http and https

HTTP is the HyperText Transfer Protocol.

SonicDE applications use the http KIO worker to handle connections to HTTP servers, that is, web servers.

You can use the https KIO worker by giving an application a URL such as https://www.example.org.

https is http encapsulated in an SSL/TLS stream.

SSL is the Secure Sockets Layer protocol, a security protocol that provides communications privacy over the Internet. It lets client and server applications communicate in a way designed to prevent eavesdropping, tampering and message forgery.

TLS stands for Transport Layer Security.