Pages Functions Routing

Route List

• functions/api/img.ts

  • Route prefix: /api/img
  • Source: R2 bucket binding IMG_R2
  • Allowed methods: GET / HEAD
  • Purpose: Serve H Series images by same-origin path and cache at edge

• functions/proxy/download/[[path]].ts

  • Route prefix: /proxy/download/*
  • Upstream: https://mirror.novastar.wiki
  • Allowed methods: GET / HEAD / OPTIONS
  • Purpose: Provide same-origin forwarding for the /download page

Behavior

• /api/img only allows whitelisted keys: products/*, cards/*, documents/*.
• Sensitive request headers are filtered before forwarding (such as host, cookie, and authorization).
• set-cookie related response headers are removed.
• Upstream redirect Location headers are rewritten to the /proxy/download prefixed path.
• Adds X-Proxy-Upstream response header for troubleshooting.

Required Binding

In Cloudflare Pages project settings, configure R2 bucket binding:

• Variable name: IMG_R2
• Bind both environments: Production and Preview

If the binding is missing, /api/img returns 500.

Local Debug

bun run build
bunx wrangler pages dev

Default URL: http://localhost:8788