I'm trying to publish my data to Amazon web services using BG96 (NB-IoT device that use AT commands) I'm following the official documentation (Quectel) so I configure SSL parameters ( with the command : at+ qsslcfg=...) and start MQTT SSL connection successfully (AT+QMTOPEN=...) but when I try to connect to MQTT server( AT+QMTCONN=...), the connection is closed immediately Please help,how can I fix this problem and publish my data to Amazon web services ?
AT+QSSLCFG="ciphersuite",1,0x0035
OK
AT+QSSLCFG="sslversion",1,3
OK
AT+QSSLCFG="cacert",1,"ufs:cacert.pem"
OK
AT+QSSLCFG="clientcert",1,"ufs:clientcert.pem"
OK
AT+QSSLCFG="clientkey",1,"ufs:clientkey.pem"
OK
AT+QSSLCFG="seclevel",1,2
OK
AT+QSSLCFG="negotiatetime",1,300
OK
AT+QSSLCFG="ignorelocaltime",1,0
OK
//Configure MQTT session into SSL mode.
AT+QMTCFG=”SSL”, 0, 1, 1
//Start MQTT SSL connection
AT+QMTOPEN=0, "a2xxxxxxxxxzxx.iot.us-east-1.amazonaws.com",”8883”
OK // ok
+QMTOPEN: 0,0 // means the connction is starts succsesfully
//Connect to MQTT server
AT+QMTCONN=0,"bg96"
ok
+QMTSTAT 0,1 //but this message means that the connection is closed
JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)