#websocket

[ketul99]

Top 9 Benefits of NodeJS WebSocket for Real-Time Scalable Apps

Discover how NodeJS WebSocket boosts real-time app performance with seamless scalability and low-latency communication.

[newcodesociety]

[sagorika]

What are web protocols?

What are #webprotocols? #networkdevices #websocket #protocol #webrtc

Web protocols are an important theme in enabling communication between devices on the internet. Web protocols are the secret handshakes in the digital world where the rules and conventions for data exchange are defined between the network devices. WebSocket They are a set of multiple standards where the WebSocket API is defined by the W3C, and the WebSocket protocol (RFC 6455) and its…

[nile-bits]

Python in the Air: Real-Time Flight Tracking Made Simple

The capacity to follow planes in real-time has grown in value in today’s linked society. Accurate flight data may offer up a world of possibilities for everyone involved in aviation, from hobbyists to developers creating complex systems. This in-depth tutorial will walk you through the whole process of using Python to create a real-time flight tracking system, including everything from data visualization to APIs...

Learn more here:

https://nilebits.com/blog/2024/05/python-real-time-flight-tracking/

[mutter-official]

ohhhhh fuck just realized I'm gonna have to write websocket code in fucking kotlin (or I could use java, but I think that's worse) eventually. websockets in rust were gross enough, I don't even wanna think about how awful they're going to be in kotlin

[haroldfinch07]

Load Balancing Web Sockets with K8s/Istio

When load balancing WebSockets in a Kubernetes (K8s) environment with Istio, there are several considerations to ensure persistent, low-latency connections. WebSockets require special handling because they are long-lived, bidirectional connections, which are different from standard HTTP request-response communication. Here’s a guide to implementing load balancing for WebSockets using Istio.

1. Enable WebSocket Support in Istio

By default, Istio supports WebSocket connections, but certain configurations may need tweaking. You should ensure that:

Destination rules and VirtualServices are configured appropriately to allow WebSocket traffic.

Example VirtualService Configuration.

Here, websocketUpgrade: true explicitly allows WebSocket traffic and ensures that Istio won’t downgrade the WebSocket connection to HTTP.

2. Session Affinity (Sticky Sessions)

In WebSocket applications, sticky sessions or session affinity is often necessary to keep long-running WebSocket connections tied to the same backend pod. Without session affinity, WebSocket connections can be terminated if the load balancer routes the traffic to a different pod.

Implementing Session Affinity in Istio.

Session affinity is typically achieved by setting the sessionAffinity field to ClientIP at the Kubernetes service level.

In Istio, you might also control affinity using headers. For example, Istio can route traffic based on headers by configuring a VirtualService to ensure connections stay on the same backend.

3. Load Balancing Strategy

Since WebSocket connections are long-lived, round-robin or random load balancing strategies can lead to unbalanced workloads across pods. To address this, you may consider using least connection or consistent hashing algorithms to ensure that existing connections are efficiently distributed.

Load Balancer Configuration in Istio.

Istio allows you to specify different load balancing strategies in the DestinationRule for your services. For WebSockets, the LEAST_CONN strategy may be more appropriate.

Alternatively, you could use consistent hashing for a more sticky routing based on connection properties like the user session ID.

This configuration ensures that connections with the same session ID go to the same pod.

4. Scaling Considerations

WebSocket applications can handle a large number of concurrent connections, so you’ll need to ensure that your Kubernetes cluster can scale appropriately.

Horizontal Pod Autoscaler (HPA): Use an HPA to automatically scale your pods based on metrics like CPU, memory, or custom metrics such as open WebSocket connections.

Istio Autoscaler: You may also scale Istio itself to handle the increased load on the control plane as WebSocket connections increase.

5. Connection Timeouts and Keep-Alive

Ensure that both your WebSocket clients and the Istio proxy (Envoy) are configured for long-lived connections. Some settings that need attention:

Timeouts: In VirtualService, make sure there are no aggressive timeout settings that would prematurely close WebSocket connections.

