socket connection with middleware in node and angular

client.js

  constructor() {
    this.chats = [];
    this.socket = io.connect(
      baseUrl,
      {
        path: "/chat",
        query: { "access-token": "---=====" },
        reconnection: false
      }
    );

    this.chats.push({
      sent_by: this.sentByType.bot,
      message: "hi",
      time: new Date()
    });
    this.chats.push({
      sent_by: this.sentByType.user,
      message: "hello",
      time: new Date()
    });
  }

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

      switch (err) {
        case "AUTH_FAILED":
          console.log("authentication failed");
          this.socket.disconnect(true);
          break;

        default:
          break;
      }
    });

    this.socket.on("disconnect", data => {
      console.log("---------------", data);
    });
  }

init-socket.js

// server side

export function attachEvents(io) {
  ioConn = io;
  io.use(async (socket, next) => {
    const token = socket.handshake.query["access-token"];
    const user = await validateUserToken(token).catch(err => {
      next(new Error("AUTH_FAILED"));
    });
    socket.myUser = user;
    return next();
  });

  ioConn.on("connection", socket => {
    if (socket.myUser && socket.myUser.get("id")) socketStore[socket.myUser.get("id")] = socket;
  });

  ioConn.on("disconnect", socket => {
    socket.disconnect(true);
    if (socketStore[socket.myUser.get("id")]) delete socketStore[socket.myUser.get("id")];
  });
}

server.js

// server side

const io = require("socket.io")(http, { path: "/chat" });
attachEvents(io);