====== WebSocket ======
  * [[http://www.html5korea.co.kr/html5lec/900|HTML5 팁&강의 - 웹소켓(WebSocket) 시작하기]]
  * [[http://helloworld.naver.com/helloworld/1336|WebSocket과 Socket.io]]
  * [[https://developer.mozilla.org/en-US/docs/WebSockets|MDN WebSockets]]
  * [[http://www.html5rocks.com/en/tutorials/websockets/basics/|Introducing WebSockets: Bringing Sockets to the Web - HTML5 Rocks]]
  * [[http://www.slideshare.net/trustinlee/websocket|WebSocket 기반 쌍방향 메시징]]
  * [[http://java.dzone.com/articles/overview-java-api-websocket|An Overview of the Java API for WebSocket | Javalobby]]
  * [[http://adrenal.tistory.com/20|시나몬 브레드 | webSocket 으로 개발하기 전에 알고 있어야 할 것들]]
  * [[https://ably.com/blog/introducing-the-websocket-handbook|The WebSocket Handbook: learn about the technology behind the realtime web | Ably Blog: Data in Motion]]