Keep-Alive Settings: You can also adjust the keep-alive settings at the Envoy level if necessary. Envoy, the proxy used by Istio, supports long-lived WebSocket connections out-of-the-box, but custom keep-alive policies can be configured.

6. Ingress Gateway Configuration

If you're using an Istio Ingress Gateway, ensure that it is configured to handle WebSocket traffic. The gateway should allow for WebSocket connections on the relevant port.

This configuration ensures that the Ingress Gateway can handle WebSocket upgrades and correctly route them to the backend service.

Summary of Key Steps

Enable WebSocket support in Istio’s VirtualService.

Use session affinity to tie WebSocket connections to the same backend pod.

Choose an appropriate load balancing strategy, such as least connection or consistent hashing.

Set timeouts and keep-alive policies to ensure long-lived WebSocket connections.

Configure the Ingress Gateway to handle WebSocket traffic.

By properly configuring Istio, Kubernetes, and your WebSocket service, you can efficiently load balance WebSocket connections in a microservices architecture.

[utopicwork]

Wait, duh, data flow can be done through the json api I was talking about for devs for PierMesh applications

[lizclipse]

the thing i find with rust is that things never compile first time (it’s expected so the errors are quite helpful most of the time) but the flow is usually compile to see if you got things right and change if not. however, running first time is downright common, and i love it

[cai-tan]

Hey, Tumblr, I'm angry and frustrated and I'm making it your problem.

Break the Keep Reading only if you either A. have any experience with OBS-Websocket or other such integrations, or B. sincerely wish to partake in my suffering. Warning for excessive cursing, it gets rough.

Update on the whole KT-1632 overlay situation: After a handful of minor technical difficulties and rookie mistakes (hey cat, it would help if you actually turned on the damn websocket before trying to connect to it), I've established a base framework for connecting to OBS Websocket.

Once I had that in place, I started testing out what kind of messages I can get, and uh... I'm already running into a huge problem, here.

See, OBS Websocket 5.0 has the following messages that seem pertinent to my use case: CurrentProgramSceneChanged, SceneTransitionStarted, SceneTransitionEnded, and SceneTransitionVideoEnded. Keep in mind, the only documentation I can access right now, as far as I can tell, is just the 5.0.1 OBS-Websocket.

Here's a refresher on the use case: I want to be able to move elements of my Unity-based stream overlay depending on which scene is currently active in OBS. A wrinkle in this is that I use a custom stinger transition with a specific cut point, like this:

Now, all three events regarding the scene transition only have one piece of data to them: the name of the transition (which is basically always going to be "SniperScope"). The only event that actually tells me what scene is being switched to is the CurrentProgramSceneChanged event.

There is an immediate problem.

Funnily enough, this order of operations is actually backwards from the current documentation:

On the one hand, there could potentially be some sort of delay or other issue involved with WebsocketSharp / Unity that's responsible for this, however in my testing the exact amount of delay and order of operations is entirely consistent every single time I initiate a transition in OBS. The first message almost always arrives instantaneously; it's the other three messages that seem to come whenever they feel like it, and not at all close to what they need to be at.

On the other hand-- wait, what? What's this issue on the official obs-websocket github about--

So you're telling me that SceneTransitionStarted used to have the from and to scenes specified in the event data in version 4, and they removed it in version 5 for literally no other reason than an RPC overhaul? And they haven't added it back in OVER A YEAR?!

Now, the github actually does have an install link for obs-websocket version 4.9.1-compat that should (keyword should, you know how that goes) work with OBS 29 (more specifically, it should work with 28+, which means there isn't even a guarantee for it to work with OBS 29... fucking awesome).

However, uhhhhhh... I cannot find ANY FUCKING DOCUMENTATION FOR 4.9'S PROTOCOL WHATSO-FUCKING-EVER. There is LITERALLY ONLY 5.0 in the readmes and protocol.md docs.

This shit has me pulling my hair. I'm goin' the fuck to sleep. Anyone got any bright fuckin ideas, I'm all fuckin' ears for it in the morning.

