Feature request: Export/Import custom hosts and configs.

[MagicalDrizzle]

The website now persist configs, so I think it would be easier/better to add the ability to import/export custom hostnames/DNS servers/configurations. I think a JSON-type export would be best.

DoHSpeedTest/script.js

Lines 21 to 66 in 576c0ba

	// ─── Configuration ───────────────────────────────────────────────────────────
	const DEFAULT_TOP_WEBSITES = Object.freeze([
	'google.com', 'youtube.com', 'facebook.com', 'instagram.com', 'chatgpt.com',
	'x.com', 'whatsapp.com', 'reddit.com', 'wikipedia.org', 'amazon.com',
	'tiktok.com', 'pinterest.com'
	]);
	const TIMEOUT_PENALTY_MS = 5000;
	const DNS_MESSAGE_HEADERS = { 'Accept': 'application/dns-message' };
	const DNS_JSON_HEADERS = { 'Accept': 'application/dns-json' };
	const SETTINGS_STORAGE_KEYS = {
	hostnames: 'dns-speed-test-hostnames-v1',
	dohServers: 'dns-speed-test-doh-servers-v1'
	};
	const DEFAULT_DNS_SERVERS = Object.freeze([
	{ name: "AdGuard", countryCode: "CY", country: "Cyprus", url: "https://dns.adguard-dns.com/dns-query", ips: ["94.140.14.14", "94.140.15.15"] },
	{ name: "AliDNS", countryCode: "CN", country: "China", url: "https://dns.alidns.com/dns-query", ips: ["223.5.5.5", "223.6.6.6"] },
	{ name: "OpenDNS", countryCode: "US", country: "United States", url: "https://doh.opendns.com/dns-query", ips: ["208.67.222.222", "208.67.220.220"] },
	{ name: "CleanBrowsing", countryCode: "US", country: "United States", url: "https://doh.cleanbrowsing.org/doh/family-filter/", ips: ["185.228.168.9", "185.228.169.9"] },
	{ name: "Cloudflare", countryCode: "US", country: "United States", url: "https://cloudflare-dns.com/dns-query", type: "get", allowCors: true, ips: ["1.1.1.1", "1.0.0.1"] },
	{ name: "ControlD", countryCode: "CA", country: "Canada", url: "https://freedns.controld.com/p0", ips: ["76.76.2.0", "76.223.122.150"] },
	{ name: "DNS.SB", countryCode: "DE", country: "Germany", url: "https://doh.dns.sb/dns-query", type: "get", allowCors: true, ips: ["185.222.222.222", "45.11.45.11"] },
	{ name: "DNSPod", countryCode: "CN", country: "China", url: "https://dns.pub/dns-query", type: "post", allowCors: false, ips: ["119.29.29.29", "182.254.116.116"] },
	{ name: "Google", countryCode: "US", country: "United States", url: "https://dns.google/resolve", type: "get", allowCors: true, ips: ["8.8.8.8", "8.8.4.4"] },
	{ name: "Mullvad", countryCode: "SE", country: "Sweden", url: "https://dns.mullvad.net/dns-query", ips: ["194.242.2.2", "194.242.2.2"], type: "get", allowCors: false },
	{ name: "Mullvad Base", countryCode: "SE", country: "Sweden", url: "https://base.dns.mullvad.net/dns-query", ips: ["194.242.2.4", "194.242.2.4"], type: "get", allowCors: false },
	{ name: "NextDNS", countryCode: "US", country: "United States", url: "https://dns.nextdns.io", type: "get", ips: ["45.90.28.0", "45.90.30.0"] },
	{ name: "OpenBLD", countryCode: "KZ", country: "Kazakhstan", url: "https://ada.openbld.net/dns-query", ips: ["146.112.41.2", "146.112.41.102"], allowCors: false },
	{ name: "DNS4EU", countryCode: "CZ", country: "Czechia", url: "https://unfiltered.joindns4.eu/dns-query", ips: ["86.54.11.100", "86.54.11.200"], type: "post", allowCors: false },
	{ name: "Quad9", countryCode: "CH", country: "Switzerland", url: "https://dns.quad9.net/dns-query", ips: ["9.9.9.9", "149.112.112.112"] },
	{ name: "360", countryCode: "CN", country: "China", url: "https://doh.360.cn/dns-query", ips: ["101.226.4.6", "180.163.224.54"] },
	{ name: "Canadian Shield", countryCode: "CA", country: "Canada", url: "https://private.canadianshield.cira.ca/dns-query", ips: ["149.112.121.10", "149.112.122.10"] },
	{ name: "Digitale Gesellschaft", countryCode: "CH", country: "Switzerland", url: "https://dns.digitale-gesellschaft.ch/dns-query", ips: ["185.95.218.42", "185.95.218.43"] },
	{ name: "DNS for Family", countryCode: "DE", country: "Germany", url: "https://dns-doh.dnsforfamily.com/dns-query", ips: ["94.130.180.225", "78.47.64.161"] },
	{ name: "Restena", countryCode: "LU", country: "Luxembourg", url: "https://dnspub.restena.lu/dns-query", ips: ["158.64.1.29"] },
	{ name: "IIJ", countryCode: "JP", country: "Japan", url: "https://public.dns.iij.jp/dns-query", ips: ["203.180.164.45", "203.180.166.45"] },
	{ name: "LibreDNS", countryCode: "GR", country: "Greece", url: "https://doh.libredns.gr/dns-query", ips: ["116.202.176.26", "147.135.76.183"] },
	{ name: "Switch", countryCode: "CH", country: "Switzerland", url: "https://dns.switch.ch/dns-query", ips: ["130.59.31.248", "130.59.31.251"] },
	{ name: "Foundation for Applied Privacy", countryCode: "AT", country: "Austria", url: "https://doh.applied-privacy.net/query", ips: ["146.255.56.98"] },
	{ name: "UncensoredDNS", countryCode: "DK", country: "Denmark", url: "https://anycast.uncensoreddns.org/dns-query", ips: ["91.239.100.100", "89.233.43.71"] },
	{ name: "RethinkDNS", countryCode: "US", country: "United States", url: "https://sky.rethinkdns.com/dns-query", ips: ["104.21.83.62", "172.67.214.246"], allowCors: false },
	{ name: "FlashStart (registration required)", countryCode: "IT", country: "Italy", url: "https://doh.flashstart.com/f17c9ee5", type: "post", allowCors: false, ips: ["185.236.104.104"] },
	{ name: "Comcast Xfinity", countryCode: "US", country: "United States", url: "https://doh.xfinity.com/dns-query", type: "get", allowCors: false, ips: ["75.75.75.75", "75.75.76.76"] }
	]);