Netty 源码阅读笔记（5） NioServerSocketChannel_netty nioserversocketchannel 实时发送日志信息-优快云博客

本文链接：https://blog.youkuaiyun.com/weixin_44367006/article/details/107129408

本文深入剖析Netty中NioServerSocketChannel构造方法的实现细节，包括类关系图、成员变量赋值、非阻塞模式配置及事件绑定过程。通过源码阅读，揭示Netty高效网络编程的秘密。

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类关系图

在这里插入图片描述

5.1 构造方法

public NioServerSocketChannel() {
    this(newSocket(DEFAULT_SELECTOR_PROVIDER));
}

public NioServerSocketChannel(ServerSocketChannel channel) {
						//成员变量赋值，还没有真正的绑定事件
    super(null, channel, SelectionKey.OP_ACCEPT);
    config = new NioServerSocketChannelConfig(this, javaChannel().socket());
}

类 AbstractNioMessageChannel

protected AbstractNioMessageChannel(Channel parent, SelectableChannel ch, int readInterestOp) {
    super(parent, ch, readInterestOp);
}

类 AbstractNioChannel

protected AbstractNioChannel(Channel parent, SelectableChannel ch, int readInterestOp) {
    super(parent);
    this.ch = ch;
    //成员变量赋值SelectionKey.OP_ACCEPT，还没有真正的绑定事件
    this.readInterestOp = readInterestOp;
    try {
    	//设置非阻塞
        ch.configureBlocking(false);
    } catch (IOException e) {
        try {
            ch.close();
        } catch (IOException e2) {
            if (logger.isWarnEnabled()) {
                logger.warn(
                        "Failed to close a partially initialized socket.", e2);
            }
        }

        throw new ChannelException("Failed to enter non-blocking mode.", e);
    }
}

类 AbstractChannel

protected AbstractChannel(Channel parent) {
    this.parent = parent;
    id = newId();
    unsafe = newUnsafe();
    //创建了当前channel的pipeline和头尾handler 见（6）
    pipeline = newChannelPipeline();
}