firebase-ios-sdk: Path .info/connected returns NO with good connection

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  • If this is a feature request please use the Feature Request template.
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• For backend issues, console issues, and other non-SDK help that does not fall under one of the above categories, reach out to Firebase Support.
• Once you’ve read this section and determined that your issue is appropriate for this repository, please delete this section.

[REQUIRED] Step 1: Describe your environment

• Xcode version: 11.3
• Firebase SDK version: 6.16.0
• Firebase Component: Database
• Component version: 6.1.4
• Installation method: CocoaPods (select one)

[REQUIRED] Step 2: Describe the problem

Steps to reproduce:

What happened? How can we make the problem occur? We use the .info/connected to make sure Firebase is online but it quite often returns NO even when the phone internet connection is working fine and without any issues. Not sure if its a bug, a mistake in our implementation or if thats normal to happen.

If you have a downloadable sample project that reproduces the bug you’re reporting, you will likely receive a faster response on your issue.

Relevant Code:

Database.database().reference(withPath: ".info/connected").observe(.value)
        {[weak self] (snapshot) in
            
            if let unwrappedIsConnected = snapshot.value as? Bool {
                
                if(unwrappedIsConnected){
                    
                    SwiftMessages.hide(id: "messageCantReachServer")
                    
                    if let unwrappedTask = self?.task {
                        
                        unwrappedTask.cancel()
                    }
                } else {
            
                    self?.task = DispatchWorkItem { self?.showMessageCantReachServer() }
                    
                    if let unwrappedTask = self?.task {
                        
                        DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + 3, execute: unwrappedTask)
                    }
                }
            }
        }