Introduction to WebSockets

on YouTube ↗01h 28m

" summary

Demonstrates a working Bitcoin RT demo that replaces long polling with a single persistent WebSocket connection, sending compact JSON frames (trade amount, exchange) over an HTTP 101 upgrade; shows node + SockJS fallback, D3.js for visualization and MongoDB for storage, and Java options: Tomcat’s WebSocket servlet, Atmosphere for portable fallbacks and Vert.x. Highlights real issues: ~40% IE share worldwide (≈90% in China) and proxy/keep‑alive problems, so native WebSockets work but fallbacks and heartbeat protocols remain essential.

AI-written summary · about

" chapters (12)

1. 0:00Introduction to WebSockets
2. 1:49Understanding WebSockets
3. 7:17Bitcoin Real-time demo
4. 14:51Why not use WebSockets?
5. 17:54Challenges in the wild
6. 27:54Maintaining connection
7. 32:28History and protocol specs
8. 50:33WebSocket libraries and fallback
9. 58:16Java WebSocket support
10. 1:04:56JSR 356 Java API
11. 1:07:15Using Atmosphere for Java
12. 1:12:32Conclusion and Q&A

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