Does the proxy server host support SOCKS protocol?

Hi, thanks for your great work on this project!

While testing the proxy server host configuration, I noticed that it only seems to support HTTP proxies. When trying to use a SOCKS proxy (e.g., socks5://127.0.0.1:8080), it doesn't appear to work.

```
proxy:
  host: "127.0.0.1"
  port: 8080
```