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netty example, include custom protocol，ssl ,kKeepalive etc

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Name		Name	Last commit message	Last commit date
Latest commit History 25 Commits
client		client
core		core
server		server
.gitignore		.gitignore
README.md		README.md
pom.xml		pom.xml

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netty

功能点

基于 LengthFieldBasedFrameDecoder 进行粘包解码处理
基于 LengthFieldPrepender 第一个字段为长度字段，它可以计算当前待发送消息的二进制字节长度，将该长度添加到ByteBuf的缓冲区头中
基于 MessageToMessageDecoder 完成二次解码
基于 MessageToMessageEncoder 完成二次解码
client端基于 Future 进行结果响应式分发
AuthHandler 一次授权
RuleBasedIpFilter 黑白名单过滤

协议数据结构

Frame(Message = MessageHeader + MessageBody(JSON)) = Length + version + opCode + streamId + operation/operation result