I would only need the plugin to be used on Apache Cordova.
So my difficulty is just to create the ftp server in native language java and interface it via API to cordova plugin.
the network is private, a device can up/download large file to a second device (that is the FTP Server)
With ip server, credentials, port etc, inserting
with native Java you can create a FTPS server and transform it to a Cordova Plugin?