"use strict"; function handleRequest(request, response) { Cu.importGlobalProperties(["URLSearchParams"]); let qs = new URLSearchParams(request.queryString); let asset = qs.get("as"); let hinted = qs.get("hinted") !== "0"; // eslint-disable-next-line mozilla/use-services let uuidGenerator = Cc["@mozilla.org/uuid-generator;1"].getService( Ci.nsIUUIDGenerator ); let uuid = uuidGenerator.generateUUID().toString(); let url = `early_hint_asset.sjs?as=${asset}&uuid=${uuid}`; // write to raw socket response.seizePower(); if (hinted) { response.write("HTTP/1.1 103 Early Hint\r\n"); response.write(`Link: <${url}>; rel=preload; as=${asset}\r\n`); response.write("\r\n"); } let body = ""; if (asset === "image") { body = ` `; } else if (asset === "style") { body = `

Test preload css

`; } else if (asset === "script") { body = `

Test preload javascript

`; } else if (asset === "fetch") { body = `

Test preload fetch

Fetching...

`; } else if (asset === "font") { body = `

Test preload font

`; } // main document response response.write("HTTP/1.1 200 OK\r\n"); response.write("Content-Type: text/html;charset=utf-8\r\n"); response.write("Cache-Control: no-cache\r\n"); response.write(`Content-Length: ${body.length}\r\n`); response.write("\r\n"); response.write(body); response.finish(); }