Why would I want to use civetweb for WebSockets, if this exists?

[mavavilj]

I initially looked at using civetweb to run a WebSocket Server:

https://github.com/civetweb/civetweb

Then I found this library.

Now I am wondering, what point might civetweb have in comparison to this project. Civetweb seemed more popular, but this seems far simpler.