https://blog.wongcw.com/2021/09/06/edge-canary%e9%a0%90%e8%a8%ad%e5%95%9f%e7%94%a8%e7%b6%b2%e8%b3%bc%e5%8a%9f%e8%83%bd-%e6%96%b0%e5%a2%9e%e6%97%85%e9%81%8a%e6%8e%a8%e8%96%a6%e5%8a%9f%e8%83%bd/