FTP Client for the ESP8266

A FTP-Client for the ESP8266

The main purpose of this library was to upload moisture level values to a json file in a locally hosted FTP server, as seen here https://github.com/justinleahy/arduino-moisture-sensor.

TODO

List Dir contents test with different serves;
Implement FEAT in order to choose which mode to list dir...
Implement download;

Free Website Hosting

The idea behind this project is to upload the picture via FTP making it available on an URL something like: www.mysite.com/my_picture.jpg
This way you don't need to overload the ESP32, your network remains secure, not open to the world, no port forwarding.
For this example I uploaded the GitHub Octocat to my 000Webhost hosted webiste, the file is avalable under: https://my_user.000webhostapp.com/gallery_gen/XxXxXxXx.jpg

Limitation

I was only able to download files up to ~90KB, as I can't see any usage for that, I did not spend extra time, as it's partially working.
A new example under download_file.ino has been added;
ESP.getMaxAllocHeap() returned limited amount of free memory, therefore the buffer can't hold the entire downloaded file.
- For this reason I have implemented the last argument of DownloadFile(const char * filename, unsigned char * buf, size_t length, bool printUART ) which will print the buffer directly to the UART;
- If required, SPIFFS can be used to save the file.

As mentioned here and here

Upload example

For the uploading example we will use the GitHub Octocat, which binary file is here:

Originally forked from https://github.com/blackcodetavern/ESP32_FTPClient