main repo

node_modules/jose/dist/node/esm/runtime/fetch_jwks.js

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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;