Questions tagged [websockets]

WebSocket is an API and a protocol for bi-directional, full-duplex communication that is closely associated with HTML5 and implemented in recent versions of most web browsers.

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Fetching data in separate servers

I have a monolithic REST API and a separate WebSocket server that’s used for real-time updates. They're both separate so that I can scale them independently. The API fetches data from the database and ...
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65 views

How to architect a collaborative web application for live updates?

When using collaborative applications like issue trackers, planning tools, etc. it can be very frustrating to have to keep hitting refresh to make sure you're viewing the same state as your colleagues....
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HTTP polling vs WebSocket for very small payloads that don't change often

In our team we are currently discussing which technology makes more sense for an upcoming feature - HTTP polling vs WebSocket. To give some context: We are developing a TV streaming application (...
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204 views

How do big messaging apps keep users connected

So let's take the Facebook Messenger app for example. When you send a message it instantly gets sent to the other user you are writing to.I believe they use some kind of WebSockets to send these ...
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63 views

Websockets vs Ajax for live search

For building a simplistic live search system, I trying to decide whether to use Websockets or Ajax. Implementation wise, for every letter the user types (or maybe every 0.5 seconds), a database query ...
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Is Kafka needed in a realtime chat application?

I'm developing a realtime chat application with an Angular frontend and Java backend. I've found a couple of examples that resemble what I am trying to achieve, such as: https://medium.com/swlh/...
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Communicating state from the backend to the frontend while the user is logged in

Please note: although this question mentions Angular and Spring Boot (Java), and it would be great to get an answer from someone with experience in that stack, I think this is more of an architectural ...
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Ajax with interval vs WebSocket

I am currently developing a script for real estate which tries to find a match between your products and your clients needs. So I need to give the user a notification whenever a match is found, I am ...
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52 views

Better solution instead of sending an image as binary through websocket for real time chat app

I'm building a real time chat application like Whatsapp. I have a websocket server with node+express, but I'm a bit confused on which flow I should use. I'm considering sending the image as binary ...
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advice for web communication protocol for “streaming” multiple JSON objects to multiple clients

As a hobby / to learn I am building an app in JavaScript using Node.js where a component of it will take input from a client, send it to a server, and then broadcast it to other clients. For ...
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How do I keep users of a PWA up to date when the application is in idle / hibernate?

So I'm currently building a .Net Blazor PWA, and I was wondering how the behaviour of my application looks like when it is installed on a mobile device, and the user is done with the app for the time ...
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How to make distinction between user establishing another connection and different user, under same network, establishing new connection

Sorry, the title of my question might be a little confusing. I have this online game that utilizes websocket connections for the users to initialize so my server can broadcast messages to all them in ...
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NodeJS Websocket Connection to Multiple Sockets

On my backend NodeJS server I need to be able to open up and keep open 1-20k websocket connections at the same time. I will receive a small amount of data from these websocket connections every few ...
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How to do loadbalancing for collaborative editing with multi-az and geoproximity based routing policy

I am planning a project which has users collaboratively editing a document. To provide good latency to users, I am planning to deploy in multiple AWS regions with active-active mongodb replicas with ...
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59 views

Strategy for a worker microservice to communicate with GraphQL API

I am trying to find the best way for a microservice to communicate with GraphQL Basic scenario: Client subscribed to GraphQL via Subscriptions (WebSockets) Client creates an Item using Mutation which ...
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Where to store (keep) websockets events?

I have an application that uses MySQL as the database. When a user open a specific page, the app sends a websocket event to indicate all the other team members that this user is seeing the current ...
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193 views

SignalR Handle Multiple Clients in my Scenario

I currently have multiple clients who need to be informed when a customer creates a new order. Each customer is registered to an individual client and customers create orders on my website (each order ...
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Using WebSockets for event notifications along side a REST API with scaleable architecture

I have a REST API which can be called with HTTP requests and is connected to a database to store resource state. There is a particular Parent resource that has a collection of Child resources and if a ...
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74 views

Using same flask server for HTTP and Websockets

I have a simple app which has the following architecture: front-end api/ back-end server.py api/ utils/ The app is already using http based server which is started/configured in the ...
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751 views

Android Chat Application Architecture with websocket

I'm trying to build chat application in Android (future maybe webapp also) using websockets. The purpose of this project is to familiar with websockets, get know websockets and real time applications. ...
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198 views

Is using web sockets between client-server to tranfer files the right approach? ( when multiple users connected on the same socket connection )

I am currently designing a system that lets users connect their Cloud Storage such as Google Drive, Dropbox etc and also to their physical filesystem (personal laptop/ ftp server etc.) and then can ...
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217 views

Instant Messaging with WebSocket

I am trying to develop an Instant messenger using WebSocket. I have multiple instances of my servers running (say server1 , server2). Two users(say userA , userB) who wants to chat with each other. ...
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190 views

Should a REST API be used when a websocket is already open?

Background: I was working on a web-socket application integrated into a more conventional http request based website that uses REST APIs. Task: I need to retrieve user history from the database for ...
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124 views

Architecture to populate graphs from real-time data

I'm developing an application where graphs need to be populated from realtime data. The Real-Time data comes from a Kafka Queue. How should I send this real-time data to the front-end which is in ...
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4k views

Do I actually need a message broker or are websockets enough?

