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server.js
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server.js
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import express from "express"
import socket from "socket.io"
import http from "http"
const app = express()
const server = http.createServer(app)
const io = socket(server, {
pingInterval: 25000,
})
app.use(express.static("react-app/build"))
let connectedUsers = 0
io.on("connection", socket => {
console.log(`${socket.id} connected`)
connectedUsers = connectedUsers + 1
io.emit("userNumber", connectedUsers)
socket.on("sendMsg", data => {
io.emit("msgData", data)
})
socket.on("disconnect", () => {
connectedUsers = connectedUsers - 1
io.emit("userNumber", connectedUsers)
console.log(`${socket.id} disconnected`)
})
socket.on("ping", msg => {
alert(msg)
})
})
server.listen(process.env.PORT || 5000, () => {
console.log("listening on port *:5000")
})