function handleRequest(request, response) { response.setHeader("Cache-Control", "no-cache", false); var query = request.queryString; switch (query) { case "reset": response.setHeader("Content-Type", "application/ecmascript", false); setState("1l", ""); setState("1v", ""); setState("2l", ""); setState("2v", ""); break; case "1l": case "1v": case "2l": case "2v": setState(query, getState(query) + "load"); response.setStatusLine("1.1", 302, "Found"); // redirect to a solid blue image response.setHeader("Location", "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAIAAACQd1PeAAAADElEQVQI12NgYPgPAAEDAQDZqt2zAAAAAElFTkSuQmCC"); response.setHeader("Content-Type", "text/plain", false); break; case "waitforresult": response.setHeader("Content-Type", "application/ecmascript", false); response.write("var start = Date.now();\n"); // fall through! case "waitforresult-internal": response.setHeader("Content-Type", "application/ecmascript", false); response.write("if ('" + getState("1l") + "' == 'load' && '" + getState("1v") + "' == '' && '" + getState("2l") + "' == 'load' && '" + getState("2v") + "' == '') { \n"); response.write("setTimeout(function() {\n"); response.write("var s = document.createElement('script');\n"); response.write("s.src = 'visited_image_loading.sjs?result';\n"); response.write("document.body.appendChild(s);"); response.write("}, Math.max(100, 2 * (Date.now() - start)));\n"); response.write("} else setTimeout(function() {\n"); response.write("var s = document.createElement('script');\n"); response.write("s.src = 'visited_image_loading.sjs?waitforresult-internal';\n"); response.write("document.body.appendChild(s);"); response.write("}, 10);\n"); break; case "result": response.setHeader("Content-Type", "application/ecmascript", false); response.write("is('" + getState("1l") + "', 'load', 'image 1l should have been loaded once')\n"); response.write("is('" + getState("1v") + "', '', 'image 1v should not have been loaded')\n"); response.write("is('" + getState("2l") + "', 'load', 'image 2l should have been loaded once')\n"); response.write("is('" + getState("2v") + "', '', 'image 2v should not have been loaded')\n"); response.write("SimpleTest.finish()"); break; } }