Thanks everyone for the excellent feedback.

Someone sent me this message:

        Do a search for pushlets, or alternatively
        I think the generic technology  might be
        called comet. Basically the server sends
        streaming XML or _javascript_, with an
        occasional heartbeat pulse/element to
        keep the connection alive.

That sounded promising. I did a search for "pushlets" and found this site with example pushlets:

http://www.pushlets.com/pushlet/examples/pushlet.html

Unfortunately, it doesn't seem to have a pushlet that emits XML-formatted data.

Is there a web site that emits a continuous stream of XML-formatted time-and-temperature data? That is, when I connect to the web site it returns the root element, a location, and the current time and temperature:

<TimeAndTemperature>
      <Location>Boston</Location>
      <Weather>
        <Time>2014-05-22T05:22:10Z</Temperature>
        <Temperature>51 degrees Fahrenheit</Temperature>
      </Weather>

One second later the web site sends the second <Weather> element:

      <Weather>
        <Time>2014-05-22T05:22:11Z</Temperature>
        <Temperature>51 degrees Fahrenheit</Temperature>
      </Weather>

One second later the web site sends the third <Weather> element:

      <Weather>
        <Time>2014-05-22T05:22:12Z</Temperature>
        <Temperature>51 degrees Fahrenheit</Temperature>
      </Weather>

The web site continues to send a <Weather> element every second until I disconnect.

Does such a web site exist?

/Roger

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