例程https://developer.canaan-creative.com/k230_canmv/zh/main/zh/example/network/http_server.html#id9
01Stdudio的K230，固件版本是v2.9.0
例程运行后控制台输出：
通过浏览器访问 http://192.168.3.47:8081/ ，浏览器会一直在加载页面状态
控制台输出
后面如果不做任何操作，浏览器会一直卡在加载状态直到超时
如果手动关闭浏览器，控制台会输出刚刚浏览器发来的GET请求
b'GET / HTTP/1.1\r\nHost: 192.168.3.47:8081\r\nConnection: keep-alive\r\nUpgrade-Insecure-Requests: 1\r\nUser-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36\r\nAccept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9\r\nAccept-Encoding: gzip, deflate\r\nAccept-Language: zh-CN,zh;q=0.9\r\n\r\n'
