Run concurrent WebSocket clients and measure the roundtrip-time.
npm install./bin/websocket-benchmark.js -h 'ws://echo.websocket.org/' -n 1000 -c 10
-h Host to connect to (e.g. 'ws://10.10.10.10/echo/websocket').
-n Number of clients to create.
-c Number of concurrent clients.
-r Number of roundtrips to the server each client should do.
-s Size of the message to send.