Do not add -- proxytunnel，curl - x http://47.243.12.14 :18888 http://www.baidu.com -v It can be accessed successfully

But I have a question. Resttemplate uses 47.243.12.14: 18888 to set proxy access http://www.baidu.com It can be successful, but the proxy access is set by using reactor netty's httpclient http://www.baidu.com It's 403. I don't know what the difference is