BootstrapFactory.java 文件源码

public static Bootstrap createUDPBootstrap(final ChannelType channelType) throws UnsupportedOperationException {
    Bootstrap bootstrap = new Bootstrap();

    switch (channelType) {
        case NIO:

            bootstrap.group(new NioEventLoopGroup());
            bootstrap.channel(NioDatagramChannel.class);
            return bootstrap;

        case OIO:

            bootstrap.group(new OioEventLoopGroup());
            bootstrap.channel(OioDatagramChannel.class);
            return bootstrap;

        default:
            throw new UnsupportedOperationException("Failed to create Bootstrap,  " + channelType + " not supported!");
    }
}