Is there a popular protocol that uses this scheme today? I've often thought that this would be a superior way to transfer/sync data. and have always wondered wh

Is there a popular protocol that uses this scheme today? I've often thought that this would be a superior way to transfer/sync data. and have always wondered why it wasn't common. The closest I can think of is the old FSP protocol, which never really saw wide use. The client would request each individual chunk by offset, and if a chunk got lost, it could re-request it. But that's not quite the same thing.