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I'm surprised that everyone's looking confused here. Yes: since 2016 (React Native v0.32), at least on iOS, React Native apps in development mode try to open WebSocket connections to standalone React DevTools at startup and indeed flood your console with cryptic messages.

https://github.com/facebook/react-native/issues/10027

The issue has been locked and is still open.

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Thanks for explaining. This is the first time I’m hearing about this issue. I’ll pass it to the team so it can get fixed.

Thanks, Dan! The incessant console-flooding was actually one of the things that made me give up on React Native. Great to hear that this is being addressed.

>The incessant console-flooding was actually one of the things that made me give up on React Native.

Doesn't this particular issue include a workaround?

> But unfortunate it's not enough. Especially because other websocket created in RCTPackagerConnection (funcition socketForLocation) and as I can see it can't be disabled from AppDelegate :-(

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