React Native with Socket.io

Let's create a basic chat app using React Native as your frontend and socket as your backend

Socket IO

The formal definition is that socket enables real-time, bidirectional event-based communication between the client and the server. It consists of a Node.js server and JS Client

This basically means is that data is transported between server and client in realtime.

Basic Socket Event Handlers

• item 1 On - on() listens for a ‘connection’ event and will run the provided function anytime this happens.

io.on("connection", (socket) => {});

• item 2 Emit - emit() to send a message to all the connected clients io.emit("message", {message,sid,time,rid});

Server Code with Socket

The server code is written on a node server using HTTP and express

Client side code with React Native

Using socket.io-client connect the client to the server. The useRef hook is essential to reference the socket.