All of those are features that have been supported with various file transfer tools. In the end, you're still opening a TCP socket, doing some management to req

All of those are features that have been supported with various file transfer tools. In the end, you're still opening a TCP socket, doing some management to request the file, and transferring that relevant data. There are numerous ways to accomplish this, but it's still a variation of (request file, receive data). "Streaming" isn't a technical feature. It's a fiction designed to fool non-technical people (often in management, marketing, or legal). Usually this used as a euphemism for a broken client that doesn't have a "save" button.