server-push

Http2 - server-push with nodejs pushStream method do not working

由 梦想与她 提交于 2019-12-04 20:18:21
I am studying http2 on nodejs , but find out a issue pushStream method not working (client side do not show "Pushed/[fileName]" on developer tool) I wonder if the reason is nodejs version (i installed the latest version v9.8.0) My codes is the following : server.js 'use strict' const fs = require('fs'); const path = require('path'); const http2 = require('http2'); const utils = require('./utils'); const { HTTP2_HEADER_PATH } = http2.constants; const PORT = process.env.PORT || 3000; // The files are pushed to stream here function push(stream, path) { const file = utils.getFile(path); if (!file)

Keeping a jQuery .getJSON() connection open and waiting while in body of a page?

由 余生颓废 提交于 2019-12-04 17:00:13
I'm writing a basic push messaging system. A small change has caused it to stop workingly properly. Let me explain. In my original version, I was able to put the code in the of a document something like this: <head> ...text/javascript"> $(document).ready(function(){ $(document).ajaxStop(check4Updates); check4Updates(); }); function check4Updates(){ $.getJSON('%PATH%', callback); }; ... </head> This worked nicely and would keep the connection open even if the server return null (which it would after say a 2 minute timeout). It would just keep calling the getJSON function over and over

The client (desktop app) pulls data…but I want the server (web app) to push data

由 我只是一个虾纸丫 提交于 2019-12-04 09:37:12
问题 I have a client-server application - wherein the server is essentially an ASP .NET web application and the distributed clients are desktop applications. The clients need to receive some data from the server - when there is new data for the client. Right now, the way this is done is - the client keeps querying a web service every x minutes (say 2 minutes) and keeps checking if there's new data for the client. Ideally, the way it should work is that the desktop app should receive updates as and

Rails 3: Real-time server push?

由 一曲冷凌霜 提交于 2019-12-04 06:41:17
I'm trying to write a Rails 3 application in which a server can push data to multiple clients in real time. I've heard of Juggernaut, but I've also heard that it does not work with Rails 3. I tried APE (AJAX Push Engine), but I'm not having much luck with it. I'm very new to Rails. I can't find many guides that involve real-time push, and Rails 3. I was looking for a free, easy (if possible) solution to this. If anyone could point me in the right direction, I'd greatly appreciate it. Check out Faye: http://faye.jcoglan.com/ - I hear really good things about it. if you're looking for a hosted

Comet, Ajax Push, Reverse Ajax

由 ℡╲_俬逩灬. 提交于 2019-12-03 13:07:35
问题 Someone have any sample of Comet app .net? I need one sample how to persist connection of client in server? 回答1: Here are some good ones too: http://www.frozenmountain.com/websync/demos 回答2: Here are two nice and scalabe examples: example 1 example 2 Update Be sure to take a look at SignalR 回答3: There are many sample projects for ASP.NET HERE 来源： https://stackoverflow.com/questions/2601893/comet-ajax-push-reverse-ajax

Can ASP.NET MVC's AsyncController be used to service large number of concurrent hanging requests (long poll)?

由 对着背影说爱祢 提交于 2019-12-03 10:08:37
问题 Frameworks like Node.js, Tornado, and Twisted let developers create server-push applications that supports large number of concurrent hanging requests (10k+). From what I understand, they all achieve this by not creating threads to service each hanging request. Can AsyncController be used to service large number of inactive concurrent requests? If so, are there any reasonably large ASP.NET MVC websites using this approach to create long-poll applications? 回答1: I recently wrote a simple

Downside of using Server-Sent events for bidirectional client-server communication (instead of WebSockets)

由 橙三吉。 提交于 2019-12-03 09:08:21
问题 Recently I've found out of Server-Sent events as a much simpler alternative to WebSockets for doing push from the server. Most places that compare them (like here, here and here) say that if you don't need full duplex communications between client and server, then WebSockets is overkill and SSE are good enough. My question is what would be the downside of using SSE when you do need bidirectional communications (like a chat for example), using regular ajax requests for sending messages from

Difference between async servlet long poll and bayeux protocol (Comet)

由 梦想与她 提交于 2019-12-03 06:20:45
问题 What is the difference between a simple Async servlet and the Comet / Bayeux protocol? I am trying to implement a "Server Push" (or "Reverse Ajax") kind of webpage that will receive updates from the server as and when events occur on the server. So even without the client explicitly sending a request, I need the server to be able to send responses to the specific client browser. I understand that Comet is the umbrella term for these kind of technologies; with 'Bayeux' being the protocol. But

The client (desktop app) pulls data…but I want the server (web app) to push data

由 ⅰ亾dé卋堺 提交于 2019-12-03 04:28:22
I have a client-server application - wherein the server is essentially an ASP .NET web application and the distributed clients are desktop applications. The clients need to receive some data from the server - when there is new data for the client. Right now, the way this is done is - the client keeps querying a web service every x minutes (say 2 minutes) and keeps checking if there's new data for the client. Ideally, the way it should work is that the desktop app should receive updates as and when they are available, it need not pull from the server; instead the server should be able to push

Implement Comet / Server push in Google App Engine in Python

由 好久不见. 提交于 2019-12-02 20:23:27
How can I implement Comet / Server push in Google App Engine in Python? Moishe Lettvin We just announced the Channel API to do comet push with App Engine apps: http://googleappengine.blogspot.com/2010/05/app-engine-at-google-io-2010.html If you're at Google IO, I'll be talking about this at 1pm tomorrow (on the APIs track): http://code.google.com/events/io/2010/sessions/building-real-time-apps-app-engine-feed-api.html Here's the YouTube video of the session: http://www.youtube.com/watch?v=oMXe-xK0BWA Hopefully last update! This is now released: code.google.com/appengine/docs/python/channel At
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