无法获得域名的问题，并没有解决

[zsinba]

[REQUIRED] hat version of frp are you using

Version: 37.1

[REQUIRED] What operating system and processor architecture are you using
OS:Windows 2012
CPU architecture: Xen

[REQUIRED] description of errors

confile

log file

Steps to reproduce the issue

1. 更新到37.1版本
2. 尝试HTTPS--- FRPs---TCP ---FRPC----HTTP的代理
3. 依旧出现之前的问题，无法获得请求的servername（IIS配置的域名）， 虽然没有解决，但是现在似乎有时可以刷出来，更多是刷不出来。猜测可以刷出来的，也是我的缓存的原因（我使用了CDN）

Supplementary information

Can you guess what caused this issue

Checklist:

• [] I included all information required in the sections above
• [] I made sure there are no duplicates of this report (Use Search)

[zsinba]

[github-actions]

Issues go stale after 30d of inactivity. Stale issues rot after an additional 7d of inactivity and eventually close.