Changed spacing in html and JS files.
Changed spacing based to tab based
This commit is contained in:
ShakedAp
parent
8227bb1861
commit
3fd791dce7
@ -26,53 +26,49 @@ socket.addEventListener('open', function (event) {
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// Got message from the server
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socket.addEventListener("message", (event) => {
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if (event.data.startsWith("time_sync_response_backward"))
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{
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if (event.data.startsWith("time_sync_response_backward")) {
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let time_at_server = Number(event.data.slice("time_sync_response_backward".length + 1));
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let under_estimate_latest = time_at_server - get_global_time(0);
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under_estimates.push(under_estimate_latest);
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under_estimate = median(under_estimates);
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correction = (under_estimate + over_estimate)/2;
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correction = (under_estimate + over_estimate) / 2;
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console.log(`%c Updated val for under_estimate is ${under_estimate}`, "color:green");
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console.log(`%c New correction time is ${correction} miliseconds`, 'color:red; font-size:12px');
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}
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if (event.data.startsWith("time_sync_response_forward"))
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{
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if (event.data.startsWith("time_sync_response_forward")) {
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let calculated_diff = Number(event.data.slice("time_sync_response_forward".length + 1));
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over_estimates.push(calculated_diff);
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over_estimate = median(over_estimates);
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correction = (under_estimate + over_estimate)/2;
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correction = (under_estimate + over_estimate) / 2;
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console.log(`%c Updated val for over_estimate is ${over_estimate}`, "color:green");
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console.log(`%c New correction time is ${correction} miliseconds`, 'color:red; font-size:12px');
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}
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if (event.data.startsWith("state_update_from_server"))
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{
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if (event.data.startsWith("state_update_from_server")) {
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let state = JSON.parse(event.data.slice("state_update_from_server".length + 1));
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// Whenever the client connects or reconnects
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if (client_uid == null){
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if (client_uid == null) {
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client_uid = state.client_uid;
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}
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// calculating the new timestamp for both cases - when the video is playing and when it is paused
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let proposed_time = (state.playing) ? ((get_global_time(correction) - state.global_timestamp)/1000 + state.video_timestamp) : (state.video_timestamp)
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let proposed_time = (state.playing) ? ((get_global_time(correction) - state.global_timestamp) / 1000 + state.video_timestamp) : (state.video_timestamp)
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let gap = Math.abs(proposed_time - vid.currentTime)
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console.log(`%cGap was ${proposed_time - vid.currentTime}`, 'font-size:12px; color:purple')
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if (state.playing){
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if (state.playing) {
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// tolerance while the video is playing
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if(gap > PLAYING_THRESH){
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if (gap > PLAYING_THRESH) {
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vid.currentTime = proposed_time
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}
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vid.play()
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}
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else{
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} else {
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vid.pause()
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// condition to prevent an unnecessary seek
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if (gap > PAUSED_THRESH){
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if (gap > PAUSED_THRESH) {
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vid.currentTime = proposed_time
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}
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}
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@ -87,9 +83,8 @@ socket.addEventListener('close', function (event) {
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});
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function state_change_handler(event)
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{
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if (event !== null && event !== undefined){
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function state_change_handler(event) {
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if (event !== null && event !== undefined) {
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if (event.type === 'pause')
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video_playing = false;
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@ -132,15 +127,19 @@ function get_global_time(delta = 0) {
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async function get_settings() {
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let s = null;
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await fetch('settings.json')
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.then((response)=>response.json())
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.then((responseJson)=>{s = responseJson});
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.then((response) => response.json())
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.then((responseJson) => {
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s = responseJson
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});
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return s;
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}
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function median(values) {
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if(values.length === 0) { return 0; }
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if (values.length === 0) {
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return 0;
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}
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values.sort((x,y) => (x-y));
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values.sort((x, y) => (x - y));
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let half = Math.floor(values.length / 2);
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if (values.length % 2) {
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return values[half];
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@ -156,6 +155,7 @@ function timeout(ms) {
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function do_time_sync_one_cycle_backward() {
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socket.send("time_sync_request_backward");
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}
