT+QSSLCFG=“clientcert”,2,“RAM:client.pem”

OK

AT+QSSLCFG=“clientkey”,2,“RAM:userkey.pem”

OK

AT+QSSLCFG=“seclevel”,2,1

OK

AT+QSSLCFG=“sslversion”,2,3

OK

AT+QSSLCFG=“ignorertctime”,1

OK

AT+QMTOPEN=0,“name.server.net”,8000

OK

+QMTOPEN: 0,-1

… repeated

3

Hi，You will need to provide the local ip address of your device to the server owner, who will help you check whether your device has been successfully registered with the server

4

Also, it’s best to provide your connection time

5

Tnx bro for help, but it was wrong cipher suit…

6

You mean you used the wrong password? However, you need to confirm the server password from the person in charge of the server, and then confirm it in “AT+QSSLCFG”

7

cipher suite - it isn’t password. read datasheet, please.

8

You may have a lot of errors, certificate path may be wrong, certificate path may be wrong, the process of connecting to the server may be wrong, specifically you need to catch a core log for analysis, and “name.server.net” the website I suggest you can change to use the ip domain name + port connection