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/*
Helper Server -
Send a Request with ?queryResult - response will be the
queryString of the next request.
*/
// small red image
const IMG_BYTES = atob(
"iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12" +
"P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg=="
);
function handleRequest(request, response) {
// avoid confusing cache behaviors
response.setHeader("Cache-Control", "no-cache", false);
// save the object state of the initial request, which returns
// async once the server has processed the img request.
if (request.queryString.includes("wait")) {
response.processAsync();
setObjectState("wait", response);
return;
}
response.write(IMG_BYTES);
// return the result
getObjectState("wait", function(queryResponse) {
if (!queryResponse) {
return;
}
queryResponse.write("1");
queryResponse.finish();
});
return;
}
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