[asadmukhtarr]

In modern web applications, real-time communication is a highly demanded feature, especially in chat applications. The ability to send and receive messages in real-time enhances the user experience, making apps more interactive and engaging.

In this tutorial, we’ll walk you through building a real-time chat application using React, Node.js, and Socket.io. Socket.io is a popular JavaScript library that enables real-time, bi-directional communication between web clients and servers.

By the end of this tutorial, you'll have a working real-time chat app where multiple users can communicate instantly.

[di-solutions-blogs]

Hire Expert SignalR Engineers for Real-Time Chat Solutions

​In today's digital landscape, real-time communication has become a cornerstone for engaging and interactive web applications. Whether it's live chat, instant notifications, or collaborative tools, users expect instantaneous responses. This demand underscores the importance of integrating real-time functionalities into web applications. For businesses leveraging the ASP.NET framework, SignalR emerges as a powerful library that facilitates real-time web capabilities. However, to harness the full potential of SignalR, it's imperative to hire skilled SignalR engineers who can seamlessly integrate these features into your applications.​Flexiple+2CSharp+2CSharp+2Microsoft LearnMicrosoft Learn+3Wikipedia+3CSharp+3

Understanding SignalR and Its Significance

SignalR is an open-source library for ASP.NET developers that simplifies the process of adding real-time web functionality to applications. It enables server-side code to push content to connected clients instantly, eliminating the need for clients to repeatedly poll the server for updates. This capability is particularly beneficial for applications requiring high-frequency updates, such as chat applications, live dashboards, and collaborative platforms.​CSharp+1Wikipedia+1Microsoft Learn+2Wikipedia+2Ghanshyam Digital Blog+2

By utilizing SignalR, developers can implement features like two-way communication between the server and client, automatic connection management, and the ability to scale applications efficiently. This makes SignalR an invaluable tool for creating dynamic and responsive user experiences.​GitHub+8Ghanshyam Digital Blog+8CSharp+8CSharp+6Invincix+6CSharp+6

Why Hire Expert SignalR Engineers?

Integrating SignalR into your applications requires a deep understanding of both the library itself and the broader ASP.NET ecosystem. Expert SignalR engineers possess the technical prowess to implement real-time features effectively, ensuring that your application remains robust, scalable, and responsive. They can navigate the complexities of real-time communication, handle connection management adeptly, and optimize performance to deliver seamless user experiences.​GitHub+10CSharp+10Wikipedia+10Flexiple

Moreover, experienced SignalR developers can anticipate potential challenges and implement best practices to mitigate them, ensuring that your application remains reliable under varying loads and usage scenarios.​

Key Skills to Look for When Hiring SignalR Engineers

When seeking to hire SignalR engineers, consider the following essential skills and qualifications:

Proficiency in ASP.NET and C#: A strong foundation in ASP.NET and C# is crucial, as SignalR is built on these technologies.​Microsoft Learn+3Flexiple+3Wikipedia+3

Experience with Real-Time Web Technologies: Familiarity with WebSockets, Server-Sent Events, and long polling techniques is essential for implementing real-time features.​

Understanding of Client-Side Technologies: Knowledge of JavaScript, HTML5, and front-end frameworks enhances the ability to integrate SignalR with the client side effectively.​

Database Integration Skills: Ability to integrate real-time features with databases to ensure data consistency and reliability.​Flexiple

Problem-Solving Abilities: Strong analytical skills to troubleshoot and optimize real-time communication features.​Arc+7Flexiple+7ClickUp+7

Crafting an Effective Job Description for SignalR Engineers

To attract top-tier SignalR talent, your job description should be clear and comprehensive. Here's a template to guide you:

Job Title: SignalR Engineer​Microsoft Learn+7Indeed+7ClickUp+7

Job Summary:

We are seeking a skilled SignalR Engineer to join our dynamic team. The ideal candidate will have extensive experience in developing real-time web applications using SignalR and ASP.NET. You will be responsible for designing, implementing, and maintaining real-time communication features that enhance user engagement and experience.​

