Function headRequest

src/spec-utils/httpRequest.ts:53–80

(options: { url: string; headers: Record<string, string> }, output: Log)

// HTTP HEAD request that returns status code.
export async function headRequest(options: { url: string; headers: Record<string, string> }, output: Log) {
	const secureContext = await secureContextWithExtraCerts(output);
	return new Promise<number>((resolve, reject) => {
		const parsed = new url.URL(options.url);
		const reqOptions: RequestOptions & tls.CommonConnectionOptions = {
			hostname: parsed.hostname,
			port: parsed.port,
			path: parsed.pathname + parsed.search,
			method: 'HEAD',
			headers: options.headers,
			agent: new ProxyAgent(),
			secureContext,
		};

		const plainHTTP = parsed.protocol === 'http:' || parsed.hostname === 'localhost';
		if (plainHTTP) {
			output.write('Sending as plain HTTP request', LogLevel.Warning);
		}

		const req = (plainHTTP ? http : https).request(reqOptions, res => {
			res.on('error', reject);
			output.write(`HEAD ${options.url} -> ${res.statusCode}`, LogLevel.Trace);
			resolve(res.statusCode!);
		});
		req.on('error', reject);
		req.end();
	});
}

// Send HTTP Request.
// Does not throw on status code, but rather always returns 'statusCode', 'resHeaders', and 'resBody'.