Esp32 mqtt ssl example. Get certificate from server, example: mqtt.

Esp32 mqtt ssl example I was able to use the WifiClientSecure. Thank you. 2. Hi, I'm trying to connect to a thingsboard broker through MQTT over SSL, modifying a bit the example code I've goy the next output: Contribute to adafruit/Adafruit_MQTT_Library development by creating an account on GitHub. ino source file also contains a short manual. Hi, I'm trying to connect to a thingsboard broker through MQTT over SSL, modifying a bit the example code I've goy the next output: 1) How does an MQTT client (IoT device) know about the existence of a MQTT broker? 2) How does an IoT device (that using MQTT) know which topic to publish / subscribe to? 3) If you sculpt MQTT + SSL, then how is the issue of expiring keys \ sertificates resolved? Except to upload them together with the firmware every time. Hi everyone, I am using PubSubClient to connect to MQTT. conf: I'm hoping to find some guidance here on how I can add TLS/SSL to a MQTT setup on a LAN that I've been working on with a Raspberry pi broker and esp32s running micropython. Skip to content. So. 1 using QNEthernet, RASPBERRY_PI_PICO_W with CYW43439 WiFi. I want to connect with my ESP32 and a Quectel modem to an MQTT broker using TLS (port 8883). Hello Everyone! I'm trying to connect my ESP32 to a mosquitto broker, running in a raspberry in my local network, using mutual authentication. 1) How does an MQTT client (IoT device) know about the existence of a MQTT broker? 2) How does an IoT device (that using MQTT) know which topic to publish / subscribe to? 3) If you sculpt MQTT + SSL, then how is the issue of expiring keys \ sertificates resolved? Except to upload them together with the firmware every time. void * ds_data Hi, I'm having some trouble with mqtt ssl example. Hi, I'm having some trouble with mqtt ssl example. h file. ESP8266 AT MQTT SSL Certificates not working. Code: Select all failed to verify peer certificate verification info: ! the certificate is not correctly signed by the trusted CA Learn how to program ESP32 to connect to MQTT broker and send/receive the data via MQTT protocol, how to program ESP32 step by step. Espressif Homepage; This is basic code to use IDF functions to connect to MQTT over SSL with ESP32 in Arduino compatible IDE (Platform. conf: Espressif ESP32 Official Forum. broker = available in I got to create a project using MQTT with SSL Muthual auth. h , but i'm starting a new project and want to implement that on ESP-IDF. 2/3. MQTT over SSL - Mosquitto. General Discussion FAQ Documentation Documentation Sample Code Discussion Forum Hardware ESP-IDF ESP-BOX ESP-ADF ESP-MDF ESP-WHO ESP-SkaiNet ESP32 Arduino Supports MQTT over TCP, SSL with mbedtls, MQTT over Websocket, MQTT over Websocket Secure. I started from the example called ssl_mutual_auth. (5581) MQTTS_SAMPLE: MQTT_EVENT_DISCONNECTED generic esp32 iot mqtt client firmware. While it's specified that `mqtt_message_receive` returns -1 the errno code is 0 (which should mean everything is fine?). eclipseprojects. Quickstart using MQTT on ESP32 with WebSocket and SSL/TLS. Most likely the certificate you used is not in correct format. 您好，mqtt+ssl单向认证失败，具体设备log和源码如附件（使用sdk内demo，只更改域名和证书），我司域名和证书使用客户端MQTTfx，android可正常连接，请帮忙看下是什么原因。 Node-RED: IoT projects with ESP32, MQTT and Docker: Master Docker and IoT: Containerized Programming for Real-World Applications Through practical examples, you will set up a variety of applications, such as Grafana for data visualization and Traefik for SSL access. 4 posts If you wish to use MQTT over TLS, we recommend considering ESP32-C3/ESP32-C2/ESP32 chips as a priority. I can't get a working combination of code. Configuration: const esp_mqtt_client_config_t mqtt_cfg = {. Now I made first the (ESP32 MQTT – Publish BME680 Temperature, Humidity, Pressure, and Gas Readings (Arduino IDE)) which worked fine. Then I try to run it on my project with the same sample code to connect and I got a mbed_ssl handshake problem (-0x7280) everytime : 1) How does an MQTT client (IoT device) know about the existence of a MQTT broker? 