Created
July 3, 2018 08:56
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websockets playaround
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| { | |
| "author": "Jalal.Hejazi", | |
| "info": "Response header info", | |
| "Content-Type":"text/json", | |
| "X-Powered-By":"nodejs", | |
| "Access-Control-Allow-Origin":"*", | |
| "next":"REST The WEB" | |
| } |
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| <!doctype html> | |
| <html> | |
| <head> | |
| <title>web sockets</title> | |
| <meta charset="utf-8"> | |
| </head> | |
| <body> | |
| <button name="pusher" onClick="javascript:pushMe();">Push Me!</button> | |
| <div id="msgArea"> | |
| </div> | |
| <script src="/node_modules/socket.io-client/dist/socket.io.js"></script> | |
| <script> | |
| const socket = io.connect('http://localhost:2222'); | |
| writeMessage = ((msg) => { | |
| let msgArea = document.getElementById("msgArea"); | |
| if (typeof msg == "object") { | |
| msgArea.innerHTML = msg; | |
| } else { | |
| msgArea.innerHTML = msg; | |
| } | |
| }); | |
| puller = (() => { | |
| socket.on('news', ((data) => { | |
| console.log(data); | |
| writeMessage(data.next); | |
| socket.emit('my other event', { my: 'data' }); | |
| })); | |
| socket.on('replacer', ((data) => { | |
| console.log(data); | |
| writeMessage(data.author); | |
| socket.emit('my other event', { my: 'data' }); | |
| })); | |
| }); | |
| puller(); | |
| pushMe = (() => { | |
| socket.emit('client_data', {message:'author'}); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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| //fetch functionality for node | |
| const fetch = require('node-fetch'); | |
| //initial page return | |
| handler = ((req, res) => { | |
| fs.readFile(__dirname + '/index.html', | |
| ((err, data) => { | |
| if (err) { | |
| res.writeHead(500); | |
| return res.end('Error loading index.html'); | |
| } | |
| res.writeHead(200); | |
| res.end(data); | |
| })); | |
| }); | |
| //grab some test data for pushin' | |
| getNews = (() => { | |
| fetch('http://localhost:1234/data.json') | |
| .then((resp) => { | |
| if (resp.status === 200) { | |
| return resp.json(); | |
| } | |
| }).then((json) => { | |
| pushMe(json); | |
| }); | |
| }); | |
| //grab some test data for popin' | |
| popMe = ((socket) => { | |
| return fetch('http://localhost:1234/data.json') | |
| .then((resp) => { | |
| if (resp.status === 200) { | |
| return resp.json(); | |
| } | |
| }).then((json) => { | |
| socket.emit('replacer', json); | |
| }); | |
| }); | |
| //build the server | |
| const app = require('http').createServer(handler) | |
| , io = require('socket.io').listen(app) | |
| , fs = require('fs'); | |
| app.listen(2222); | |
| //the pusher | |
| pushMe = ((response) => { | |
| io.sockets.on('connection', (socket => { | |
| socket.emit('news', response); | |
| socket.on('client_data', ((data) => { | |
| console.log(data); | |
| popMe(socket); | |
| })); | |
| })); | |
| }); | |
| //initializing | |
| getNews(); |
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