Key Responsibilities:

Develop and integrate SignalR-based real-time features into web applications.​

Collaborate with front-end developers to ensure seamless integration between server and client sides.​

Optimize application performance and scalability.​

Troubleshoot and resolve issues related to real-time communication.​

Stay updated with the latest industry trends and technologies to ensure our applications remain current and competitive.​

Qualifications:

Proven experience as a SignalR Engineer or similar role.​Indeed+6ClickUp+6ClickUp+6

Strong knowledge of ASP.NET, C#, and real-time web technologies.​Flexiple+2CSharp+2Wikipedia+2

Experience with client-side technologies such as JavaScript and HTML5.​

Excellent problem-solving skills and attention to detail.​

Strong communication and teamwork abilities.​

Interview Questions to Evaluate SignalR Engineers

To assess the competency of potential hires, consider asking the following questions:

Can you explain how SignalR facilitates real-time communication in web applications? ​This question evaluates the candidate's understanding of SignalR's core functionality and its role in enabling real-time features.​

How does SignalR handle connection management, and what strategies can be employed to ensure scalability? ​This assesses the candidate's knowledge of connection handling and their ability to design scalable solutions.​

Describe a challenging project where you implemented SignalR. What obstacles did you face, and how did you overcome them? ​This provides insight into the candidate's practical experience and problem-solving capabilities.​

How do you ensure data consistency and reliability in a SignalR-based chat application? ​This question probes the candidate's understanding of maintaining data integrity in real-time applications.​

What are the security considerations when implementing SignalR in an ASP.NET application? ​This evaluates the candidate's awareness of potential security risks and their ability to implement appropriate safeguards.​

Benefits of Hiring SignalR Engineers for Real-Time Chat Solutions

Investing in skilled SignalR engineers offers several advantages:​Flexiple+1WiFi Talents+1

Enhanced User Engagement: Real-time features like instant messaging and live notifications keep users engaged and improve overall satisfaction.​

Competitive Advantage: Implementing cutting-edge real-time functionalities can set your application apart in a crowded market.​

Scalability: Expert engineers can design solutions that scale efficiently, accommodating growing user bases without compromising performance.​

Reliability: Experienced developers ensure that real-time features are robust and reliable, minimizing downtime and enhancing user trust.​

FAQs

FAQs (Continued)

Q2: What types of applications benefit most from SignalR integration? A2: Applications that require real-time data updates such as chat apps, live dashboards, collaborative editing tools, online gaming platforms, and stock market trackers greatly benefit from SignalR integration due to its low-latency communication.

Q3: Is SignalR compatible with all browsers and devices? A3: Yes, SignalR provides automatic fallback mechanisms. If WebSockets (its primary transport) aren’t supported, it falls back to Server-Sent Events or long polling, ensuring compatibility across most modern browsers and devices.

Q4: Can SignalR be used with frontend frameworks like React or Angular? A4: Absolutely. SignalR has JavaScript and TypeScript client libraries that make it easy to integrate with popular frontend frameworks including React, Angular, Vue, and others.

Q5: How does SignalR handle scalability in large-scale applications? A5: SignalR can be scaled using backplanes such as Redis or Azure SignalR Service. These tools allow messages to be distributed across multiple servers, ensuring real-time communication even as the application grows.

Q6: What security practices should be followed when using SignalR? A6: Use HTTPS to encrypt data, implement authentication and authorization to control access, validate user inputs, and protect against common threats such as cross-site scripting (XSS) and cross-site request forgery (CSRF).

Conclusion

Incorporating real-time communication into your web applications is no longer a luxury—it's a necessity for staying competitive in today’s fast-paced digital world. SignalR provides a robust framework for implementing these features within ASP.NET environments, offering seamless and scalable real-time capabilities.