2) How does an IoT device (that using MQTT) know which topic to publish / subscribe to? 3) If you sculpt MQTT + SSL, then how is the issue of expiring keys \ sertificates resolved? Except to upload them together with the firmware every time. void * ds_data MQTT over SSL - Mosquitto. I added my login credentials ID and Password. I have a MQTT server running in a liunx (Ubuntu 16. Tested with Generate and send the CSR file from ESP32 to AWS over HTTPS POST method. Adafruit MQTT Library ESP32 Adafruit IO SSL/TLS example. How to use SSL of esp32!!! I initially tried the Platform through the framework Arduino, but since there is no way to configure the IDF, I decided to use only the IDF framework, well, and here are the problems, I’m tired of fighting with all this SSL shit About Us. Re: MQTT over SSL - Mosquitto Supports MQTT over TCP, SSL with mbedtls, MQTT over Websocket, MQTT over Websocket Secure. Configure the project. I spent long hours to make working TLS encrypted communication with ESP32 <----> Mosquitto broker (MQTT) also opened for that an issue where others too suffered from a similar problem: arduino-esp32/#5021 I decided to make a useful example, I hope it can be useful in the future, please include it. 10 posts • Page 1 of 1. I am trying to add MQTT Secure Client connectivity to my ESP32. Then I try to run it on my project with the same sample code to connect and I got a mbed_ssl handshake problem (-0x7280) everytime : 在本文中，将介绍使用 emqx cloud mqtt 服务器。首先，我们将介绍如何将 esp32 开发板连接到 emqx cloud mqtt 服务器。我们的目标是使用 emqx 云并使用其免费的公共 mqtt 服务器在我们的 esp32 板和 mqtt 代理之间成功建 ESP32 base project with WLAN, OTA and MQTT over TLS - Maubil/ESP32-OTA-MQTT-TLS. So the client will be able to connect to any MQTT server with a LE certificate. TLS Secured connection example between Mosquitto broker (MQTT) and ESP32 - norbertg1/ESP32_MQTT_example-with-TLS Espressif ESP32 Official Forum. Registry. Get certificate from server, example: mqtt. Code: Select all failed to verify peer certificate verification info: ! the certificate is not correctly signed by the trusted CA 1) How does an MQTT client (IoT device) know about the existence of a MQTT broker? 2) How does an IoT device (that using MQTT) know which topic to publish / subscribe to? 3) If you sculpt MQTT + SSL, then how is the issue of expiring keys \ sertificates resolved? Except to upload them together with the firmware every time. Contribute to adafruit/Adafruit_MQTT_Library development by creating an account on GitHub. pem) so I didn’t have to make any changes to the code. ) This example can be executed on any ESP32 board, the only required interface is WiFi and connection to internet. esp_transport_handle_t at = esp mbedtls_ssl_handshake returned() returned -0x2462 -0x2462: X509 - The date tag Supports MQTT over TCP, SSL with mbedtls, MQTT over Websocket, MQTT over Websocket Secure. (5581) MQTTS_SAMPLE: MQTT_EVENT_DISCONNECTED About Us. Explore; Pricing; Check the commented header file and the FullyFeatured example for a complete list of all event handlers and configuration Hello Everyone! I'm trying to connect my ESP32 to a mosquitto broker, running in a raspberry in my local network, using mutual authentication. 2: strlen 13 D (4700) esp-tls: ssl psk While it's specified that `mqtt_message_receive` returns -1 the errno code is 0 (which should mean everything is fine?). WiFiClientSecure example: File > Examples > Arduino Library for ESP32/S2/S3/C3 asynchronous MQTT client implementation. md file in the upper level 'examples' directory for more information about examples. , so I used the example project from ESP-IDF, it is going perfectly everytime I try to connect to my broker with ECDSA key type and SHA-256. crt client. Hi, Do you have any code that could submit the client certificates to the MQTT server? I tried Espressif ESP32 Official Forum. Now edit the Wi-Fi and Adafruit io credentials with correct information of example as shown in About Us. pem" It works correctly. conf: Code: Select all TEST_1_____OK Connect to global broker (SSL example project) Client log: D (8135) MQTT_CLIENT: MQTT client_id=ESP32_d5FE19 D (8145) MQTT_CLIENT: Core selection disabled D (9485) MQTT_CLIENT: Transport connected to mqtts://iot. ESP32 TLS/SSL & MQTT with MicroPython The github repo below has an example for MQTT publishing. py menuconfig)Configure