netty-SimpleChannelInboundHandler

最新推荐文章于 2024-07-28 20:30:18 发布

原创最新推荐文章于 2024-07-28 20:30:18 发布 · 253 阅读

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本文探讨了Netty框架中Inbound消息的处理流程，详细解析了channelRead方法的实现，包括消息匹配与传递机制。重点介绍了acceptInboundMessage方法的作用，即决定消息是否由当前处理器处理还是传递给下一个处理器。


    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        boolean release = true;
        try {
            if (acceptInboundMessage(msg)) {
                @SuppressWarnings("unchecked")
                I imsg = (I) msg;
                channelRead0(ctx, imsg);
            } else {
                release = false;
                ctx.fireChannelRead(msg);
            }
        } finally {
            if (autoRelease && release) {
                ReferenceCountUtil.release(msg);
            }
        }
    }

  /**
     * Returns {@code true} if the given message should be handled. If {@code false} it will be passed to the next
     * {@link ChannelInboundHandler} in the {@link ChannelPipeline}.
     */
    public boolean acceptInboundMessage(Object msg) throws Exception {
        return matcher.match(msg);
    }