Upbit websocket format is protobuf.js??

https://github.com/protobufjs/protobuf.js/

Looks like they use this... wow... It seems to come through much more compressed this way... I had no idea...

Of course, I didn't use PRTUBF. There seems to be a separate config file, but I couldn't find it, so I gave up...

{"format":"PRTBUF"}

Still, this is the first time I learned that something like this exists... wow...