{
  "title":"Server-sent events",
  "description":"Method of continuously sending data from a server to the browser, rather than repeatedly requesting it (EventSource interface, used to fall under HTML5)",
  "spec":"https://html.spec.whatwg.org/multipage/comms.html#server-sent-events",
  "status":"ls",
  "links":[
    {
      "url":"http://www.html5rocks.com/tutorials/eventsource/basics/",
      "title":"HTML5 Rocks tutorial"
    },
    {
      "url":"http://samshull.blogspot.com/2010/10/ajax-push-in-ios-safari-and-chrome-with.html",
      "title":"Blog post with demo"
    },
    {
      "url":"https://raw.github.com/phiggins42/has.js/master/detect/features.js#native-eventsource",
      "title":"has.js test"
    },
    {
      "url":"https://github.com/Yaffle/EventSource",
      "title":"Polyfill"
    }
  ],
  "bugs":[
    {
      "description":"Reportedly, CORS in EventSource is currently supported in Firefox 10+, Opera 12+, Chrome 26+, Safari 7.0+."
    },
    {
      "description":"In Firefox prior to version 36 server-sent events do not reconnect automatically in case of a connection interrupt ([bug](https://bugzilla.mozilla.org/show_bug.cgi?id=831392))"
    },
    {
      "description":"Firefox currently does not support [EventSource in web/shared workers](https://bugzilla.mozilla.org/show_bug.cgi?id=876498)"
    },
    {
      "description":"Antivirus software may block the event streaming data chunks."
    }
  ],
  "categories":[
    "JS API"
  ],
  "stats":{
    "ie":{
      "5.5":"n",
      "6":"n",
      "7":"n",
      "8":"n",
      "9":"n",
      "10":"n",
      "11":"n"
    },
    "edge":{
      "12":"n",
      "13":"n",
      "14":"n"
    },
    "firefox":{
      "2":"n",
      "3":"n",
      "3.5":"n",
      "3.6":"n",
      "4":"n",
      "5":"n",
      "6":"y",
      "7":"y",
      "8":"y",
      "9":"y",
      "10":"y",
      "11":"y",
      "12":"y",
      "13":"y",
      "14":"y",
      "15":"y",
      "16":"y",
      "17":"y",
      "18":"y",
      "19":"y",
      "20":"y",
      "21":"y",
      "22":"y",
      "23":"y",
      "24":"y",
      "25":"y",
      "26":"y",
      "27":"y",
      "28":"y",
      "29":"y",
      "30":"y",
      "31":"y",
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      "34":"y",
      "35":"y",
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      "47":"y",
      "48":"y",
      "49":"y",
      "50":"y",
      "51":"y",
      "52":"y",
      "53":"y"
    },
    "chrome":{
      "4":"n",
      "5":"n",
      "6":"y",
      "7":"y",
      "8":"y",
      "9":"y",
      "10":"y",
      "11":"y",
      "12":"y",
      "13":"y",
      "14":"y",
      "15":"y",
      "16":"y",
      "17":"y",
      "18":"y",
      "19":"y",
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      "23":"y",
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      "25":"y",
      "26":"y",
      "27":"y",
      "28":"y",
      "29":"y",
      "30":"y",
      "31":"y",
      "32":"y",
      "33":"y",
      "34":"y",
      "35":"y",
      "36":"y",
      "37":"y",
      "38":"y",
      "39":"y",
      "40":"y",
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      "52":"y",
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      "54":"y",
      "55":"y",
      "56":"y",
      "57":"y"
    },
    "safari":{
      "3.1":"n",
      "3.2":"n",
      "4":"n",
      "5":"y",
      "5.1":"y",
      "6":"y",
      "6.1":"y",
      "7":"y",
      "7.1":"y",
      "8":"y",
      "9":"y",
      "9.1":"y",
      "10":"y",
      "TP":"y"
    },
    "opera":{
      "9":"a",
      "9.5-9.6":"a",
      "10.0-10.1":"a",
      "10.5":"a",
      "10.6":"a",
      "11":"y",
      "11.1":"y",
      "11.5":"y",
      "11.6":"y",
      "12":"y",
      "12.1":"y",
      "15":"y",
      "16":"y",
      "17":"y",
      "18":"y",
      "19":"y",
      "20":"y",
      "21":"y",
      "22":"y",
      "23":"y",
      "24":"y",
      "25":"y",
      "26":"y",
      "27":"y",
      "28":"y",
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      "30":"y",
      "31":"y",
      "32":"y",
      "33":"y",
      "34":"y",
      "35":"y",
      "36":"y",
      "37":"y",
      "38":"y",
      "39":"y",
      "40":"y",
      "41":"y",
      "42":"y",
      "43":"y"
    },
    "ios_saf":{
      "3.2":"n",
      "4.0-4.1":"y",
      "4.2-4.3":"y",
      "5.0-5.1":"y",
      "6.0-6.1":"y",
      "7.0-7.1":"y",
      "8":"y",
      "8.1-8.4":"y",
      "9.0-9.2":"y",
      "9.3":"y",
      "10-10.1":"y"
    },
    "op_mini":{
      "all":"n"
    },
    "android":{
      "2.1":"n",
      "2.2":"n",
      "2.3":"n",
      "3":"n",
      "4":"n",
      "4.1":"n",
      "4.2-4.3":"n",
      "4.4":"y",
      "4.4.3-4.4.4":"y",
      "53":"y"
    },
    "bb":{
      "7":"y",
      "10":"y"
    },
    "op_mob":{
      "10":"a",
      "11":"a",
      "11.1":"y",
      "11.5":"y",
      "12":"y",
      "12.1":"y",
      "37":"y"
    },
    "and_chr":{
      "54":"y"
    },
    "and_ff":{
      "50":"y"
    },
    "ie_mob":{
      "10":"n",
      "11":"n"
    },
    "and_uc":{
      "11":"y"
    },
    "samsung":{
      "4":"y"
    }
  },
  "notes":"",
  "notes_by_num":{
    
  },
  "usage_perc_y":86.38,
  "usage_perc_a":0.04,
  "ucprefix":false,
  "parent":"",
  "keywords":"serversent,s-sent-events",
  "ie_id":"serversenteventseventsource",
  "chrome_id":"5311740673785856",
  "firefox_id":"",
  "webkit_id":"",
  "shown":true
}