[Website][Experiment] Share Playground #3170
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Enables sharing a Playground instance with others through an HTTP long-polling relay. The host browser processes WordPress requests and sends responses back through the relay to guest browsers. Key components: - Relay middleware for Vite dev server - TunnelHost class for host-side request processing - SharedPlaygroundViewer for guest-side rendering - Share modal UI with copy-to-clipboard functionality - URL rewriting for HTML, CSS, and redirect headers
The sharing feature now persists when the modal is closed, allowing users to share their Playground in the background. A status indicator in the toolbar shows when sharing is active. Clicking it reopens the share modal for management. Also adds a PHP implementation of the relay server for production deployments where Node.js isn't available. The JavaScript relay continues to be used for development.
The php-relay-middleware and relay-middleware files use Node.js modules (fs) and should not be exported from the client-facing barrel file. This was causing "fs.readFileSync" errors in the browser.
adamziel
added
[Type] Enhancement
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Motivation for the change, related issues
An experiment to make Playground share-able with others via a PHP relay. Client A creates a Playground and starts a sharing session by starting a long-polling loop to relay.php. Client B receives that link and loads an iframe from relay.php. All the PHP requests are relayed to Client A and served using their Playground.
Possible follow-ups:
Implementation details
Testing Instructions (or ideally a Blueprint)