java - 关于Netty接收数据的问题?

问题描述

问 题

先上代码:
Client:

public class Client {
    static int port = 8787;
    static String host = "127.0.0.1";

    public static void main(String[] args){
        EventLoopGroup group = new NioEventLoopGroup();
        try {
            Bootstrap b = new Bootstrap();
            b.group(group).channel(NioSocketChannel.class);
            b.option(ChannelOption.SO_KEEPALIVE, true);
            b.handler(new ChannelInitializer<SocketChannel>() {
                @Override
                public void initChannel(SocketChannel ch) throws Exception {
                    // 编码
                    ch.pipeline().addLast(new ObjectEncoder());
                    ch.pipeline().addLast("frameEncoder", new ProtobufVarint32LengthFieldPrepender());
                    ch.pipeline().addLast("protobufEncoder", new ProtobufEncoder());
                }
            });

            // 连接服务端
            Channel ch = b.connect(host, port).sync().channel();

            long start = System.currentTimeMillis();
            for (int i = 0; i < 100; i++) {
                Message m = Message.newBuilder().setContent("random" + RandomUtils.nextInt(1, 10000)).build();
                //Thread.sleep(1);
                ch.writeAndFlush(m);
            }
            long end = System.currentTimeMillis();
            System.out.println(end - start + "ms");
        }catch(Exception e){
            e.printStackTrace();
        }finally {
            group.shutdownGracefully();
        }
    }
}

Server:

  
public class Server {

    static int port = 8787;

    public static void main(String[] args) throws Exception {
        EventLoopGroup bossGroup = new NioEventLoopGroup();
        EventLoopGroup workerGroup = new NioEventLoopGroup();
        try {
            ServerBootstrap b = new ServerBootstrap();
            b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                    .childHandler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        public void initChannel(SocketChannel ch) throws Exception {
                            ch.pipeline().addLast(new ProtobufVarint32FrameDecoder());
                            ch.pipeline().addLast(new ProtobufDecoder(CallMessage.getDefaultInstance()));
                            ch.pipeline().addLast(new ProtobufServerHandler());
                        }
                    }).option(ChannelOption.SO_BACKLOG, 128).childOption(ChannelOption.SO_KEEPALIVE, true);

            // 服务器绑定端口监听
            ChannelFuture f = b.bind(port).sync();
            // 监听服务器关闭监听
            f.channel().closeFuture().sync();
        } finally {
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }
    }
}

Handler:

@Sharable
public class ProtobufServerHandler extends ChannelInboundHandlerAdapter {
    int i = 0;

    

    @Override
        public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
            if (msg instanceof CallMessage) {
                CallMessage message = (CallMessage) msg;
                System.out.println(message.getContent());
                i++;
            }
        }
    
            @Override
            public void channelUnregistered(ChannelHandlerContext ctx) throws Exception {
                ctx.fireChannelUnregistered();
                System.out.println("断开连接->" + i);
            }
        
        }

目前出现的问题是这样:

Client发送数据时如果不加Thread.sleep(1) Server只能接收到64条数据
如果加上就可以全部接收到.但是发送时间肯定会变长.

我想问这个64是在哪设置的,能不能修改.或者说不加sleep接收全部数据,可能是100条,1000条..

谢谢.

解决方案

客户端代码
finally {
Thread.sleep(1000);

        group.shutdownGracefully();
    }

这么写试试，简单来说就是工作已经放到线程中了，但是处理需要时间，但是你都还没有处理好就优雅关闭了，服务端怎么接收

这篇关于java - 关于Netty接收数据的问题?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！