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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
/* global require, module */
const { logTest } = require("./utils/profiling");
// The replayed timelines run for up to 30s after the document request.
const DURATION_MS = 32000;
module.exports = logTest(
"doh busy site pageload",
async function (context, commands) {
const serverUrl = context.options.browsertime.server_url;
const site = context.options.browsertime.site;
if (!serverUrl || !site) {
throw new Error(
"doh_busy_site: needs --browsertime.server_url (from " +
"support_class=doh_busy_site.py) and --browsertime.site"
);
}
await commands.navigate("about:blank");
// Idle to allow for the TRR confirmation, like the other DoH tests.
await commands.wait.byTime(2000);
await commands.measure.start();
await commands.navigate(`${serverUrl}/?site=${site}`);
await commands.wait.byTime(DURATION_MS);
await commands.measure.stop();
const data = await commands.js.run(`
const entries = performance.getEntriesByType("resource");
const dns = entries
.map(e => e.domainLookupEnd - e.domainLookupStart)
.sort((a, b) => a - b);
const pct = p =>
dns.length ? dns[Math.min(dns.length - 1, Math.floor(p * dns.length))] : 0;
const dnsTotal = dns.reduce((sum, t) => sum + t, 0);
// Same-origin stats from the test server; sync so executeScript can return it.
const xhr = new XMLHttpRequest();
xhr.open("GET", "/stats", false);
xhr.send();
return {
...JSON.parse(xhr.responseText),
resources: entries.length,
// Images that failed to load, e.g. after a fallback to native DNS.
resources_failed: window.busy.failed,
dns_phase_count: dns.filter(t => t > 0).length,
dns_total_ms: dnsTotal,
dns_mean_ms: dns.length ? dnsTotal / dns.length : 0,
dns_p99: pct(0.99),
dns_max: dns[dns.length - 1] || 0,
dns_over_100ms: dns.filter(t => t > 100).length,
};
`);
context.log.info(
`doh_busy_site ${site}: ${data.resources} resources ` +
`(${data.resources_failed} failed), ` +
`${data.dns_phase_count} DNS phases, mean=${data.dns_mean_ms} ` +
`p99=${data.dns_p99} max=${data.dns_max} ` +
`over100=${data.dns_over_100ms} ` +
`doh_reconnects=${data.doh_reconnects}`
);
await commands.measure.addObject({ custom_data: data });
return true;
}
);