Nuxt/examples/with-sockets/io/index.js

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import http from 'http'
import socketIO from 'socket.io'
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export default function () {
this.nuxt.hook('render:before', (renderer) => {
const server = http.createServer(this.nuxt.renderer.app)
const io = socketIO(server)
// overwrite nuxt.server.listen()
this.nuxt.server.listen = (port, host) => new Promise(resolve => server.listen(port || 3000, host || 'localhost', resolve))
// close this server on 'close' event
this.nuxt.hook('close', () => new Promise(server.close))
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// Add socket.io events
const messages = []
io.on('connection', (socket) => {
socket.on('last-messages', function (fn) {
fn(messages.slice(-50))
})
socket.on('send-message', function (message) {
messages.push(message)
socket.broadcast.emit('new-message', message)
})
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})
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})
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}