server-sent-events

问题 Our server is used to Nginx as webserver and add compile module of nginx_push_stream. Before used to push stream had used to Restfull then changed to Websocket but websocket sometimes loss when the client or server had small bandwith. At 2019 year, from Websocekt to Server Sent Event (SSE) / event-source such as event stream or text/event-stream to reduce loss both of client or server. Please anyone have any idea for library event stream is able to use to android client and iPhone client. I

问题 I've looked around and it seems as if all the ways to implement SSEs in Node.js are through more complex code, but it seems like there should be an easier way to send and receive SSEs. Are there any APIs or modules that make this simpler? 回答1: You should be able to do such a thing using Socket.io. First, you will need to install it with npm install socket.io . From there, in your code you will want to have var io = require(socket.io); You can see more in-depth examples given by Socket.IO You

问题 I've looked around and it seems as if all the ways to implement SSEs in Node.js are through more complex code, but it seems like there should be an easier way to send and receive SSEs. Are there any APIs or modules that make this simpler? 回答1: You should be able to do such a thing using Socket.io. First, you will need to install it with npm install socket.io . From there, in your code you will want to have var io = require(socket.io); You can see more in-depth examples given by Socket.IO You

问题 I am trying to add SSE(Server sent events) in NodeJs, But when I am sending response using res.write() the data is not getting sent, but only after writing res.end() all data is being sent at the same time. I have already found many posts on Github, StackOverflow, regarding this issue and everywhere it is mentioned to use res.flush() after every res.write() but that too isn't working for me, also I am not using any compression module explicitly. Server-Side Code Can anyone please tell me is

问题 I have an admin dashboard where I want an alert to be fired whenever a user is created (on a separate page). The code below works, however, there's a race condition. If 2 users are created very close together, it will only fire once. class User < ApplicationRecord after_commit :notify_creation, on: :create def notify_creation ActiveRecord::Base.connection_pool.with_connection do |connection| self.class.execute_query(connection, ["NOTIFY user_created, '?'", id]) end end def self.listen_to

问题 I am writing a web app where multiple listeners(Evcentsource SSE clients JS) will be connected to my server . what i want to do is Store SSE emitter per connected listener : can be done in memory or any other means by assigning id to each client I am able to achieve this so far Now the question ; How do i send a response/event to specific client connected to my web app ? while doing this SSEEmmiters stored are either getting completed or timed out. how do i prevent this ? how do i keep

问题 I am using server sent events in MEAN stack. I am able to push data from server to client whenever required. But one thing i noticed that even if i am the only client hitting the server. There are multiple listeners for me and events are broadcast to say 40 listeners ( if i wait long enough for the client to reconnect 40 times ). Multiple listeners are also created when user reloads . How can i limit the listeners to say 1 listener to per event per client . Is this even possible with server

问题 I am getting started with Server Sent Events (SSE) since my web app requires receiving real time updates from the server. It does not require sending anything to the server, therefore SSE was chosen over Websockets. After reading through some examples, I have the following code: On my server, in ./src/routers/mainRouter.js I have: router.get('/updates', (req, res) => { res.writeHead(200, { 'Content-Type': 'text/event-stream', 'Cache-Control': 'no-cache', 'Connection': 'keep-alive' }) //

问题 I am getting started with Server Sent Events (SSE) since my web app requires receiving real time updates from the server. It does not require sending anything to the server, therefore SSE was chosen over Websockets. After reading through some examples, I have the following code: On my server, in ./src/routers/mainRouter.js I have: router.get('/updates', (req, res) => { res.writeHead(200, { 'Content-Type': 'text/event-stream', 'Cache-Control': 'no-cache', 'Connection': 'keep-alive' }) //

问题 I have a usecase for which I would like to know if HTML5's Server-sent-Events is suitable. Multiple clients (Javascript+HTML5 browsers) connect to the web server (with a Java EE backend). Each client could be looking at a different view at any time, depending on what is their object of interest. My Question is: How to keep multiple clients (on different views) up-to-date on the updates happening on the server-side, without flooding all clients with all updates on all views ? Important points