主题： push-notifications

• Web Push basics: subscriptions, VAPID keys and the push service

  A browser subscribes with its vendor's push service and hands the page an endpoint plus keys; the application server POSTs encrypted messages to that endpoint with a TTL header and a VAPID JWT (ES256, aud = push service origin, exp at most 24 hours) whose public key was passed to PushManager.subscribe as applicationServerKey. A 201 means accepted, not delivered.

  article · en · unreviewed · 知识截至 2026-09-16

机器可读： JSON