carzacc

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(context) =>
    MaterialApp(
      home: MyHomePage()
    );

carzacc

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(context) =>
    MaterialApp(
      home: MyHomePage()
    );

carzacc

class AnnouncementPage extends StatefulWidget {
  AnnouncementPage(this.nickname);

  final String nickname;

  @override
  AnnouncementPageState createState() => AnnouncementPageState();
}

class AnnouncementPageState extends State<AnnouncementPage> {

carzacc

import 'package:flutter/material.dart';
import 'package:web_socket_channel/web_socket_channel.dart';

// substitute your server's IP and port
const YOUR_SERVER_IP = 'SERVER_IP';
const YOUR_SERVER_PORT = 'SERVER_PORT':
const URL = 'ws://$YOUR_SERVER_IP:$YOUR_SERVER_PORT';

void main() => runApp(MyApp());

carzacc

for(var cl of server.clients) {
  cl.send(message);
}

carzacc

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(context) =>
    MaterialApp(
     home: Scaffold(
        appBar: AppBar(title: Text("Example app")),

carzacc

var sqlite = require('sqlite3');

var db = new sqlite.Database("users.sqlite3");

db.run(`CREATE TABLE users(
  id INTEGER PRIMARY KEY,
  username TEXT NOT NULL,
  password TEXT NOT NULL
)`);

carzacc

class HomePage extends StatelessWidget {
  HomePage(this.jwt, this.payload);
  
  factory HomePage.fromBase64(String jwt) =>
    HomePage(
      jwt,
      json.decode(
        ascii.decode(
          base64.decode(base64.normalize(jwt.split(".")[1]))
        )

carzacc

app.get('/data', function(req, res) {
  var str = req.get('Authorization');
  try {
    jwt.verify(str, KEY, {algorithm: 'HS256'});
    res.send("Very Secret Data");
  } catch {
    res.status(401);
    res.send("Bad Token");
  }

carzacc

var express = require('express')
var multer  = require('multer')
var fs = require('fs');
var upload = multer({ dest: 'uploads/' })

var app = express()

app.post('/upload', upload.single("picture"), function (req,res) {
    console.log("Received file" + req.file.originalname);
    var src = fs.createReadStream(req.file.path);