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(url: string, maxRetries: number = 5, retryDelay: number = 500): Promise<EventSource> {
7    return new Promise((resolve, reject) => {
8        let attempt = 0;
9        const tryConnect = () => {
10            if (document.cookie.includes('session=')) {
11                console.debug('Session cookie found, initializing SSE connection');
12                const eventSource = new EventSource(url);
13                resolve(eventSource);
14            } else {
15                attempt++;
16                console.debug(`Session cookie not found. Attempt ${attempt} of ${maxRetries}, retrying in ${retryDelay}ms...`);
17                if (attempt >= maxRetries) {
18                    reject(new Error('Session cookie not found after maximum retries'));
19                } else {
20                    setTimeout(tryConnect, retryDelay);
21                }
22            }
23        };
24        tryConnect();
25    });
26}