[networkimprov]

Maybe Flutter works as a client to a native localhost app? (Analogous to the browser for a localhost web app like Jupyter Notebook[1].)

Does it have a Websocket client?

[1] https://jupyter.org

[kllrnohj]

There's no reason to bother with websocket stuff, you can just call out to native code via platform channels ( https://flutter.dev/docs/development/platform-integration/pl... )

Just that once you do that you're no longer a portable cross-platform app, and there's limits to what you can do with that pipe in terms of data marshaling and the overhead from that.

[networkimprov]

Unless you're porting an existing localhost web app which is accessed via Websockets.

[Hixie]

https://master-api.flutter.dev/flutter/dart-io/WebSocket-cla...