fix(examples): allow trycloudflare.com in Vite allowedHosts#8750
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Vite 6 rejects tunnel Host headers with 403; allow *.trycloudflare.com for dev and preview so examples work over HTTPS tunnels (e.g. AVP testing).
mvaligursky
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May 20, 2026
Adds optional HTTPS dev server for testing the examples browser on phones, tablets, and XR headsets over LAN. The default `npm run develop` flow is unchanged. - New `develop:https` script — HTTPS variant of `develop`, reads certs from `examples/.cert/`. Fails fast if certs are missing. - New `cert` script — generates local dev certs via mkcert for localhost, 127.0.0.1, ::1, and the machine's .local hostname. Extra SANs accepted as positional args: `npm run cert -- 10.0.0.42`. - Vite `allowedHosts` switched from `.trycloudflare.com` (corp-blocked, #8750) to `['localhost', '.local']` for LAN device testing under Vite 6's host check. - `examples/.cert/` added to .gitignore. - README gains an "HTTPS dev for mobile / XR device testing" section with mkcert setup, per-device trust steps, dynamic LAN IPs, and troubleshooting. Verified on Mac, Android, and Apple Vision Pro. Quest 3 path is documented but not verified (requires Meta Developer Mode). Co-authored-by: Martin Valigursky <mvaligursky@snapchat.com>
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Allow the examples Vite dev and preview servers to accept requests when accessed through a Cloudflare quick tunnel (
*.trycloudflare.com).Changes:
server.allowedHostsandpreview.allowedHoststo['.trycloudflare.com']inexamples/vite.config.mjsWithout this, Vite 6 returns 403 on assets such as
/@vite/clientwhen the browser sends the tunnel hostname in theHostheader (common for HTTPS headset / AVP testing viacloudflared).Test plan
npm run devinexamples/, tunnel withcloudflared tunnel --url http://localhost:5555, open tunnel URL — examples shell loads without 403 on Vite assetsnpm run build && npm run serve, same tunnel — preview works on tunnel URLhttp://localhost:5555still works unchanged