Socket.io benchmark

stress.js

const io = require("socket.io-client");

const createLogger =
  (index) =>
  (...rest) =>
    console.log(`[${index}]`, ...rest);

const token = "";
const url = "";
let result = {
  connected: 0,
  clientCreated: 0,
};

function createClient(id) {
  const log = createLogger(id);
  const socket = io(url, {
    auth: {
      token,
    },
    transports: ["websocket"],
  });

  socket.on("connect", () => {
    result.connected += 1;
    console.log("connected", result.connected);
  });

  socket.on("error", (err) => {
    log("socket error", err);
    console.log(err);
  });

  socket.on("disconnect", () => {
    // log("disconnect");
    result.connected -= 1;
    console.log("disconnected, remining", result.connected);
  });

  // socket.on("message", (args) => {
  //   console.log("message from server", args);
  // });
  socket.onAny((event, args) => {
    console.log(`any ${event},`, args);
  });

  // setInterval(() => {
  //   socket.emit("ping");
  // }, 4000);
  result.clientCreated += 1;
}

let clientIds = [];
for (let index = 0; index < 2000; index++) {
  clientIds.push(index);
}

setInterval(() => {
  console.log(`created=${result.clientCreated}; connected=${result.connected}`);
}, 1000);

clientIds.map((id) => createClient(id));