Improper connection closing. CPU usage 100%

[sealedtx]

Improper closing by client causes infinite handling exception SocketException inside IOException catch block produced by reader.readline():

MinimalFTP/src/main/java/com/guichaguri/minimalftp/FTPConnection.java

Lines 558 to 568 in 801754d

	try {
	line = reader.readLine();
	} catch(SocketTimeoutException ex) {
	// Check if the socket has timed out
	if(!dataConnections.isEmpty() && (System.currentTimeMillis() - lastUpdate) >= timeout) {
	Utils.closeQuietly(this);
	}
	return;
	} catch(IOException ex) {
	return;
	}

Due to simple return the thread ConnectionThread hangs forever and consume a lot of CPU because of handling exceptions and filling stacktraces.