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function do_time_sync_one_cycle_forward() {
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socket.send(`time_sync_request_forward ${get_global_time()}`);
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}
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@ -163,7 +163,7 @@ function do_time_sync_one_cycle_forward() {
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// time requests are made every second
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async function do_time_sync() {
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for(let i = 0; i < num_time_sync_cycles; i++){
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for (let i = 0; i < num_time_sync_cycles; i++) {
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await timeout(500);
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do_time_sync_one_cycle_backward();
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await timeout(500);
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36
src/index.js
36
src/index.js
@ -6,7 +6,9 @@ const WebSocket = require('ws');
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const app = express();
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const server = require('http').createServer(app);
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const wss = new WebSocket.Server({ server:server });
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const wss = new WebSocket.Server({
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server: server
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});
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const settings = JSON.parse(fs.readFileSync("settings.json"));
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const THRESH_IGNORANCE = 250;
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@ -24,7 +26,7 @@ wss.on('connection', function connection(ws) {
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users_amount += 1;
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console.log('A new client Connected. Amount of users: ', users_amount);
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state.client_uid = unique_id;
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unique_id +=1 ;
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unique_id += 1;
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ws.send(`state_update_from_server ${JSON.stringify(state)}`);
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ws.on('error', console.error);
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@ -32,24 +34,20 @@ wss.on('connection', function connection(ws) {
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ws.on('message', function message(data) {
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data = data.toString();
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if(data.startsWith("time_sync_request_backward"))
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{
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if (data.startsWith("time_sync_request_backward")) {
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ws.send(`time_sync_response_backward ${get_time()}`);
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}
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if(data.startsWith("time_sync_request_forward"))
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{
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if (data.startsWith("time_sync_request_forward")) {
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let client_time = Number(data.slice("time_sync_request_forward".length + 1));
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ws.send(`time_sync_response_forward ${get_time() - client_time}`);
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}
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if(data.startsWith("state_update_from_client"))
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{
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if (data.startsWith("state_update_from_client")) {
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let new_state = JSON.parse(data.slice("state_update_from_client".length + 1));
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let too_soon = (get_time() - state.last_updated) < THRESH_IGNORANCE;
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let other_ip = (new_state.client_uid != state.client_uid);
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let stale = (new_state.last_updated < state.last_updated)
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if (!stale && !(too_soon && other_ip))
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{
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if (!stale && !(too_soon && other_ip)) {
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state = new_state;
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wss.clients.forEach(function each(client) {
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@ -69,7 +67,9 @@ wss.on('connection', function connection(ws) {
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});
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app.use('/', express.static(__dirname));
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app.use(bodyParser.urlencoded({ extended: true }));
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app.use(bodyParser.urlencoded({
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extended: true
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}));
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app.use(bodyParser.json());
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app.use(session({
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secret: 'secret key',
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@ -85,13 +85,12 @@ app.get("/", function (req, res) {
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res.sendFile(__dirname + "/login.html");
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});
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app.post("/login", function (req, res)
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{
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app.post("/login", function (req, res) {
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const data = req.body;
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if(!data)
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if (!data)
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res.sendStatus(400);
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if(data.password == settings.password)
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if (data.password == settings.password)
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req.session.logged = true;
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else
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req.session.logged = false;
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@ -129,7 +128,10 @@ app.get("/video", function (req, res) {
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res.writeHead(206, headers);
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// create video read stream for this particular chunk
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const videoStream = fs.createReadStream(videoPath, { start, end });
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const videoStream = fs.createReadStream(videoPath, {
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start,
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end
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});
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// Stream the video chunk to the client
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videoStream.pipe(res);
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@ -139,7 +141,7 @@ server.listen(settings.server_port, settings.server_ip,
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() => console.log(`Server started at ${settings.server_ip}:${settings.server_port}`));
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function get_time(){
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function get_time() {
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let d = new Date();
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return d.getTime();
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}
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