The website I am building has a real-time messaging component. The backend is built with Flask and I have integrated Flask-SocketIO to handle Websocket connections when users are on the messaging page....
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131 views

Application for forwarding data from websocket to HTTP method

I have a Raspberry Pi with a ConBee 2 (ZigBee) interface connected. The ConBee provides a websocket I can connect to to get push notifications on sensor changes. And I want to forward those ...
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293 views

buffering messages and send after reconnect

I'm looking for a solution for this, buffering messages in an array and send them after web-socket reconnect. I can check the socket client and push messages to an array when connection is lost and ...
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654 views

Notify thousands of clients with websockets, are there any caveats?

I'm building a web app, where users can create locations, which are displayed on a map. Also, users can click on the map objects in order to get to a place details page where further interactions ...
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125 views

Potential Solutions to loading Javascript classes unknown at run time

I'm looking for some advice or potential options for loading javascript files in real time long after the DOM has fully loaded. Those javascript files need to be sent over a WebSocket connection, and ...
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317 views

Web turn based game Architecture. With or without websockets?

I have written a turn based game (Dominoes) using Scala and Akka actors, where a Server manage all the game state and the clients (Players) receive the new state every time one of them plays a card. ...
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725 views

Advantages of using a message broker for scaling websocket client-to-client communications

I'm designing a system where pairs of clients need to exchange messages proxied by a backend service. My initial plan was to use websockets and have the clients connect to a single websocket server, ...
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106 views

Best way to make insert data in logs web API. REST or WebSockets

I want to make a centralized log web API, so it will have a large amount of data per seconds. the logs will comming from others WEB API I was thinking if i make the REST API, all of the POST made ...
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861 views

Real Time Web Sockets Architecture

I am confused here on how real time analytics is accomplished with web sockets when data is inserted into the system via a REST API. In my (admitted immature) understanding of web sockets, you have ...
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92 views

What pattern should I use to implement a Message Routing mechanism?

I'm hoping someone can give some guidance on an issue I'm having. I have: A WebSocket service, where I have a single method on the server that handles all traffic. Lots of different kinds of ...
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1k views

Best practice with SignalR communication

I'm working on a project that involves online purchases. I have my web api in C# and my client in REACT (javascript). Server and client are connected with SignalR. I want that when an ORDER is ...
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63 views

Two Web clients and Java server (HTTP and Websockets)

I have 3 software components of a Web Application: 1. JS-client application 1 (JSApp1) 2. Java Spring (REST and Websockets) server app (SRV) 3. JS-client application 2 (JSApp2) My current task is to ...
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49 views

How do I choose the right Websocket API

I'm doing a project where I have to control a live DALI controller and I'm sending data from the website to the controller with Websocket. How do I know what Websocket to use? At the moment I'm ...
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2k views

Is there an equivalent to HTTP status codes for WebSockets messages?

I'm developing a WebSocket API and I was wondering if there was either a standard or best practice for responding to client messages. For example, if my API is expecting only stringified numbers but ...
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1answer
292 views

Resolving request congestion at browser by using socket as “fast lane”, any consequence?

I have received multiple reports from users of a Web-based GIS application we have rolled out one to two year ago, complaining the application becomes unstable/unresponsive. After a brief ...
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363 views

Ensuring reliable delivery of messages over websockets?

I am building a comet service which will push new data to the client on mobile devices. For this, I am using websockets to deliver messages to the client. The problem I am facing here is the ...
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Is there a need to add web sockets for push notifications

Currently we have an application that, upon certain events, will send notifications to users. We use SQS to handle the actual delivery of the notifications. As an example, when a user registers an ...
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1answer
176 views

Architecture for communication between multiple backend systems and IoT devices via WebSockets

I have a scenario in which thousands of IoT devices -- each fitted with a sim card -- are geographically distributed and shall be controlled individually. Therefore each IoT device has a WebSocket ...
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369 views

Migrating a client from a REST API to a WebSocket one

I'm working on a system that integrates with several third party services via APIs. Those services require authentication. Usually, the services are implemented as REST APIs using HTTP. My system ...
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1answer
166 views

Design: HTTP and Websockets working together

I'm at a bit of crossroads here and I wanted to ask the opinion of the community. I am creating a chat application for our company. Now, like every chat application out there, the messages are saved ...
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975 views

WebSockets vs Ajax call for scheduled event?

Intro I have been weighing the pros and cons of using WebSockets vs. an Ajax call for an event which will happen every x number of seconds (in this case 5). I'll start by explaining the scenario. ...
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How long should Websockets maintain connection

I've created a rest generic service which additionally consume a websocket per resource my websocket code looks like so: initialize(hubSubRoute: string): void{ const accessToken = this....
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Evaluate http reqres vs websockets for geolocation based broadcasts

My use case is that I have a real-time broadcast app where users get feed items based on a geolocation, i.e. a user will receive posts that were broadcasted from within a user-defined radius where (s)...
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66 views

Realtime Live Auto updates for web applications

It's about trying to understand the architecture behind how updates to web application is done. I've been working on a non-public website that has bunch of records displayed in a UI, now the ...
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507 views

Are AJAX calls fully replaceable by requests sent via WebSockets?

I am redeveloping an application with the aim of going along with the more modern techniques. That is how I came across Socket.io, which I integrated with express.js. I implemented live searching ...
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WebSocket Client as an always running service

The company with which we are integrating is a door security company that makes RFID cards and door scanners. You scan your card, the door opens and lets you in. They allow 3rd party integration via ...