Fetching or posting data to the internet is one of the core tasks of an IoT device. Doing so over HTTP is implemented quite well in the default ESP8266 Arduino libraries, but for HTTPS requests things are more difficult. In this post I will discuss the most common approaches used by the community, and develop my own method to do arbitrary HTTPS requests in a secure way. This method will not require any specific certificates or fingerprints to be manually coded in the application.

Full log (Maakbaas.com)