import org.apache.spark.network.protocol.MessageEncoder;
import org.apache.spark.network.util.NettyUtils;
public class ProtocolSuite {
private void testServerToClient(Message msg) {
EmbeddedChannel serverChannel = new EmbeddedChannel(new MessageEncoder());
serverChannel.writeOutbound(msg);
EmbeddedChannel clientChannel = new EmbeddedChannel(
NettyUtils.createFrameDecoder(), new MessageDecoder());