Wi-Fi or Ethernet under "Example Connection Configuration" menu. 11. Post by stijnb1234 » Mon Dec 23, 2024 1:34 pm . SSL/TLS calculations are maxing out the ESP8266 capabilities, it seems. If I test it with the default broker "mqtts://mqtt. Unfortunatly in the example is used the client certificate, client private key and a server certificate not the ca certificate. org:8883 I (9485) MQTT_CLIENT: Sending MQTT CONNECT message, Support MQTT over TCP, SSL with Mbed TLS, MQTT over WebSocket, and MQTT over WebSocket Secure. Script I want to connect with my ESP32 and a Quectel modem to an MQTT broker using TLS (port 8883). Then I try to run it on my project with the same sample code to connect and I got a mbed_ssl handshake problem (-0x7280) everytime : I got to create a project using MQTT with SSL Muthual auth. Post by Vitalii_Bondarenko » Thu Dec 19, 2024 9:22 pm . I am not much familiar with MQTT ssl and ssl_ds example and not sure these example will suite Supports MQTT over TCP, SSL with mbedtls, MQTT over Websocket, MQTT over Websocket Secure. Espressif ESP32 Official Forum. pem" Learn how to set up MQTT on an ESP32 module. Implementations are for MQTT and secure MQTT (MQTTS) connection with that Broker. What I have (based on the SSL example): Code: [Expand/Collapse . As you progress, you’ll delve into the intricacies of Node-RED, mastering ESP32 MQTT_SSL ERROR. Configuration: const esp_mqtt_client_config_t mqtt_cfg = client_id: pointer to the client id, defaults to ESP32_%CHIPID% where %CHIPID% are the last 3 bytes of MAC address in hex format. md for more details. crt from many clients, so I'm pretty sure the issue is in my esp32 configuration, but here's the relevant part of my mosquitto. ESP-MQTT SSL Sample application (See the README. 12-331-ge97bb58f0. I tested the mosquitto broker and I was able to connect using client. I'm confused and I don't know how to manage the ca. 您好，mqtt+ssl单向认证失败，具体设备log和源码如附件（使用sdk内demo，只更改域名和证书），我司域名和证书使用客户端MQTTfx，android可正常连接，请帮忙看下是什么原因。 Espressif ESP32 Official Forum. See "Establishing Wi-Fi or Ethernet Connection" section in examples/protocols/README. 12-357-g740946736. Implementation for I'm having trouble with MQTT connection. There is a comment in the code describing how to use TLS. conf: Now open example of Adafruit mqtt io dashboard. 168. org:8883 I want to connect with my ESP32 and a Quectel modem to an MQTT broker using TLS (port 8883). 3k次。本文详细介绍了如何使用esp32通过亚马逊iot core进行mqtt ssl数据上传和接收。步骤包括：准备ca证书、客户端证书和私钥，创建设备和影子，下载并配置证书策略，以及在mqtt客户端测试连接和发布 Fully featured asynchronous Arduino MQTT client for ESP32 with full support for SSL/TLS and MQTT over websocket - theelims/PsychicMqttClient. esp_transport_handle_t at = esp mbedtls_ssl_handshake returned() returned -0x2462 -0x2462: X509 - The date tag I want to connect with my ESP32 and a Quectel modem to an MQTT broker using TLS (port 8883). balint603 Posts: 5 I'd like to create SSL based communication between a Mosquitto broker and an ESP32 using ESP32 mqtt component. org:8883 Open the project configuration menu (idf. Also concerned if the cert gets updated on the server do we have to go to each esp32 and update it? Cert checks against root, not sub or server cert. Espressif's ESP32-S2, ESP32-S3, ESP32-C3, ESP32-C6, ESP32-H2 and ESP32-P4 MCU have a built-in Digital Signature (DS) Peripheral, which provides hardware acceleration for RSA This is basic code to use IDF functions to connect to MQTT over SSL with ESP32 in Arduino compatible IDE (Platform. Espressif Homepage; Espressif ESP32 Official Forum. Discover HTTPS, SSL/TLS, certificates, asymmetric and symmetric key encryption. io, Visual Micro, etc). I'm trying to connect to a thingsboard broker through MQTT over SSL, modifying a bit the example code I've goy the next output: Code: Select all. AWS back-end code uses this CSR file and generate the certificate file (X. This library, ported to support ESP32, WT32_ETH01 (ESP32 + LAN8720), ESP8266, Portenta_H7 (Ethernet or WiFi) and STM32 (LAN8742A or LAN8720 Ethernet), Teensy 4. Hello, I try to run the MQTT SSL example in the esp idf environment. I registered in a cloud mqtt service to do my tests so to avoid errors due to possible miss configuration on personal server. To begin with, you can directly flash a pre-built firmware sample application on your ESP32 module. Espressif Homepage; ESP8266EX Official Forum Espressif ESP32 Official Forum. Example is using public MQTT Broker located in Slovakia - use only for development (not my Broker) 1) How does an MQTT client (IoT device) know about the existence of a MQTT broker? 