const app = require('http').createServer(handler)
const io = require('socket.io')(app)
const fs = require('fs')
app.listen(80)
function handler(req,res){
fs.readFile(__dirname+'/index.html',(err,data)=>{
if(err){
res.writeHead(500);
return res.end('Error loading index.html,server error!')
}
res.writeHead(200);
res.end(data)
}),
}
io.on('connection',(socket)=>{
socket.emit('news',{hello:'world'})//发送个客户端消息
socket.on('my other event',(data)=>{
console.log(data)//收到的消息
})
})
<script src="/socket.io/socket.io.js"></script>
<script>
const socket=io('http://localhost');//这里一定要http开头,因为socket.io不是websocket实现的
socket.on('news',(data)=>{
console.log(data)//收到服务器emit的消息
socket.emit('my other event',{my:'data'})//完成了一次消息互换
})
</script>