eagle-transport-netty/src/main/java/eagle/jfaster/org/client/NettyClient.java
public AbstractNettyChannel newChannel() throws InterruptedException {
        ChannelFuture channelFuture = bootstrap.connect(remoteAddress).sync();
        Channel channel = channelFuture.channel();
        return this.callBack == null ? new SyncNettyChannel(this, channel) : new AsyncNettyChannel(this, channel);
    }
public AbstractNettyChannel newChannel() throws InterruptedException {
        ChannelFuture channelFuture = bootstrap.connect(remoteAddress).sync();
        Channel channel = channelFuture.channel();
        return this.callBack == null ? new SyncNettyChannel(this, channel) : new AsyncNettyChannel(this, channel);
    }
只有单线程执行该方法，不用加同步