Arduino mqtt ssl io, Visual Micro, etc). Do you use a valid SSL certificate?. The server provider gives me 3 ports: port ssl port websocket(TLS only). I managed to connect the esp32 to the server without any problem, even outside the local network, and I could post and received messages. Steps. Jan 11, 2025 · This is basic code to use IDF functions to connect to MQTT over SSL with ESP32 in Arduino compatible IDE (Platform. Jul 12, 2020 · I'm not aware of an MQTT server that uses client certificates to authenticate. 2. Dec 4, 2020 · I am using PubSubClient to connect to MQTT. com Feb 15, 2021 · I'm working with an ESP32 and an MQTT Server to create a meteo station. The tricky part is finding out the SHA1 fingerprint for your own MQTT server and hard coding it into the *fingerprint PROGMEM = "" part (for example by examining the certificate via a PC browser and copying the SHA1 fingerprint). I registered in a cloud mqtt service to do my tests so to avoid errors due to possible miss configuration on personal server. I was connecting to the regular port but it was unencrypted. So I decide to add some security with SSL and it's certificate, and suddenly, nothing work anymore. Alternatively, you could set the connection to setInsecure. See full list on github. - The requirement for this demo: ESP32 with a LED on it will turn On/Off when subscribing a topic " smarthome/room1/led " with values (0: off, 1: on). . What kind of server are you using? If it's an open source implementatuon, post the configuration you use. I will be adding more functions here: event management, topics subscription, publishing, last will. - In this tutorial, I will show you how to use ESP32 MQTTS with MQTTS Mosquitto broker (TLS/SSL). izyuigdpangpxagdaksmqqkhjehqvcictnbwyxenechtccmhz