chat

I need to create a chat like facebook chat. With Comet I need more memory to keep the connection. With Ajax polling there is a latency problem if I send request every 3-4 seconds. So... If the latency ( 3-4 seconds ) doesn't matter, Is Ajax Polling better for my case ? Latency is not the only problem. COMET (long-polling) "saves" your traffic - when you use polling, you cannot know, if there were changes on the server, so some of the calls may be just a waste of traffic and resources (e.g., even if no one's chatting, you're making calls every 3-4 seconds). In case of COMET, you generally need

I have to build a simple chat system in PHP using Comet. I don't know what would be the best approach to this project. What is the best technique (cross-browser would be nice) to use, and how to implement it ? What libraries can I use that already have comet support. ( I don't want to use the Bayeux Protocol ) I already have a PHP backend running for the chat system, but I need some ideas for the interaction between client and server. Thank you all in advance. My regards. You may want to look at WebChat2 This project uses comet, AJAX, and a custom HTTP server to communicate with IRC via

I'm trying to add in chat a "user is typing" function; chat written in PHP + MySQL/Ajax. How it should work: -when my chat partner X starts typing I see in my chat box: "X is typing" -when I (named Y) am typing he sees in his chat box: "Y is typing" (just like Yahoo Messenger). The code I've tried so far: <script type="text/javascript" language="javascript"> var timer = 0; function reduceTimer() { timer = timer - 1; isTyping(true); } function isTyping(val) { if (val == 'true') { document.getElementById('typing_on').innerHTML = "User is typing..."; } else { if (timer <= 0) { document

What are your experiences with Python Jabber / XMPP client libraries? What do you recommend? A. R. Diederich It depends what license you can use. Some popular libraries are GPL which can cause serious issues if you need to use it for work, especially if you need to keep proprietary extensions. The LGPL libraries are a little less popular, I think, but you have more flexibility with what you can use them for. I'd once looked at using twisted directly for some simple XMPP scripting but the documentation was literally non-existant. Like, I opened a published twisted reference manual and it didn't

How do I emit a message to all users in a private chat sharing a conversation_id using node.js and socket.io? var express = require('express'), app = express(), server = require('http').createServer(app), io = require('socket.io').listen(server); conversations = {}; app.get('/', function(req, res) { res.sendfile('/'); }); io.sockets.on('connection', function (socket) { socket.on('send message', function (data) { var conversation_id = data.conversation_id; if (conversation_id in conversations) { console.log (conversation_id + ' is already in the conversations object'); // emit the message [data

Does anybody have an example or a tutorial for a Android application like WhatsApp ? I want to understand how WhatsApp works and how it is programmed. I want to see an example that uses a message-chat-system with "online"-status and "read the message" -information. I used Google but I found nothing. Maybe someone has a tip. Thanks. If you are looking to create an instant messenger for Android, this code should get you started somewhere. Excerpt from the source : This is a simple IM application runs on Android, application makes http request to a server, implemented in php and mysql, to

I am trying to add an emoji to my chat program when my client types :) I am trying to add this in the FXML controller. I have captured when the user types :) using the following code snippet : if(chat.contains(":)")) { ... } My chat is printed into a textarea named taChat taChat.appendText(chat + '\n'); Any help is appreciated! A better approach would be to use TextFlow instead of using TextArea. Advantages : Individual Text are treated as children to the TextFlow. They can be added and accessed individually. ImageView can be added directly to the TextFlow as a child. A simple chat window with

I am developing a news app but I am getting following errors in from gradle console (androidx.core:core:1.0.1) and classes.jar (com.android.support:support-compat:28.0.0) Duplicate class android.support.v4.app.INotificationSideChannel$Stub found in modules classes.jar (androidx.core:core:1.0.1) and classes.jar (com.android.support:support-compat:28.0.0) Duplicate class android.support.v4.app.INotificationSideChannel$Stub$Proxy found in modules classes.jar (androidx.core:core:1.0.1) and classes.jar (com.android.support:support-compat:28.0.0) Duplicate class android.support.v4.graphics.drawable