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