Minecraft Server Hello World

server.js

var mc = require('minecraft-protocol');
var server = mc.createServer({
        'online-mode': true,
        host: '0.0.0.0',
        port: 25565,
});
server.on('login', function(client) {
        client.write(0x01, {
                entityId: client.id,
                levelType: 'default',
                gameMode: 0,
                dimension: 0,
                difficulty: 2,
                maxPlayers: server.maxPlayers
        });
        client.write(0x0d, {
                x: 0,
                y: 1.62,
                stance: 0,
                z: 0,
                yaw: 0,
                pitch: 0,
                onGround: true
        });
        client.write(0x03, { message: 'Hello, ' + client.username });
});