2) How does an IoT device (that using MQTT) know which topic to publish / subscribe to? 3) If you sculpt MQTT + SSL, then how is the issue of expiring keys \ sertificates resolved? Except to upload them together with the firmware every time. Espressif Systems is a fabless semiconductor company providing cutting-edge low power WiFi SoCs and wireless solutions for wireless communications and Internet of Things applications. The detail instruction, code, wiring diagram, video tutorial, line-by-line code explanation Espressif ESP32 Official Forum. verification info: ! The certificate is signed with an unacceptable key (eg bad curve, RSA too short). key and ca. Then I try to run it on my project with the same sample code to connect and I got a mbed_ssl handshake problem (-0x7280) everytime : First you are saying that you created both client key and certificate but the example you are using (examples\protocols\mqtt\ssl) is only for server authentication. 10) computer with SSL and all that stuff, the thing is: I test the commands in the shell and i get no problems, but, when i'm trying to use it with a cuple of android apps called Linear MQTT Dashboard and MQTT Dashboard (they are diferent), it doesn't connect, the same thing 1) How does an MQTT client (IoT device) know about the existence of a MQTT broker? 2) How does an IoT device (that using MQTT) know which topic to publish / subscribe to? 3) If you sculpt MQTT + SSL, then how is the issue of expiring keys \ sertificates resolved? Except to upload them together with the firmware every time. crt file in esp32 client (or Mosquitto client). I will be adding more functions here: - In this tutorial, I will show you how to use ESP32 MQTTS with MQTTS Mosquitto broker (TLS/SSL). (5581) MQTTS_SAMPLE: MQTT_EVENT_DISCONNECTED Supports MQTT over TCP, SSL with mbedtls, MQTT over Websocket, MQTT over Websocket Secure. The probleme is that I don't know how to embed the mosquitto server certificate in the SSL example project. So I looked at this current one (ESP32 MQTT – Publish and First you are saying that you created both client key and certificate but the example you are using (examples\protocols\mqtt\ssl) is only for server authentication. I run my code for a mqtt AWS IOT connections with a SSL/TLS certificates with firmware esp32-idf3-20200410-v1. Pinning root CA cert (as the ^ examples do) means that as long as only It is possible to change pins used for chip-select and reset in include/MasterConfig. Now I want to create the client in the ESP32 (IDF platform). ESP32 is using socket for connection based on WiFi. If I change the broker with mqtts://test. After we had readded the log line that was removed when changing the MQTT_EVENT_DATA handler from the example it became clear that the connection closed a lot later then we received data, and then found out that the provision response was not processed. It has been prepared as PlatformIO project. Espressif Homepage; ESP-MQTT SSL Sample application (mutual authentication) (See the README. (5581) MQTTS_SAMPLE: MQTT_EVENT_DISCONNECTED I want to connect with my ESP32 and a Quectel modem to an MQTT broker using TLS (port 8883). org:8883 mqtt+ssl单向认证（sdk3. pem" Espressif ESP32 Official Forum. Finally (it looks like) the transmission layer works. esp_transport_handle_t at = esp mbedtls_ssl_handshake returned() returned -0x2462 -0x2462: X509 - The date tag First you are saying that you created both client key and certificate but the example you are using (examples\protocols\mqtt\ssl) is only for server authentication. Discover sample application, configuration steps, and tips to troubleshoot any issues. 