By hiring experienced SignalR chat engineers, you ensure that your applications are equipped with the latest in real-time technology, delivering instant feedback, superior user engagement, and a modern interactive experience. Whether you're building a live chat platform, a collaborative workspace, or a real-time notification system, the right talent will make all the difference.

So don’t just build applications—build real-time experiences that users love. Hire expert SignalR engineers and future-proof your digital solutions today.

[ketul99]

Top 9 Benefits of NodeJS WebSocket for Scalable Real-Time Apps

Explore the top 9 key benefits of using NodeJS WebSocket for building scalable real-time applications. Improve performance and reduce latency effectively.

[daniiltkachev]

Building real-time applications with PHP8 and WebSockets

Explore the process of creating real-time applications using PHP and WebSockets, from setup to scaling, with a focus on communication protocols, low latency, and security measures. Learn how to build real-time applications using PHP and WebSockets, covering setup, communication protocols, and scaling strategies. Introduction to Real-Time Applications Real-time applications have become a cornerstone of modern web development, enabling instant communication and data exchange between users and servers. From live chat applications to real-time notifications and collaborative tools, the demand for real-time functionality is ever-growing. Traditional HTTP requests, which follow a request-response model, are not well-suited for real-time communication due to their inherent latency and overhead. This is where WebSockets come into play, offering a full-duplex communication channel that allows for real-time data transfer between the client and server. The Role of WebSockets in Real-Time Communication WebSockets provide a persistent connection between the client and server, enabling both parties to send and receive data at any time without the need for repeated HTTP requests. This is particularly beneficial for applications that require low latency, such as online gaming, financial trading platforms, and live sports updates. Unlike traditional HTTP, which is stateless and requires a new connection for each request, WebSockets maintain a single connection throughout the session, significantly reducing latency and improving performance. Setting Up a WebSocket Server with PHP To build a real-time application with PHP and WebSockets, you'll need to set up a WebSocket server. While PHP is not traditionally known for its real-time capabilities, libraries such as Ratchet and Swoole make it possible to create WebSocket servers in PHP. Here's a step-by-step guide to setting up a WebSocket server using Ratchet: // Install Ratchet via Composer composer require cboden/ratchet // Create a WebSocket server use RatchetMessageComponentInterface; use RatchetConnectionInterface; class MyWebSocket implements MessageComponentInterface { public function onOpen(ConnectionInterface $conn) { echo "New connection! ({$conn->resourceId})n"; } public function onMessage(ConnectionInterface $from, $msg) { foreach ($this->clients as $client) { if ($client !== $from) { $client->send($msg); } } } public function onClose(ConnectionInterface $conn) { echo "Connection {$conn->resourceId} has disconnectedn"; } public function onError(ConnectionInterface $conn, Exception $e) { echo "An error has occurred: {$e->getMessage()}n"; $conn->close(); } } // Run the server $app = new RatchetApp('localhost', 8080); $app->route('/chat', new MyWebSocket, array('*')); $app->run(); This code sets up a basic WebSocket server that listens for incoming connections on port 8080. When a client connects, the server logs the connection and broadcasts any received messages to all connected clients. This is a simple example, but it demonstrates the core functionality of a WebSocket server. Communication Protocols in WebSockets WebSockets use a different communication protocol compared to traditional HTTP. While HTTP is a stateless protocol that requires a new connection for each request, WebSockets use a persistent connection that remains open for the duration of the session. This allows for real-time, bidirectional communication between the client and server. The WebSocket protocol is designed to be lightweight and efficient, with minimal overhead compared to HTTP. This makes it ideal for applications that require low latency and high performance. Handling Real-Time Data and Ensuring Low Latency One of the key challenges in building real-time applications is ensuring low latency. Even a small delay can significantly impact the user experience, especially in applications like online gaming or financial trading. To minimize latency, it's important to optimize both the server-side and client-side code. On the server side, this means using efficient algorithms and data structures, as well as minimizing the amount of data sent over the network. On the client side, it's important to handle incoming data as quickly as possible and update the user interface in real-time. Scaling Real-Time Applications As your real-time application grows, you'll need to scale it to handle an increasing number of concurrent connections. This can be challenging, as WebSocket connections are persistent and require more resources than traditional HTTP connections. One approach to scaling is to use a load balancer to distribute incoming connections across multiple WebSocket servers. Another approach is to use a message broker like RabbitMQ or Redis to handle message distribution between servers. Additionally, you can use a distributed caching system like Memcached or Redis to store session data and reduce the load on your database. Security Measures for Real-Time Applications Security is a critical consideration when building real-time applications, as they often handle sensitive data and are vulnerable to various types of attacks. To protect your application, it's important to implement security measures such as SSL/TLS encryption, authentication, and authorization. SSL/TLS encryption ensures that data transmitted between the client and server is secure and cannot be intercepted by third parties. Authentication and authorization ensure that only authorized users can access your application and perform certain actions. Additionally, you should implement rate limiting and other measures to prevent denial-of-service (DoS) attacks. Best Practices and Tips for Optimizing Performance To ensure optimal performance in your real-time application, it's important to follow best practices and implement performance optimization techniques. Some key tips include: - Minimize the amount of data sent over the network by using efficient data formats like JSON or Protocol Buffers. - Use compression to reduce the size of data transmitted over the network. - Optimize your server-side code to handle incoming connections and messages as efficiently as possible. - Use a content delivery network (CDN) to reduce latency for users in different geographic locations. - Monitor your application's performance and identify bottlenecks using tools like New Relic or Datadog. Conclusion Building real-time applications with PHP and WebSockets is a powerful way to create dynamic, interactive web applications that provide a seamless user experience. By understanding the role of WebSockets, setting up a WebSocket server, and implementing best practices for performance and security, you can create robust and scalable real-time applications that meet the demands of modern web development. Whether you're building a live chat application, a real-time notification system, or a collaborative tool, WebSockets provide the foundation you need to deliver real-time functionality to your users. Read the full article

