code: public void receivedBytesRead(int bytes) {
          if (log.isDebugEnabled()) {
              log.debug("Client received {} bytes, written {} bytes, {} messages pending", new Object[] { bytes, getWrittenBytes(), getPendingMessages() });
          }
          clientBytesRead.addAndGet(bytes);
      }
docs: Read number of received bytes.
  
  @param bytes
  Number of bytes