Socket.IO

问题 From observer's perspective, symptoms are identical to the issue here Scenario is the same as well: Angular app which sends preflight requests to REST api, and preflight requests take in roughly 50% of times up to 1.3 seconds (illustration is the same as in the linked question). Also, websocket was frequently timing out until socket-io finally succeeded in establishing connection. Problem was more pronounced in Chrome and less in Safari/Firefox. However, we are using ALB and not ELB, and all

问题 My jQuery code is acting really weird. It keeps posting an extra copy of the same message each time I click on submit. For example: Hello 3 Hello 3 Hello 3 Hello 2 Hello 2 Hello Anyone have an idea why this is happening? Here is my code so far: jQuery(function ($) { var socket = io.connect(); var $messageForm = $('#sendmessage'); var $messageTitle = $('#title'); var $messageBox = $('#message'); var $chat = $('#chat'); $messageForm.click(function (e) { if ($.trim($("#title").val()).length ===

问题 I've never really used Socket.io before, so I don't understand how it works. That's why I went to start following this tutorial: http://danielnill.com/nodejs-tutorial-with-socketio/ Unfortunately it's horrible about bugs, and I'm getting one I just can't seem to fix. I'm running this on my personal server which is setup with a typical LAMP server setup on Ubuntu. Apparently this exercise doesn't use any of the server resources, so it's just in the www folder for no beneficial reason. So to

问题 Realized after setting up a simple node.js socket.IO server that it isn't sufficient to handle even the simplest webpages containing script tags. So I investigating express which is a simple web framework for node.js. After looking thru the express documentation http://expressjs.com/guide.html I was still confused as to how I simply combine express with socket.IO on a node.js server. Couple hours of googling later I came across this tutorial https://www.digitalocean.com/community/articles/how

问题 Realized after setting up a simple node.js socket.IO server that it isn't sufficient to handle even the simplest webpages containing script tags. So I investigating express which is a simple web framework for node.js. After looking thru the express documentation http://expressjs.com/guide.html I was still confused as to how I simply combine express with socket.IO on a node.js server. Couple hours of googling later I came across this tutorial https://www.digitalocean.com/community/articles/how

问题 I am implementing node js script over https. Node js const options = { key: fs.readFileSync('private.key'), cert: fs.readFileSync('cert.crt'), // This is necessary only if using the client certificate authentication. requestCert: true, rejectUnauthorized: true, // This is necessary only if the client uses the self-signed certificate. ca: [fs.readFileSync('client-cert.pem')] }; On each request this is giving error:- ERR_CERT_AUTHORITY_INVALID I have searched a lot but nothing found. I use

问题 Is it possible to send data using socket.io-node just to chosen group of users? For example, how could I implement chat with different rooms? I dont want .broadcast() to send data to all logged in users. 回答1: Normally you should have for each room a list of connected user and those user all have a client object that you should have stored somewhere. So when you want to send a message to a specific room, you just have to iterate over the connected user of that room and access their client

问题 As the title says I am trying to implement infinite scroll on my page using ejs. Right now I have it set to render a finite number of items from my database to the page. Express JS side: app.get(`/`, (req, res) => { database.find({}, (err, items) => { if (!err){ res.render("home",{cards:items}); } else { console.log(err); } }).limit(20); }); On the the EJS side I have the items then displayed in EJS by means of a forEach loop. <%cards.forEach((i) => {%> <p><%=i.contents%></p> <%})%> Which

问题 I am building a chat application that i am implementing in Docker. I have a NodeJS container with socket.io and a container with apache server and website on it. The thing is i need to connect to the website(with javascript) to the NodeJS server. I have looked at the Docker-compose docks and read about networking. The docs said that the address should be the name of the container. But when i try that i get the following error in my browser console: GET http://nodejs:3000/socket.io/socket.io

问题 I'm unable to link the index.html page to app.js.I'm trying to send the progress to index.html.But,I'm failing here.How can I overcome this issue?Can anyone please help me out ... My index.html : <script src="/socket.io/socket.io.js"></script> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="bootstrap.js"></script> <link rel="stylesheet" type="text/css" href="bootstrap.css" /> <div id="progressbar"> </div> <script> var socket = io('http://localhost