smart-socket v1.4.8 发布，国产 Java AIO 通信框架

smart-socket 是一款国产开源的 Java AIO 框架，追求代码量、性能、稳定性、接口设计各方面都达到极致。如果 smart-socket 对您有一丝帮助，请 Star 一下我们的项目并持续关注；如果您对 smart-socket 并不满意，那请多一些耐心，smart-socket 一直在努力变得更好。

Maven

<!-- https://mvnrepository.com/artifact/org.smartboot.socket/aio-core -->
<dependency>
    <groupId>org.smartboot.socket</groupId>
    <artifactId>aio-core</artifactId>
    <version>1.4.8</version>
</dependency>

更新内容：

1. 重构服务端线程模型，相比之前版本简化很多。
2. 服务端支持自定义 backlog。
3. 新增状态机：ACCEPT_EXCEPTION，当服务端处理客户端的 accpet 事件异常时触发。
4. 其他代码上小优化。

快速上手：

1. 定义协议 

   public class StringProtocol implements Protocol<String> {
       @Override
       public String decode(ByteBuffer readBuffer, AioSession<String> session) {
           byte length = readBuffer.get(readBuffer.position());
           if (length+1 < readBuffer.remaining()) {
               return null;
           }
           byte[] b = new byte[readBuffer.get()];
           readBuffer.get(b);
           return new String(b);
       }
   }

2. 启动服务端

   public class Server {
       public static void main(String[] args) throws IOException {
           AioQuickServer<String> server = new AioQuickServer<String>(8080, new StringProtocol(), new MessageProcessor<String>() {
               public void process(AioSession<String> session, String msg) {
                   System.out.println("接受到客户端消息:" + msg);
   
                   byte[] response = "Hi Client!".getBytes();
                   byte[] head = {(byte) response.length};
                   try {
                       session.writeBuffer().write(head);
                       session.writeBuffer().write(response);
                   } catch (IOException e) {
                       e.printStackTrace();
                   }
               }
   
               public void stateEvent(AioSession<String> session, StateMachineEnum stateMachineEnum, Throwable throwable) {
               }
           });
           server.start();
       }
   }

3. 启动客户端

   public class Client {
       public static void main(String[] args) throws InterruptedException, ExecutionException, IOException {
           AioQuickClient<String> client = new AioQuickClient<String>("127.0.0.1", 8080, new StringProtocol(), new MessageProcessor<String>() {
               public void process(AioSession<String> session, String msg) {
                   System.out.println(msg);
               }
   
               public void stateEvent(AioSession<String> session, StateMachineEnum stateMachineEnum, Throwable throwable) {
               }
           });
   
           AioSession<String> session = client.start();
           byte[] msgBody = "Hello Server!".getBytes();
           byte[] msgHead = {(byte) msgBody.length};
           try {
               session.writeBuffer().write(msgHead);
               session.writeBuffer().write(msgBody);
               session.writeBuffer().flush();
           } catch (IOException e) {
               e.printStackTrace();
           }
       }
   }

想要从事物联网开发，又苦于某些通信框架学习成本太高的朋友，不妨来试试 smart-socket。