German description of openEVSE RAPI commands. http://elektrischezukunft.blogspot.co.at/2015/03/openevse-fernzugriff.html
old stuff Based on Webserver - Coding Stefan Thesen 04/2015 https://blog.thesen.eu/stabiler-http-1-1-wlan-webserver-mit-dem-esp8266-microcontroller/
no leading $ or tailing hex checksums required.
http://?control=FS switch OpenEVSE in sleep mode...
Mqtt-based communication Source: "Projekte mit Arduino und ESP" Danny Schreiter https://bmu-verlag.de/
Tested with OpenEVSE 3.7.8 see more on unifox.at