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What are the server-sent events in HTML5? |
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Answer» The events pushed from the webserver to the BROWSERS are called server-sent events. DOM elements can be continuously updated using these events. This has a major advantage over straight-up polling. In polling, there is a LOT of overhead since every time it is ESTABLISHING an HTTP connection and tearing it down whereas, in server-sent events, there is one long-lived HTTP connection. To use a server-sent EVENT, <eventsource> element is used. The src attribute of this element specifies the URL from which sends a data stream having the events. <eventsource src = "/cgi-bin/myfile.cgi" /> |
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