Comet (programming): Difference between revisions

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===First Comet applications===

The first set of Comet implementations dates back to 2000,<ref name="CometDaily_History">{{cite web |url=http://cometdaily.com/2007/10/19/comet-and-push-technology/ |title=CometDaily: Comet and Push Technology |access-date=2007-12-15 |archive-url=https://web.archive.org/web/20071113174053/http://cometdaily.com/2007/10/19/comet-and-push-technology/ |archive-date=2007-11-13 |url-status=dead }}</ref>{{unreliable source?|date=November 2017}} with the [[Pushlets]], [[Lightstreamer]], and KnowNow projects. [[Pushlets]], a framework created by Just van den Broecke, was one of the first<ref name="pushlets-javaworld">Just van den Broecke (1 March 2000). “[http://www.javaworld.com/article/2076063/java-web-development/pushlets--send-events-from-servlets-to-dhtml-client-browsers.html Pushlets: Send events from servlets to DHTML client browsers] {{Webarchive|url=https://web.archive.org/web/20140804175811/http://www.javaworld.com/article/2076063/java-web-development/pushlets--send-events-from-servlets-to-dhtml-client-browsers.html |date=2014-08-04 }}”. JavaWorld. Retrieved 1 August 2014.</ref> open source implementations. Pushlets were based on server-side Java servlets, and a client-side JavaScript library. Bang Networks{{snd}} a [[Silicon Valley]] start-up backed by [[Netscape]] co-founder [[Marc Andreessen]]{{snd}} had a lavishly- financed attempt to create a real-time push standard for the entire web.<ref>{{cite web

|url=http://news.cnet.com/2100-1023-255088.html

|title=Will the "refresh" button become obsolete?

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}}</ref>

* Use of plugins, such as [[Java applet]]s or the proprietary [[Adobe Flash]] (using [[Real-Time Messaging Protocol|RTMP]] protocol for data streaming to Flash applications). These have the advantage of working identically across all browsers with the appropriate plugin installed and need not rely on HTTP connections, but the disadvantage of requiring the plugin to be installed

* [[Google]] announced<ref>App, The. (2010-12-02) [httphttps://googleappengine.blogspot.com/2010/12/happy-holidays-from-app-engine-team-140.html Google App Engine Blog: Happy Holidays from the App Engine team - 1.4.0 SDK released]. Googleappengine.blogspot.com. Retrieved on 2014-04-12.</ref> a new Channel API for [[Google App Engine]],<ref>Paul, Ryan. (2010-12-06) [https://arstechnica.com/web/news/2010/12/app-engine-gets-streaming-api-and-longer-background-tasks.ars App Engine gets Streaming API and longer background tasks]. Ars Technica. Retrieved on 2014-04-12.</ref> implementing a Comet-like API with the help of a client JavaScript library on the browser. This API has been deprecated.<ref>{{cite web |url=https://cloud.google.com/appengine/docs/standard/java/javadoc/com/google/appengine/api/channel/package-summary |title=Package com.google.appengine.api.channel |date=2019-11-16 |access-date=2020-04-30 |quote=This API has been deprecated. }}</ref>

==See also==