Benchmark script

Subscribe clients on channel test and then publish message into this channel. Measure time until all messages received by subscribed clients.

To run benchmark.go allow publish into channel and execute:

{
  "secret": "secret",
  "publish": true
}

run with 4000 max clients incrementing client amount by 1000 and repeat measuremrents 50 times:

go run benchmark.go ws://localhost:8000/connection/websocket secret 4000 1000 50