Function performDNSTests

script.js:590–622

()

}

async function performDNSTests() {
    const totalServers = dnsServers.length;
    const totalQueries = topWebsites.length;

    for (let i = 0; i < dnsServers.length; i++) {
        const server = dnsServers[i];

        // Update progress
        btnText.textContent = `Testing ${i + 1}/${totalServers}...`;
        progressCount.textContent = `${i + 1} of ${totalServers}`;
        progressFill.style.width = `${((i + 1) / totalServers) * 100}%`;

        const speedResults = await Promise.all(
            topWebsites.map(website => measureDNSSpeed(server.url, website, server.type, server.allowCors))
        );

        server.individualResults = topWebsites.map((website, idx) => ({
            website,
            speed: speedResults[idx] !== null ? speedResults[idx] : 'Unavailable'
        }));

        if (totalQueries === 0) {
            server.speed = { min: 'Unavailable', median: 'Unavailable', max: 'Unavailable', avg: 'Unavailable' };
            server.reliability = { status: 'no-data', successCount: 0, failureCount: 0, totalQueries: 0, message: 'No hostnames configured for testing.' };
        } else {
            const penalizedResults = speedResults.map(s => typeof s === 'number' ? s : TIMEOUT_PENALTY_MS);
            server.speed = calculateSpeedStats(penalizedResults);
            server.reliability = buildReliabilityProfile(speedResults, totalQueries);
        }

        updateResult(server);
    }
}

function calculateSpeedStats(results) {
    if (!results.length) {