- [ ] I have searched the [issues](https://github.com/apache/dubbo/issues) of this repository and believe that this is not a duplicate.
- [ ] I have checked the [FAQ](https://github.com/apache/dubbo/blob/master/FAQ.md) of this repository and believe that this is not a duplicate.

### Environment

* Dubbo version: 2.7.4.1
* Java version: 1.8

### Actual Result

[https://github.com/apache/dubbo/blob/00febe9e3cb450737d403a937322dc08ab5c6f2a/dubbo-remoting/dubbo-remoting-netty4/src/main/java/org/apache/dubbo/remoting/transport/netty4/NettyClient.java#L80](https://github.com/apache/dubbo/blob/00febe9e3cb450737d403a937322dc08ab5c6f2a/dubbo-remoting/dubbo-remoting-netty4/src/main/java/org/apache/dubbo/remoting/transport/netty4/NettyClient.java#L80)

[https://github.com/apache/dubbo/blob/00febe9e3cb450737d403a937322dc08ab5c6f2a/dubbo-remoting/dubbo-remoting-netty4/src/main/java/org/apache/dubbo/remoting/transport/netty4/NettyServer.java#L79](https://github.com/apache/dubbo/blob/00febe9e3cb450737d403a937322dc08ab5c6f2a/dubbo-remoting/dubbo-remoting-netty4/src/main/java/org/apache/dubbo/remoting/transport/netty4/NettyServer.java#L79)

### Expected Result

```
wrapped
```


private static final Logger logger = LoggerFactory.getLogger(NettyClient.class);
    /**
     * netty client bootstrap
     */
    private static final NioEventLoopGroup nioEventLoopGroup = new NioEventLoopGroup(Constants.DEFAULT_IO_THREADS, new DefaultThreadFactory("NettyClientWorker", true));
    private static final String SOCKS_PROXY_HOST = "socksProxyHost";
    private static final String SOCKS_PROXY_PORT = "socksProxyPort";
    private static final String DEFAULT_SOCKS_PROXY_PORT = "1080";
    private Bootstrap bootstrap;
    /**
     * current channel. Each successful invocation of {@link NettyClient#doConnect()} will
     * replace this with new channel and close old channel.
     * <b>volatile, please copy reference to use.</b>
     */
    private volatile Channel channel;
    /**
     * The constructor of NettyClient.
     * It wil init and start netty.
     */
    public NettyClient(final URL url, final ChannelHandler handler) throws RemotingException {
    	
    	
    	super(url, wrapChannelHandler(url, handler));
    }
    /**
     * Init bootstrap