Keep mysql connection alive

keepAlive.js

var con

var keepAlive = function () {
    console.log('Trying MySQL connection')

    con = mysql.createConnection({host: 'localhost', user: 'root', password: '', database: 'default'})

    con.connect(function (err) {
        if (err) return console.log('MySQL connection failed', err.stack)
        console.log('Connected to MySQL')
    })

    con.on('error', function (err) {
        console.log('MySQL error', err.stack)

        if (err.code === 'PROTOCOL_CONNECTION_LOST') {
            console.log('It\'s a connection error, reconnect')
            keepAlive()
        }
    })
}; keepAlive()