2021.03.20

1. Extensions 추가

1) Material Theme

2) Bracket Pair Colorizer

3) CSS Peek

4) HTML CSS Support

5) HTML to CSS autocompletion

6) 주석 색상 변경

: 단축키 Ctrl + ,(콤마) 세팅으로 이동 > .json 검색 후 Edit in settings.json 클릭 > 아래의 문구 추가

"editor.tokenColorCustomizations": {
"comments": "#FFC2C2"
}

2. Emmet 사이트로 바로가기

3. 저번시간에 구현한 채팅 기능에 로그인 기능 추가

** /public/client3.html

<!DOCTYPE html>
<html lang="ko">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>클라이언트 3</title>
    <script src="https://cdn.socket.io/3.1.3/socket.io.min.js" 
            integrity="sha384-cPwlPLvBTa3sKAgddT6krw0cJat7egBga3DJepJyrLl4Q9/5WLra3rrnMcyTyOnh" crossorigin="anonymous"></script>
    <script src="https://code.jquery.com/jquery-3.6.0.min.js" 
            integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4=" crossorigin="anonymous"></script>
    <script>
        let host;
        let port;
        let socket;

        $(function() {
            $('#connectButton').on('click', function(event) {
                console.log('connectButton 호출!');
                host = $('#hostInput').val();       // localhost
                port = $('#portInput').val();       // 3000
                connectToServer();
            });

            $('#sendButton').on('click', function(event) {
                const sender = $('#sender').val();  // apple
                const rev = $('#rev').val();        // all
                const data = $('#data').val();      // 채팅내용 ...

                const output = {sender:sender, recepient:rev, commend: 'chat', type:'text', data:data}
                console.log(`서버로 보낼 데이터 : ${JSON.stringify(output)}`);

                if(socket == undefined) {
                    alert('서버에 연결하지 못했습니다. 서버 연결을 먼저 시도하세요.');
                    return;
                }
                socket.emit('message', output);
            });

            $('#loginButton').on('click', function(event) {
                const id = $('#userid').val();
                const password = $('#userpw').val();

                const output = {id:id, password:password}
                console.log(`서버로 보낼 데이터 : ${JSON.stringify(output)}`);

                if(socket == undefined) {
                    alert('서버에 연결하지 못했습니다. 서버 연결을 먼저 시도하세요.');
                    return;
                }
                socket.emit('login', output);
            });
        });

        function connectToServer() {
            console.log('connectToServer 호출!');
            const url = `http://${host}:${port}`;   // http://localhost:3000
            socket = io.connect(url);
            console.log('socket 객체 생성!');
            socket.on('connect', function() {
                console.log('웹소켓 서버에 연결했습니다.');

                socket.on('message', function(message) {
                    console.log(JSON.stringify(message));
                    console.log(`수신 메시지 : ${message.sender}, ${message.recepient}, ${message.commend}, ${message.data}`);

                    println(`수신 메시지 : ${message.sender}, ${message.recepient}, ${message.commend}, ${message.data}`);
                });
            });

            function println(data) {
                $('#result').append(`<p>${data}</p>`);
            }
        }
    </script>
</head>
<body>
    <!-- http://localhost:3000/public/client3.html -->
    <h2>클라이언트 3</h2>
    <hr/>
    <p>접속 ip : <input type="text" id="hostInput" value="localhost"></p>
    <p>접속 port : <input type="text" id="portInput" value="3000"></p>
    <p><input type="button" id="connectButton" value="서버접속"></p>
    <hr/>
    <p>아이디 : <input type="text" id="userid"></p>
    <p>비밀번호 : <input type="password" id="userpw"></p>
    <p><input type="button" id="loginButton" value="로그인"> <input type="button" id="logoutButton" value="로그아웃"></p>
    <hr/>
    <p>보내는 사람 아이디 : <input type="text" id="sender" value="apple"></p>
    <p>받는 사람 아이디 : <input type="text" id="rev" value="all"></p>
    <p>메시지 : <input type="text" id="data"></p>
    <p><input type="button" id="sendButton" value="전송"></p>
    <hr/>
    <p>결과 : </p>
    <div id="result"></div>
</body>
</html>

** 1_socket_io.js

const express = require('express');
const bodyParser = require('body-parser');
const logger = require('morgan');
const cookieParser = require('cookie-parser');
const expressSession = require('express-session');
const passport = require('passport');
const static = require('serve-static');
const path = require('path');
const expressErrorHandler = require('express-error-handler');
const socketio = require('socket.io');      // npm i socket.io
const cors = require('cors');               // npm i cors

const app = express();
const router = express.Router();

app.use(cookieParser());
app.use(expressSession({
    secret: '!@#$%^&^*&(',
    resave: false,
    saveUninitialized: true,
    cookie: { maxAge: 60 * 60 * 1000 }
}));
app.use(logger('dev'));
app.use(passport.initialize());
app.use(passport.session());
app.use(bodyParser.urlencoded({extended: false}));
app.use('/public', static(path.join(__dirname, "public")));

app.use('/', router);
const errerHandler = expressErrorHandler({
    static: {
        '404': './public/404.html'
    }
});

app.use(expressErrorHandler.httpError(404));
app.use(errerHandler);

app.set('views', __dirname + "/views");
app.set('view engine', 'ejs');

const config = require('./config/config');
const database = require('./database/database');

const configPassport = require('./config/passport');
configPassport(app, passport);

const userPassport = require('./routes/route_member');
userPassport(router, passport);

const server = app.listen(config.server_port, () => {
    console.log(`${config.server_port} 포트로 웹 서버 실행중...`);
    database.init(app, config);
});

login_ids = {};

const io = socketio(server);
console.log('socket.io 서버 준비 완료!');

io.sockets.on('connection', (socket) => {
    console.dir(`connection : ${socket.request.connection._peername}`);
    socket.remoteAddress = socket.request.connection._peername.address;
    socket.remotePort = socket.request.connection._peername.port;
    console.dir(`socket.remoteAddress : ${socket.remoteAddress}`);
    console.dir(`socket.remotePort : ${socket.remotePort}`);

    socket.on('login', function(login) {
        console.log('login 이벤트를 받았습니다.');
        console.dir(login);
        console.log(`접속한 소켓의 id : ${socket.id}`);
        login_ids[login.id] = socket.id;
        socket.login_id = login.id;

        console.log(`접속한 클라이언트 id의 개수 : ${Object.keys(login_ids).length}`);
        sendresponse(socket, 'login', '200', '로그인되었습니다.');
    });

    socket.on('message', function(message) {
        console.log('message 이벤트를 받았습니다.');
        console.dir(message);

        if(message.recepient == 'all') {
            console.log('모든 클라이언트에게 메시지를 보냅니다.');
            io.sockets.emit('message', message);
        }
    });
});

function sendresponse(socket, command, code, message) {
    const statusObj = {command:command, code:code, message:message};
    socket.emit('response', statusObj);
}