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- import * as http from 'http';
- import * as https from 'https';
- import { once } from 'events';
- import { JOSEError, JWKSTimeout } from '../util/errors.js';
- import { concat, decoder } from '../lib/buffer_utils.js';
- const fetchJwks = async (url, timeout, options) => {
- let get;
- switch (url.protocol) {
- case 'https:':
- get = https.get;
- break;
- case 'http:':
- get = http.get;
- break;
- default:
- throw new TypeError('Unsupported URL protocol.');
- }
- const { agent, headers } = options;
- const req = get(url.href, {
- agent,
- timeout,
- headers,
- });
- const [response] = (await Promise.race([once(req, 'response'), once(req, 'timeout')]));
- if (!response) {
- req.destroy();
- throw new JWKSTimeout();
- }
- if (response.statusCode !== 200) {
- throw new JOSEError('Expected 200 OK from the JSON Web Key Set HTTP response');
- }
- const parts = [];
- for await (const part of response) {
- parts.push(part);
- }
- try {
- return JSON.parse(decoder.decode(concat(...parts)));
- }
- catch {
- throw new JOSEError('Failed to parse the JSON Web Key Set HTTP response as JSON');
- }
- };
- export default fetchJwks;
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