How to separate protocol and host from url using regular expression?

Question

Regular Expressions

There is https://www.site.com/en/
It is necessary to cut off /en/
To get https://www.site.com

But the options themselves may be different There are https://www.site.com/ru/ , https ://www.site.com/de/ , https://www.site.com/in/
Or maybe https://www.ar.site.com - in this case nothing is cut off

Answer 1

With regular expressions, you can:
https?:\/\/[^\/]*