A new form of state-level internet filtering that restricts data flow is disrupting access to large portions of the global web for Russian citizens. Cloudflare, the world leader in DDoS protection and high-traffic load management, is being targeted by these new data caps, which appear designed to push users toward Russian-controlled services. Meanwhile, the move leaves Russian businesses dangerously exposed.
Its an endless arms race. Next will be chunking vpns that chunk requests down to 16kb packets and reassemble on the other end. There is nothing stopping a custom protocol from working around this limitation, in a safe secure manner.
Just a matter of time.
You could probably do it with http if the server properly supports the content range headers.