Use socket.io v3 with React, in hooks (React v16.8+).
If you want to use socket.io in v2, you might want to use the v2.0.4 of this package. The last commit related to the v2 version is this one.
$ yarn add use-socketio
In your code
Listen to a specific event and trigger the according callback every time there's one. This hooks doesn't trigger a re-render. You have to manage it yourself.
import SocketIOProvider useSocket from "use-socketio";const Twitter =const tweets setTweet = ;const socket subscribe unsubscribe =;return tweetslength ?<ul>tweets</ul>:<p>Actually waiting for the websocket server...</p>;;const App =<SocketIOProvider ="http://localhost:3000" =><Twitter /></SocketIOProvider>;
The socketio options to pass to the provider are available here: https://socket.io/docs/client-api/#new-Manager-url-options.
Listen to the latest message received on a specific event name. This hook triggers a re-render so you don't have to.
import SocketIOProvider useLastMessage from "use-socketio";const Twitter =const data: lastMessage socket subscribe unsubscribe =;return <p>lastMessage || "Waiting for some tweets"</p>;;const App =<SocketIOProvider ="http://localhost:3000"><Twitter /></SocketIOProvider>;
For example on how to implement a Socket.io server, you can take a look at the socket.io the example folder.