Auzure Iot MQTT SSL TLS 1.2 on SIM800 - needs "+SSLOPT=1,1"

[better-adapted]

This problem occurred on a

• TTGO T-Call V1.3 ESP32 will a SIM800L
• TinyGSM v0.10.7
• Running MQTT code adapted from the example - for secure MQTT on TLS 1.2
• TinyGsmClientSecure client(modem); Secure verison used
• Azure Iot MQTT TLS 1.2 Hub

Testing to a CloudMQTT on a SSL port - all good working fine - but then i could not establish a connection to an Azure IoT MQTT server uing TLS1.2

in modemConnect() I have had to add
if (ssl)
{
sendAT(GF("+SSLOPT=1,1"));
rsp = waitResponse();
if (rsp != 1) {
return false;
}
}
just before
sendAT(GF("+CIPSSL="), ssl);

After that it worked great - its been on solid for 3 days now - good work

the star I just gave you brought you up to 1000 - no fireworks?

Should I raise a pull request for this - not sure if this is the exact place to put the patch - perhaps it would be better in setup code?

[SRGDamia1]

Woah. I hadn't even noticed there were that many stars!

I added the code to the SIM800. Activate it by setting the pre-processor flag TINY_GSM_SSL_CLIENT_AUTHENTICATION. Look ok?

[better-adapted]

yes that sounds good

[better-adapted]

cheers i will be using it next week

[gsvitak]

@better-adapted thanks for your post..

do you have a full sample to share? Maybe a Gist?

[better-adapted]

I think it is now in the master - you can check my fork too

[kedzior-io]

@better-adapted
Hey, I'm struggling to get this working with Azure IOT Hub. Seems like you have it working.

Here is what I have:
https://github.com/kedzior-io/esp32-sim800l-tinygsm-azure-iot-hub-mqtt-ssl/blob/master/mqtt-azure.ino

Here is the error I'm getting:
kedzior-io/esp32-sim800l-tinygsm-azure-iot-hub-mqtt-ssl#1

Here is the device I'm using:
https://github.com/Xinyuan-LilyGO/LilyGo-T-Call-SIM800

Any idea?
Thanks!

[volant0098]

Thanks for share your trying.