Uploaded April 2020 | Updated September 2026, 3 weeks ago

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This video shows how to advertise a network service with mDNS, using the ESP32 and the Arduino core.

Our network service will be a simple HTTP web server. We will be using the async HTTP web server library to set it up. Nonetheless, it could be something else other than a HTTP server.

Written tutorial with all the source code: techtutorialsx.com/2020/04/18/esp32-advertise-service-with-mdns

pip (Python package installer): pypi.org/project/pip
Zeroconf library: pypi.org/project/zeroconf
Requests library: requests.readthedocs.io/en/master

Commands to install both libraries with pip:
pip install zeroconf
pip install requests

PyCharm IDE: jetbrains.com/pycharm/download/#section=windows

mDNS IDF library documentation: docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/protocols/mdns.html
Common network service names: dns-sd.org/serviceTypes.html

Async HTTP web server (written post): techtutorialsx.com/2017/12/01/esp32-arduino-asynchronous-http-webserver