Device Intelligence for Cloudflare

// Cloudflare Worker — production proxy
export default {
  async fetch(request: Request, env: Env): Promise<Response> {
    const url = new URL(request.url)
    if (!url.pathname.startsWith('/tracio/')) {
      return fetch(request)
    }
    // Strip the /fp prefix and proxy to your tracio.ai server
    const targetPath = url.pathname.replace(/^\/tracio/, '')
    const target = `https://${env.TRACIO_ORIGIN}${targetPath}${url.search}`
    const headers = new Headers(request.headers)
    headers.set('X-Forwarded-For', request.headers.get('CF-Connecting-IP') || '')
    headers.set('X-Real-IP', request.headers.get('CF-Connecting-IP') || '')
    const response = await fetch(target, {
      method: request.method,
      headers,
      body: request.method !== 'GET' ? request.body : undefined,
    })
    // Cache static agent script for 1 hour
    const res = new Response(response.body, response)
    if (targetPath.includes('/agent')) {
      res.headers.set('Cache-Control', 'public, max-age=3600')
    }
    return res
  },
}