Spaces:
Paused
title: Pi Web Preview
emoji: 🪟
colorFrom: gray
colorTo: gray
sdk: docker
app_port: 7860
pinned: false
short_description: Direct previews of dev servers for Pi Web
Pi Web previews
The origin that Pi Web frames to show a user's own dev server (for example a Vite app on their machine's port 5173) natively, on a different site from Pi Web so app code can never act with the user's Pi Web session.
There is nothing to open here directly: Pi Web asks its gateway for a capability link
(/__pv/<cap>/), this Space keeps it in a partitioned, HttpOnly cookie and relays every request
to the gateway, which checks the capability and forwards to that user's machine only.
Plain HTTP and server-sent events stream both ways; WebSocket upgrades (hot module reload
sockets) are not supported. Only Pi Web may frame these pages (frame-ancestors).
Configuration: secret PREVIEW_RELAY_SECRET (shared with the gateway Space), optional variables
PREVIEW_GATEWAY (default https://mike0021-pi-web.hf.space) and PREVIEW_FRAME_ANCESTORS.