How to reconnect socket.io in frontend if i deploy new backend

[NarawitC]

I want to check status of backend socker.io server because if i deploy new backend the frontend socket is will not connect to new backend socket and i will emit event to tell frontend to connect again or so something.

[darrachequesne]

Hi! You can force the reconnection on the client side:

socket.disconnect().connect();

This can also be triggered by the server:

// server
io.on("connection", (socket) => {
  socket.emit("please reconnect");
});

// client
socket.on("please reconnect", () => {
  socket.disconnect().connect();
});