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Monday, January 6, 2025

ios – WCSession not reachable for some customers


I’m growing an app the place the iOS app (written in Flutter) communicates with a watchOS companion app. Whereas the principle app is constructed with Flutter, the communication between iOS and watchOS is applied natively utilizing WCSession, so the Flutter framework shouldn’t play a job on this challenge. I structured the communication based mostly on this text https://medium.com/@Toglefritz/building-a-watchos-companion-app-for-flutter-08f80ea8cb1b

The workflow is easy: the iOS app sends a message to the watch, and the watch begins performing duties based mostly on that message. For almost all of customers, this works as anticipated. Nonetheless, a small variety of customers are reporting points the place the message isn’t transmitted to the watch, seemingly as a result of the WCSession will not be reachable.

Listed below are some key particulars:

Setup:

  • The iOS app ensures WCSession is activated, and messages are despatched utilizing sendMessage(_:replyHandler:errorHandler:).
  • On the watchOS facet, the app listens for incoming messages and processes them accordingly.

Drawback:

  • For many customers, the communication works with none points.
  • For a subset of customers, the watch app doesn’t obtain the message, and the error handler on the iOS facet signifies that the session isn’t reachable.
  • The difficulty is inconsistent and troublesome to breed in testing. I’ve been unable to copy the issue on my gadgets.

Questions:

  • Have you ever encountered related points with WCSession communication being unreliable or inconsistent?
  • Are there any recognized edge circumstances or situations that would trigger the session to be unreachable for some customers?
  • Do you have got any debugging ideas or methods for figuring out the basis explanation for such points?

For the reason that downside solely happens for a small subset of customers and isn’t reproducible on my finish, I’m at a loss for how you can enhance or debug this additional. Any assist or solutions can be tremendously appreciated!

Thanks prematurely!

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