protected void startup() throws Exception {
// send initial reply only if nothing has yet been sent
synchronized (localControlChannel) {
if (localControlChannel.getReplyCount() == 0) {
// 125 Data connection already open; transfer starting
localControlChannel.write(new LocalReply(125));
}
}
}
public void run() {
boolean error = false;
Object quitToken = null;
logger.debug("TransferSinkThread executing");
try {
startup();
try {
copy();
} catch (Exception e) {
error = true;
FTPServerFacade.exceptionToControlChannel(
e, "exception during TransferSinkThread", localControlChannel);
} finally {
// attempt to obtain permission to close resources
quitToken = context.getQuitToken();
shutdown(quitToken);
}
if (!error) {
// local control channel is shared by all data channels
// so only the last one exiting may send "226 transfer complete"
if (quitToken != null) {
localControlChannel.write(new LocalReply(226));
}
}
} catch (Exception e) {
// exception occurred when trying to write to local
// control channel. So there is no way to inform
// the user.
FTPServerFacade.cannotPropagateError(e);
}
}