bschuchardt commented on a change in pull request #5363:
URL: https://github.com/apache/geode/pull/5363#discussion_r454618295



##########
File path: geode-core/src/main/java/org/apache/geode/internal/tcp/MsgReader.java
##########
@@ -14,70 +14,65 @@
  */
 package org.apache.geode.internal.tcp;
 
+import java.io.EOFException;
 import java.io.IOException;
-import java.nio.BufferUnderflowException;
+import java.io.InputStream;
+import java.net.Socket;
 import java.nio.ByteBuffer;
 
-import org.apache.logging.log4j.Logger;
-
 import org.apache.geode.distributed.internal.DMStats;
 import org.apache.geode.distributed.internal.DistributionMessage;
 import org.apache.geode.distributed.internal.ReplyProcessor21;
 import org.apache.geode.internal.Assert;
 import org.apache.geode.internal.InternalDataSerializer;
 import org.apache.geode.internal.net.BufferPool;
-import org.apache.geode.internal.net.NioFilter;
+import org.apache.geode.internal.net.SocketUtils;
 import org.apache.geode.internal.serialization.Version;
-import org.apache.geode.logging.internal.log4j.api.LogService;
 
 /**
  * This class is currently used for reading direct ack responses It should 
probably be used for all
  * of the reading done in Connection.
  *
  */
 public class MsgReader {
-  private static final Logger logger = LogService.getLogger();
-
-  protected final Connection conn;
+  protected final ClusterConnection conn;
+  private final BufferPool bufferPool;
   protected final Header header = new Header();
-  private final NioFilter ioFilter;
   private ByteBuffer peerNetData;
+  private final InputStream inputStream;
   private final ByteBufferInputStream byteBufferInputStream;
+  private int lastProcessedPosition;

Review comment:
       It is the position of the last processed byte in the buffer and lets us 
know which byte should be processed next.




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