[one-earbuds1]

Mastering Event-Driven Programming in Python

Me learn Python magic! Make fire with asyncio, make big noise with Tkinter, talk fast with WebSockets, and hunt big data with FastAPI. Me test, me debug, me become Python master! Join now, make code dance!

Yo, fam! 🔥 Get ready to SLAY event-driven programming in Python! 🚀- **asyncio** - Code like a boss without blocking! - **GUI** - Whip up some dope apps with Tkinter! - **WebSockets** - Keep it LIT with real-time updates! - **FastAPI** - Build some next-level microservices! - **Debugging** - Fix your code like a PRO! Grab this book, dive in, and LEVEL UP your Python game! 💪

Book -> Free

[khushnuma123]

How WebSockets Enable Real-Time Communication for Full Stack Developers

[patoliyainfotech]

Top Tech Must-Haves for Building a Secure and Scalable Dating App

People connect through dating apps, but developing a successful relationship requires more than just matching profiles. Selecting the best technologies for security, scalability, and user experience is essential if you want to develop a dating app that stands out.

🚀 Backend Technologies, The Power Behind the App The backend is key to features like matching, messaging, and geolocation. Your choices here will impact performance and future-proofing.

Node.js: Perfect for real-time communication like messaging and alerts.

Python with Django: Ideal for advanced match algorithms and data security.

Ruby on Rails: Fast development for MVPs, with built-in security for handling user data.

💬 Real-Time Communication: Keep Users Engaged

WebSockets: Instant messaging and push notifications with low latency.

WebRTC: High-quality, secure voice and video calls without plugins.

🧠 Matching Algorithms & AI: Get the Right Matches Customizing the user experience with machine learning increases engagement and success rates, whether the algorithms are location-based or driven by AI. In order to provide personalized match recommendations, behavioral and AI systems monitor interactions.

🛡 Security & Scalability: Protecting Users and Growing The flexibility, security, and scalability required to handle an expanding user base are provided by frameworks like Ruby on Rails, Django, and Laravel, while React Native guarantees flawless cross-platform performance.

Ready to create a game-changing dating app?