FTP client
Overview
The FTP client library can be used to download or upload files to FTP server.
The FTP client library reports FTP control message and download data with two separate callback
functions ftp_client.ctrl_callback and ftp_client.data_callback.
The library can be configured to automatically send KEEPALIVE message to the server through a timer
if CONFIG_FTP_CLIENT_KEEPALIVE_TIME is not zero.
The KEEPALIVE message is sent periodically at the completion of the time interval indicated by the
value of CONFIG_FTP_CLIENT_KEEPALIVE_TIME.
Protocols
The library is implemented in accordance with the RFC 959 specification.
Limitations
The library implements only a minimal set of commands as of now. However, new command support can be easily added.
Due to the differences in the implementation of FTP servers, the library might need customization to work with a specific server.