I am creating a chat app in Android with Nodejs and Mongodb.
I get this error:
(node:49148) DeprecationWarning: current Server Discovery and Monitoring engine is deprecated, and will be removed in a future version. To use the new Server Discover and Mo nitoring engine, pass option { useUnifiedTopology: true } to the MongoClient constructor.
This is the code of js file.
const SocketServer = require('websocket').server
const http = require('http')
const express = require('express')
const app = express()
const mongoClient = require('mongodb').MongoClient
const server = http.createServer((req, res) => {})
const url = "mongodb://localhost:27017"
server.listen(50000, ()=>{
console.log("Listening on port 50000...")
})
app.listen(60000, () => {
console.log("Listening on port 60000...")
})
app.use(express.json())
mongoClient.connect(url, (err, db) => {
if (err) {
console.log("Error while connecting mongo client")
} else {
const myDb = db.db('myDb')
const collection = myDb.collection('myTable')
app.post('/signup', (req, res) => {
const newUser = {
name: req.body.name,
email: req.body.email,
password: req.body.password
}
const query = { email: newUser.email }
collection.findOne(query, (err, result) => {
if (result == null) {
collection.insertOne(newUser, (err, result) => {
res.status(200).send()
})
} else {
res.status(400).send()
}
})
})
app.post('/login', (req, res) => {
const query = {
email: req.body.email,
password: req.body.password
}
collection.findOne(query, (err, result) => {
if (result != null) {
const objToSend = {
name: result.name,
email: result.email
}
res.status(200).send(JSON.stringify(objToSend))
} else {
res.status(404).send()
}
})
})
}
})
wsServer = new SocketServer({httpServer:server})
const connections = []
wsServer.on('request', (req) => {
const connection = req.accept()
console.log('new connection')
connections.push(connection)
connection.on('message', (mes) => {
connections.forEach(element => {
if (element != connection)
element.sendUTF(mes.utf8Data)
})
})
connection.on('close', (resCode, des) => {
console.log('connection closed')
connections.splice(connections.indexOf(connection), 1)
})
})
