fix: HTTPS/WebSocket mixed-content — add PHP SSE relay for scale gateway
The browser (HTTPS) cannot connect to ws:// directly (mixed-content block).
Solution: PHP SSE relay bridges the gap server-side.
- api/scale_relay.php: GET ?url=ws://ip:port
PHP opens WS connection to Android gateway, streams JSON frames as
Server-Sent Events to the browser over existing HTTPS connection.
Includes WS handshake, masked client frames, frame decoder, keep-alive.
- api/scale_ping.php: GET ?url=ws://ip:port
One-shot connectivity test, returns {"ok":true} or {"ok":false,"error"}.
- app.js: WebSocket -> EventSource (SSE)
_scaleWs -> _scaleEs, connects to /api/scale_relay.php
testScaleConnection() -> fetch /api/scale_ping.php (no more direct ws://)
readScaleWeight(): removed get_weight send (scale streams continuously)
dadaloop82
099a6cc4e8