2. org:8883 Hello Everyone! I'm trying to connect my ESP32 to a mosquitto broker, running in a raspberry in my local network, using mutual authentication. I left the same certificate name (mqtt_eclipseprojects_io. Zeni241 Posts: 86 Joined: Tue Nov 20, 2018 4:28 am. Check the commented header file and the FullyFeatured example for a complete list of all event handlers and configuration options. To open it navigate to File -> Examples -> Adafruit MQTT Library -> adafruitio_secure_esp32. com Hello Everyone! I'm trying to connect my ESP32 to a mosquitto broker, running in a raspberry in my local network, using mutual authentication. mosquitto. UPDATE: You can use the Let's encrypt root CA certificate in the example above. For mutual authentication use the example examples\protocols\mqtt\ssl_mutual_auth Then make sure that the commands you are using to generate certificates and keys are correct. I will be adding more functions here: event management, topics subscription, publishing, last will. 509 certificates generated by AWS IoT) and sending back in the response of HTTPS post #1 above. pem" 1) How does an MQTT client (IoT device) know about the existence of a MQTT broker? 2) How does an IoT device (that using MQTT) know which topic to publish / subscribe to? 3) If you sculpt MQTT + SSL, then how is the issue of expiring keys \ sertificates resolved? Except to upload them together with the firmware every time. conf: I'd like to create SSL based communication between a Mosquitto broker and an ESP32 using ESP32 mqtt component. pem" While it's specified that `mqtt_message_receive` returns -1 the errno code is 0 (which should mean everything is fine?). ) This example connects to the broker mqtt. bin and I got an error: mbedtls_ssl_handshake error: -10 on the other hand with firmware: esp32-idf3-20190529-v1. Arduino library for MQTT support. io. Support MQTT over TCP, SSL with Mbed TLS, MQTT over WebSocket, and MQTT over WebSocket Secure. Fully featured async MQTT client for ESP32 with support for SSL/TLS and MQTT over WS. MQTTS_SAMPLE: MQTT_EVENT_DISCONNECTED Please guys help me to solve this problem! Top. Use the latest version of the ESP32 Arduino Core: https://github. Easy to setup with URI. 1） MQTTS_EXAMPLE: MQTT_EVENT_DISCONNECTED. (5581) MQTTS_SAMPLE: MQTT_EVENT_DISCONNECTED 文章浏览阅读7. The server provider gives me 3 por Hi, I'm having some trouble with mqtt ssl example. 1 post • Page 1 of 1. pem" Hi, I'm having some trouble with mqtt ssl example. bin works perfectly may help someone. 0. esp_transport_handle_t at = esp mbedtls_ssl_handshake returned() returned -0x2462 -0x2462: X509 - The date tag I copied / paste only the certificate without renaming any item in the mqtt/ssl example and now I got the same error: Code: Select all. Arduino Arduino Library for ESP8266, ESP32, Portenta_H7, STM32 and RP2040W asynchronous MQTT client implementation. org:8883" and default certificate "mqtt_eclipse_org. I'd like to create SSL based communication between a Mosquitto broker and an ESP32 using ESP32 mqtt component. You do not have the required permissions to view the files attached to this post. A client certificate is to validate the identity of your ESP32 device to the server, while the server certificate is to validate the identity of the MQTT server to your device. bin and esp32-idf3-20200404-v1. Navigation Menu Toggle navigation ESP-MQTT SSL Sample application (3964) MQTT_CLIENT: Sending MQTT CONNECT message, type: 1, id: 0000 I (4164) MQTTS_EXAMPLE: MQTT_EVENT_CONNECTED I (4174) MQTTS_EXAMPLE: sent publish 一、记录 使用最新的RTOS-SDK，esp-mqtt 例程地址：ESP8266_RTOS_SDK\examples\protocols\mqtt\ssl_mutual_auth 这里所谓双向验证，其实只需要用户的PEM和KEY就行了 这里PEM可以是CRT格式，一样的 注意：不需要加服务器的CA，这个没用官方demo常常返回0x50错误，是 验证h 使用ESP32 Supports MQTT over TCP, SSL with mbedtls, MQTT over Websocket, MQTT over Websocket Secure. 3. - In order to make this tutorial, please refer const char* mqtt_server = "Your_mosquitto_host_adress"; //Adress for your Mosquitto broker server, it must be the same adress that you set in Mosquitto. csr CN field int port = 8883; //Port to your Mosquitto broker server. 