delayedframe.sjs - mozsearch

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function getFileStream(filename)

  // Get the location of this sjs file, and then use that to figure out where

  // to find where our other files are.

  var self = Components.classes["@mozilla.org/file/local;1"]

                       .createInstance(Components.interfaces.nsIFile);

  self.initWithPath(getState("__LOCATION__"));

  var file = self.parent;

  file.append(filename);

  dump(file.path + "\n");

  var fileStream = Components.classes['@mozilla.org/network/file-input-stream;1']

                     .createInstance(Components.interfaces.nsIFileInputStream);

  fileStream.init(file, 1, 0, false);

  return fileStream;

var gTimer;

function handleRequest(request, response)

  response.processAsync();

  response.setStatusLine(request.httpVersion, 200, "OK");

  response.setHeader("Content-Type", "image/gif", false);

  var firststream = getFileStream("threeframes-start.gif");

  response.bodyOutputStream.writeFrom(firststream, firststream.available())

  firststream.close();

  gTimer = Components.classes["@mozilla.org/timer;1"].createInstance(Components.interfaces.nsITimer);

  gTimer.initWithCallback(function()

    var secondstream = getFileStream("threeframes-end.gif");

    response.bodyOutputStream.writeFrom(secondstream, secondstream.available())

    secondstream.close();

    response.finish();

    // This time needs to be longer than the animation timer in

    // threeframes-start.gif. That's specified as 100ms; just use 5 seconds as

    // a reasonable upper bound. Since this is just a crashtest, timeouts

    // aren't a big deal.

  }, 5 * 1000 /* milliseconds */, Components.interfaces.nsITimer.TYPE_ONE_SHOT);