if (useEpsvOnly) {
respond("500 'EPSV ALL' was issued, please use only EPSV or disconnect and reconnect to use another mode of transfer.");
} else {
portisa = null; // disable active mode
CommandPASV pasv = new CommandPASV(false, this, null);
pasv.prepareAndStart();
}
}
// according to section 3.2 of RFC959, we shouldn't initiate this connection until we get a transfer command. that makes it a lot easier for us, since we can remove one more asynchronous command
protected InetSocketAddress portisa = null;