--- a/src/main/java/com/glavsoft/rfb/protocol/Protocol.java	Fri Jun 17 16:06:13 2016 +0900
+++ b/src/main/java/com/glavsoft/rfb/protocol/Protocol.java	Fri Jun 17 17:06:22 2016 +0900
@@ -37,11 +37,10 @@
 import com.glavsoft.rfb.protocol.state.ProtocolState;
 import com.glavsoft.transport.Reader;
 import com.glavsoft.transport.Writer;
+import jp.ac.u_ryukyu.treevnc.TreeRFBProto;
 
 import java.util.logging.Logger;
 
-import jp.ac.u_ryukyu.treevnc.TreeRFBProto;
-
 public class Protocol implements ProtocolContext, IChangeSettingsListener {
     private ProtocolState state;
     private final Logger logger;
@@ -53,7 +52,7 @@
     private final Reader reader;
     private final Writer writer;
     private String remoteDesktopName;
-    private MessageQueue messageQueue;
+    private MessageQueue messageQueue; // LinkedBlockingQueue (that is synchronized, no need of lock)
     private final DecodersContainer decoders;
     private SenderTask senderTask;
     private ReceiverTask receiverTask;