private void testServerToClient(Message msg) {
EmbeddedChannel serverChannel = new EmbeddedChannel(new MessageEncoder());
serverChannel.writeOutbound(msg);
EmbeddedChannel clientChannel = new EmbeddedChannel(
NettyUtils.createFrameDecoder(), new MessageDecoder());
while (!serverChannel.outboundMessages().isEmpty()) {
clientChannel.writeInbound(serverChannel.readOutbound());
}