socket.io on connection
io.on('connection', (socket) =>{
console.log(`Connecté au client ${socket.id}`)
})socket.io on connection
io.on('connection', (socket) =>{
console.log(`Connecté au client ${socket.id}`)
})socket io query
// Client side
const socket = io({
query: { token: 'cde' }
});
// Server side
io.on('connection', (socket) => {
let token = socket.handshake.query.token;
// Do something...
});how to check whether the user is online or not using socket.io
const users = {};
io.on('connection', function(socket){
console.log('a user connected');
socket.on('login', function(data){
console.log('a user ' + data.userId + ' connected');
// saving userId to array with socket ID
users[socket.id] = data.userId;
});
socket.on('disconnect', function(){
console.log('user ' + users[socket.id] + ' disconnected');
// remove saved socket from users object
delete users[socket.id];
});
});simple socket.io chat
npm install socket.iosocket only connection
import socket #server
a = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
host = 'host ip '
port = 'port'
a.bind((host,port))
a.listen(5)#5 is the no. of client at a time
socketclient,address = a.accept()
print('got a connetion from',address)Copyright © 2021 Codeinu
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