sseClient.ts RawHistoryFolder

1/**
2 * Utility to initialize an SSE connection after ensuring the session cookie is present.
3 * This helps avoid unauthenticated SSE requests that trigger rate limiting on the server.
4 */
5
6export function initSSE(
7	url: string,
8	maxRetries: number = 5,
9	retryDelay: number = 500
10): Promise<EventSource> {
11	return new Promise((resolve, reject) => {
12		let attempt = 0;
13		const tryConnect = () => {
14			if (document.cookie.includes('session=')) {
15				console.debug('Session cookie found, initializing SSE connection');
16				const eventSource = new EventSource(url);
17				resolve(eventSource);
18			} else {
19				attempt++;
20				console.debug(
21					`Session cookie not found. Attempt ${attempt} of ${maxRetries}, retrying in ${retryDelay}ms...`
22				);
23				if (attempt >= maxRetries) {
24					reject(new Error('Session cookie not found after maximum retries'));
25				} else {
26					setTimeout(tryConnect, retryDelay);
27				}
28			}
29		};
30		tryConnect();
31	});
32}