One of Remmina’s many features is a HTTP/HTTPS client in the connection manager with many tunable options to get you connected just how you want.

Hypertext Transfer Protocol - Wikipedia

The Hypertext Transfer Protocol (HTTP) is an application layer protocol for distributed, collaborative, hypermedia information systems.[1] HTTP is the foundation of data communication for the World Wide Web, where hypertext documents include hyperlinks to other resources that the user can easily access, for example by a mouse click or by tapping the screen in a web browser.