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WebSockets Crash Course Handshake Usecases Pros amp Cons and more
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=2Nt-ZrNP22A
WebSockets technology is a bidirectional, full-duplex protocol for communication between client and server over the web. It has been standardized in 2011 and its fully compatible with HTTP. This protocol enables realtime applications such as chatting, notifications, live feed , multiplayer gaming and otheruse cases. • In this video we will explain what WebSockets are and why it was invented. we will then build a server and client using WebSockets. We will also talk about the pros and cons of WebSockets, and discuss some alternatives to this technology • Chapters • 0:00 Intro • 2:00 HTTP • 5:40 WebSockets • 8:00 WebSockets Handshake • 11:20 WebSockets Usecases • 14:30 WebSockets Example Code • 36:40 WebSockets Pros and Cons • 42:10 Do you have to use webSockets? • Source Code in the video for WebSockets • https://github.com/hnasr/javascript_p... • • HTTP • talk about request-response show a slide. Client initiate request all the time. Imagine building a chatting app? • WebSockets • Slide showing bidrectional full duplex standard web • How WebSockets Work? • WebSockets handshake • Initial request is always HTTP which we all know creates a tcp connection, that request then http upgrade tells the server to use it as bidirectional. • Once done switches to binary protocol. • Ws:// wss:// protocol • WebSocket use cases • Chatting • Live feeds • Multiplayer gaming • Progress bar/ logging/ uploading.. • WebSockets example (Server/Client) • WebServers Pros and Cons • Pros • 1. Full-duplex no need for constant polling • 2. compatible with HTTP, so proxies know to deal with it • 3. Firewalls won’t block it doesn’t use a special port • Cons • 1. Proxying is tricky, lots of proxies and transparent proxies don’t support it yet • 2. Layer 7 load balancing is tricky, timeouts on the load balancer. • 3. More complicated to implement (simple telnet use HTTP) • 4. Not ideal for all use cases - (microservices) • • Do you have to use Web Sockets ? ( alternatives ) • It is important to note that WebSockets is not the only HTTP realtime based solution, there are other ways to achieve real time such as eventsource, and long polling. • Load Balancing with WebSockets (bonus) • layer 4 • Layer 7 (tunnel) • Longpolling • Eventsource • WebSockets • • Sources: • https://developer.mozilla.org/en-US/d... • https://www.ably.io/concepts/websockets • / ljssosnw6y • https://blog.stanko.io/do-you-really-... • • Cards • HTTP Crash Course • Hyper Text Transfer Protocol Crash Co... • TLS • Transport Layer Security, TLS 1.2 and... • What is a Web Servers • What are web servers and how do they ... • Layer 4 vs Layer 7 Load Balancing • Load balancing in Layer 4 vs Layer 7 ... • • • Support my work on PayPal • https://bit.ly/33ENps4 • • Become a Member on YouTube • / @hnasr • 🧑🏫 Courses I Teach • https://husseinnasser.com/courses • 🏭 Backend Engineering Videos in Order • https://backend.husseinnasser.com • 💾 Database Engineering Videos • • Database Engineering • 🎙️Listen to the Backend Engineering Podcast • https://husseinnasser.com/podcast • Gears and tools used on the Channel (affiliates) • 🖼️ Slides and Thumbnail Design • Canva • https://partner.canva.com/c/2766475/6... • 🎙️ Mic Gear • Shure SM7B Cardioid Dynamic Microphone • https://amzn.to/3o1NiBi • Cloudlifter • https://amzn.to/2RAeyLo • XLR cables • https://amzn.to/3tvMJRu • Focusrite Audio Interface • https://amzn.to/3f2vjGY • • 📷 Camera Gear • Canon M50 Mark II • https://amzn.to/3o2ed0c • Micro HDMI to HDMI • https://amzn.to/3uwCxK3 • Video capture card • https://amzn.to/3f34pyD • AC Wall for constant power • https://amzn.to/3eueoxP • • Stay Awesome, • Hussein
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