Introduction to WebSockets
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This document introduces WebSockets as a new technology for bidirectional communication between a browser and server. It discusses how WebSockets improve on older techniques like Ajax and Comet by allowing real-time data updates with less overhead. Example uses of WebSockets include chat applications, displaying stock prices, and collaboration tools. While browser support is still limited, libraries exist for many programming languages to create WebSocket servers.
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Splunk Security Update | Public Sector Summit Germany 2025
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At S&P Global Commodity Insights, having a complete view of global energy and commodities markets enables customers to make data-driven decisions with confidence and create long-term, sustainable value. 🌍
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TrsLabs - Fintech Product & Business Consulting
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Introduction to WebSockets
- 1. An Introduction to WebSockets Steve Agalloco May 20th 2010 twitter.com/anno beforeitwasround.com steveagalloco.com
- 2. About Me • New to Charlotte (Hello!) • Developer at TradeKing • recovering Java programmer, currently working primarily with Ruby and Rails • interested in NoSQL, Node, HTML5
- 3. Realtime Web • Round Trips - meta refresh, onchange events • Ajax • Comet - long polling • Flash XMLSocket
- 4. The ugly side of Ajax
- 5. The ugly side of Comet
- 6. WebSockets • Part of HTML5 • Bi-directional communication between browser and server • Works with Proxy/Firewall • Less network overhead • Faster than Ajax/Comet
- 7. More Details • It’s own protocol (ws://) • different headers • Language support - libraries available for Ruby, Node.js, Erlang, PHP, Java, Python, etc.
- 8. Possible Uses • Realtime Data - Chat, Stocks, Sports • Presence • Collaboration • Notifications
- 9. Browser Support • Chrome and WebKit support now • Safari 4.x (anticipated) • Firefox 4.0 (expected in November 2010) • Internet Explorer (no indications it’ll be supported in IE 9) • Fallback to our old friend... Flash http://github.com/gimite/web-socket-js
- 10. Client-Side Code
- 11. Example
- 12. In the Wild • http://hummingbirdstats.com • http://pusherapp.com
- 13. Thank You! • http://github.com/spagalloco - Fork me! • http://github.com/spagalloco/websockets- example