Alt: a woman looks surprised, smirks and rolls her eyes

Yuhuuu I edited the config like this import ws from 'k6/ws'; import { check } from 'k6'; export let options = { vus: 100, duration: '30s', }; let total = 0; export default function () { let url = 'ws://127.0.0.1:9001'; let messageReceived = false; let res = ws.connect(url, function (socket) { socket.on('open', function () { socket.send(JSON.stringify({ num: 42 })); }); socket.on('message', function (message) { console.log(`Received: ${message}`); total += 1; console.log(`Current total: ${total}`); messageReceived = true; socket.close(); }); socket.setTimeout(function() { if (!messageReceived) { console.log('No message received within timeout period'); } if (!messageReceived) { socket.close(); } }, 5000); }); check(res, { 'Connected successfully': (r) => r && r.status === 101, 'Message received': () => messageReceived }); } The Rust result is pretty amazing 49.000 messages checks................: 100.00% 98046 out of 98046 data_received.........: 6.9 MB 230 kB/s data_sent.............: 11 MB 354 kB/s iteration_duration....: avg=61.2ms min=392.68µs med=68.01ms max=158.02ms p(90)=90.18ms p(95)=96.22ms iterations............: 49023 1632.068219/s vus...................: 100 min=100 max=100 vus_max...............: 100 min=100 max=100 ws_connecting.........: avg=601.99µs min=93.48µs med=406.52µs max=26.67ms p(90)=921.36µs p(95)=1.26ms ws_msgs_received......: 49023 1632.068219/s ws_msgs_sent..........: 49023 1632.068219/s ws_session_duration...: avg=61.13ms min=350.24µs med=67.94ms max=157.96ms p(90)=90.1ms p(95)=96.15ms ws_sessions...........: 49023 1632.068219/s The Go one still failed but it's okay because my original goal is to compare different Rust Websocket implementations to choose the fastest one of them So I can comeback to my original goal ^^ Thank youuu