Netty客户端收到消息延迟

Question

1.场景描述：设备向Netty服务器发送数据（大约##20ms间隔##)，Netty服务器向客户端转发消息##立即##（IOS或Android）。2.关联业务代码CTX.WriteAndFlush（msg）

protected void doWrite(ChannelOutboundBuffer in) throws Exception {
    int writeSpinCount = -1;

    boolean setOpWrite = false;
    for (;;) {
        //Get the data of the first node that needs to be flushed
        Object msg = in.current();

        if (msg instanceof ByteBuf) {
            
            ByteBuf buf = (ByteBuf) msg;

            boolean done = false;
            long flushedAmount = 0;
            // Get the number of spin lock iterations
            if (writeSpinCount == -1) {
                writeSpinCount = config().getWriteSpinCount();
            }
            // Spin, write out the current node
            for (int i = writeSpinCount - 1; i >= 0; i --) {
                int localFlushedAmount = doWriteBytes(buf);
                if (localFlushedAmount == 0) {
                    setOpWrite = true;
                    break;
                }

                flushedAmount += localFlushedAmount;
                if (!buf.isReadable()) {
                    done = true;
                    break;
                }
            }

            in.progress(flushedAmount);

            // After writing, delete the current node
            if (done) {
                in.remove();
            } else {
                break;
            }
        } 
    }
}

protected int doWriteBytes(ByteBuf buf) throws Exception {
    final int expectedWrittenBytes = buf.readableBytes();
    return buf.readBytes(javaChannel(), expectedWrittenBytes);
}

3.发出网络服务器可以及时接收设备数据，网络服务器也可以及时将数据写入套接字缓冲区。但Netty客户端收到消息时延！！！（如5s时延）

4.服务器带宽配置入站100M/bps位/秒。出站5M/bps位/秒。

Answer 1

客户终端长度打包机引起的问题。