This is a (partial) implementation of the QUIC Perf Protocol.
go run cmd/main.go --run-server=true --server-address=0.0.0.0:<server port>
A pprof endpoint is available at port 6060.
go run cmd/main.go --server-address=<server ip>:<server port> --upload-bytes=<N> --download-bytes=<M>
A pprof endpoint is available at port 6061.