=== server streaming, 50000 messages on one connection, loopback ===
gRPC          50,000 msgs in  1.341 s  =      37,285 msgs/s  ( 26.82 us each)
RSocket       50,000 msgs in  0.900 s  =      55,580 msgs/s  ( 17.99 us each)
WebSocket     50,000 msgs in  0.839 s  =      59,630 msgs/s  ( 16.77 us each)