Local file webview and CORS

Vega Open Beta Q&A
3

Hi @zemlanin,

Welcome to Amazon Developer Community!!

Thank you for your question about CORS and local file loading in WebView.

This is a known limitation with file:// protocol in WebView - the browser treats the origin as null, which causes CORS blocking.

Could you try out these workarounds and let us know if they work?

  1. Message Bridge approach - Make HTTP requests from your React Native layer and pass data to the WebView using the message bridge pattern

  2. Local HTTP server - Serve your HTML through http://localhost instead of file://

  3. Bundle resources locally - For fonts and static assets, include them in /pkg/assets/ with relative paths

Our team is looking into this limitation and will provide an update as soon as we have more information.

Getting Started:

Thanks for helping us improve the Vega platform.

Warm regards,
Aishwarya