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jubnl
3ee4da9775
Behind Cloudflare Zero Trust or Pangolin, cross-origin auth redirects on /api/* calls surface as CORS errors (error.response === undefined) that the existing 401 interceptor never catches, leaving the PWA stuck with network-error toasts instead of re-authenticating. New connectivity module probes /api/health every 30s using fetch with cache:no-store and inspects Content-Type to reliably detect whether the server is reachable vs intercepted by an upstream proxy. axios interceptor changes: - On !error.response + navigator.onLine: run probeNow(); if the health probe also fails (proxy is intercepting all requests), trigger a guarded window.location.reload() so the edge proxy can intercept the top-level navigation and run its auth flow (covers CF Access and Pangolin 302 mode) - On error.response status 401 with text/html body: same reload path, covering Pangolin header-auth extended compatibility mode which returns 401+HTML instead of a 302 redirect. TREK own 401s are always JSON so there is no collision with the existing AUTH_REQUIRED branch. - sessionStorage flag prevents reload loops; cleared on any successful response so the guard resets after re-auth. /api/health excluded from SW NetworkFirst cache (vite.config.js regex) and Cache-Control: no-store added server-side so probes always hit the network and cannot be served stale from the 24h api-data cache. LoginPage caches last-known appConfig in localStorage so the SSO button renders in OIDC+UN/PW dual mode even when the config fetch is intercepted by the proxy. Auto-redirect to IdP skipped when config comes from cache to avoid redirect loops while the proxy is challenging. Fixes discussion #836.