New event-source element

Issue: Justification for adding the "event-source" element.

Details: event-source is used to "catch" server sent events.

Rationale: Why this Element Should be Added

1. To build Web Applications, it is nice if you can make them listen to things that happen outside the page. This can be done by just connecting to your server and checking whether you updated something. The benefit that event-source offers is having a common standard for doing this (and format for the data). This means you can build a service or three, and other people can build clients to connect to them, without first negotiating with you how to make a connection to your particular service and program specific code to deal with your personal format for sending the events.
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Rationale: Why this Element Should Not be Added

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Advice From Authorities

• Need to Add - Author

Research

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Examples

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Use Cases

• Opera Web Chat - Opera
• Remote Events for XML (REX) - W3C
• Web mail applications could use the events to instantly notify users of new emails without having to reload the page.
• Web based Instant Messaging (e.g. Google Talk, which is built into GMail or Twitter's web interface).
• Interactive web based games. (e.g. Events could be used to notify players of another users move).

Policies, Guidelines, and Law

• Need to Add - Author

Related References

• Event Streaming to Web Browsers - Arve Bersvendsen

Related E-mail

Thread

• Use case - event-source - Charles McCathieNevile (Thursday, 6 September)
  • - Use cases for a few elements: event-source, details, datagrid, datalist, menu, and command - Lachlan Hunt (Thursday, 6 September)

See also

• event-source in the HTML5 draft