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/**
* Adapted from https://searchfox.org/mozilla-central/source/layout/reftests/backgrounds/delay-image-response.sjs
*/
"use strict";
// A 1x1 PNG image.
const IMAGE = atob(
"iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAA" +
"ACnej3aAAAAAXRSTlMAQObYZgAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII="
);
// To avoid GC.
let timer = null;
function handleRequest(request, response) {
const query = {};
request.queryString.split("&").forEach(function (val) {
const [name, value] = val.split("=");
query[name] = unescape(value);
});
response.setStatusLine(request.httpVersion, 200, "OK");
response.setHeader("Content-Type", "image/png", false);
// If there is no delay, we write the image and leave.
if (!("delay" in query)) {
response.write(IMAGE);
return;
}
// If there is a delay, we create a timer which, when it fires, will write
// image and leave.
response.processAsync();
const nsITimer = Ci.nsITimer;
timer = Cc["@mozilla.org/timer;1"].createInstance(nsITimer);
timer.initWithCallback(
function () {
response.write(IMAGE);
response.finish();
},
query.delay,
nsITimer.TYPE_ONE_SHOT
);
}