https://blog.wongcw.com/2021/04/30/edge-canary%e6%94%af%e6%8c%81%e5%90%91%e7%94%a8%e6%88%b6%e7%9a%84%e5%8f%a6%e4%b8%80%e5%8f%b0pc%e7%99%bc%e9%80%81%e7%b6%b2%e9%a0%81/