4 posts Using esp_mqtt_cxx with SSL. esp_transport_handle_t at = esp mbedtls_ssl_handshake returned() returned -0x2462 -0x2462: X509 - The date tag Support MQTT over TCP, SSL with Mbed TLS, MQTT over WebSocket, and MQTT over WebSocket Secure. Looks like the certificate parsing fails. This library, ported to support ESP32/S2/S3/C3, WT32_ETH01 (ESP32 + LAN8720), ESP32 using LwIP ENC28J60, W5500, W6100 or LAN8720. Extra. esp_transport_handle_t at = esp mbedtls_ssl_handshake returned() returned -0x2462 -0x2462: X509 - The date tag Espressif ESP32 Official Forum. Then I wanted to try subscribing from Node-red to ESP32. The mqtt_ESP32_TLS. h library or secured socket under WiFiClientSecure. From this I could connect the MQTT/SSL project to the Mosquitto broker using SSL. eclipse. pem" I want to connect with my ESP32 and a Quectel modem to an MQTT broker using TLS (port 8883). ESP8266EX and ESP32 are some of our products. Top. Do you know which MQTT library I can use with SSL capability ? My MQTT broker uses certificates to establish the connection. Multiple instances (multiple clients in one My company uses a MQTT server for internal tests that uses SSL without certificates, so in order to connect to it i would need to configure my esp for doing the same, i tested on arduino IDE and i can connect to my company's server using the library WiFiClientSecure. I then returned to my MQTT5 project and added the certificate code etc from the MQTT SSL example. io using ssl transport and as a demonstration subscribes/unsubscribes and send a message on certain topic. void * ds_data Using esp_mqtt_cxx with SSL. . esp_transport_handle_t at = esp mbedtls_ssl_handshake returned() returned -0x2462 -0x2462: X509 - The date tag 1) How does an MQTT client (IoT device) know about the existence of a MQTT broker? 2) How does an IoT device (that using MQTT) know which topic to publish / subscribe to? 3) If you sculpt MQTT + SSL, then how is the issue of expiring keys \ sertificates resolved? Except to upload them together with the firmware every time. I can't understand if I somehow messed up the certificates or something else. ; PEM certificate for this example could be extracted from an openssl s_client command connecting to mqtt. esp_transport_handle_t at = esp mbedtls_ssl_handshake returned() returned -0x2462 -0x2462: X509 - The date tag Hello Everyone! I'm trying to connect my ESP32 to a mosquitto broker, running in a raspberry in my local network, using mutual authentication. 感谢回答，既然是证书的问题，我自建个mqtt broker测试下。 例程写的是互相认证，程序实现的只有客户端的认证，建议题目改成客户端认证或者程序实现双认证，以免让人产生歧义。 Hello, today I would like to show you sample implementations for connection and Publish / Subscribe to MQTT Broker. Check the sample application: examples/mqtt_ssl. h. Uses the ESP-IDF MQTT client library under the hood and adds a powerful and easy to use API on top of it. This example can be executed on any ESP32 board, the only required interface is WiFi (or ethernet) to connect to a MQTT broker with preconfigured PSK verification method. What I have (based on the SSL example): Code: [Expand/Collapse] // Configure the MQTT client. Enable secure element, available in ESP32-ROOM-32SE, for SSL connection . Contribute to cipibad/mqtt_esp32 development by creating an account on GitHub. I got to create a project using MQTT with SSL Muthual auth. All dependencies will be automatically downloaded if run with PlatformIO. mqtt+ssl单向认证（sdk3. Can you provide a sample how to deal with your recommended flaged incoming MQTT_EVENT_DATA and outer mqtt_basic example the inTopic and outTopic messages are the opposite from here. (5581) MQTTS_SAMPLE: MQTT_EVENT_DISCONNECTED Learn HTTPS and SSL/TLS encryption with ESP32 and ESP8266 NodeMCU board. h and Supports MQTT over TCP, SSL with mbedtls, MQTT over Websocket, MQTT over Websocket Secure. ESP-MQTT SSL example with PSK verification Base MAC address is not set, read default base MAC address from BLK0 of EFUSE D (4670) MQTT_CLIENT: MQTT client_id=ESP32_c6B4F8 D (4680) MQTT_CLIENT: Core selection disabled I (4680) MQTTS_EXAMPLE: Other event id:7 D (4680) esp-tls: host:192. You can even get access to the ESP-IDF MQTT Clients' configuration 1) How does an MQTT client (IoT device) know about the existence of a MQTT broker? 2) How does an IoT device (that using MQTT) know which topic to publish / subscribe to? 3) If you sculpt MQTT + SSL, then how is the issue of expiring keys \ sertificates resolved? Except to upload them together with the firmware every time. ira lpgc mxawo vwgh dbrop ohgzmk adde erxczna lhsbnb qmetf iyewvgt guhp tlcxz yaqf uoogw