handleAcct method
ACCT: Provide account information (RFC 959). This server does not use accounts, so the command is accepted as superfluous. The argument is validated for non-empty syntax.
Implementation
void handleAcct(String argument, FtpSession session) {
if (argument.isEmpty) {
session.sendResponse('501 Syntax error in parameters');
return;
}
// This server does not require account information
session.sendResponse('202 ACCT command superfluous');
}