I have an iOS Swift project using the AWSMobileClient SDK (v2.9.9) installed with Cocoapods.
There is one problematic method that is used quite frequently in the app:
AWSMobileClient.sharedInstance().getAWSCredentials { (credentials, error) in ... }
and there is a specific fatal error that occurs:
Obtaining an identity id in another thread failed or didn't complete
within 5 seconds.
On some devices, it works fine 90% of the time and only usually occurs after a sequence of steps - e.g. sign in, log out, sign in again (the method is called after sign in).
However, recently on a new device that I've been testing on it has appeared every single time.
There was another Stack question here that suggested that another AWS SDK operation may be running in parallel when getAWSCredentials is called - but after reviewing my code I'm fairly sure this isn't the case.
I've also tried running this method on the failing device to see if it would give any clues:
AWSMobileClient.sharedInstance().getIdentityId().continueWith { task -> Any? in ... }
and returns with this error:
Fetching identity id on another thread failed. Please retry by calling
getIdentityId() method.
I've spent hours looking through my own code and the stack traces that led to the error and am at a dead end with thoughts on how to solve or even debug this further.
Hopefully someone will be able to suggest something to help me - thanks! :)
Related
I have already looked at these 2 threads and did not find anything useful:
Error 0 on DeviceCheck API
iOS DeviceCheck API - GenerateToken gives error Code 0
I get com.apple.devicecheck.error error 0 error when calling try await DCAppAttestService.shared.attestKey(_:clientDataHash:).
I have ensured that the device time is correct. This error does not show up when I install the app locally from Xcode. But I get this error when I side-load a binary generated from CI/CD pipeline and signed with a different account.
Based on Apple's documentation DCError.Code.unknownSystemFailure corresponds to 0 id.
A failure has occurred, such as the failure to generate a token.
This error is not super helpful as I am able to call try await DCAppAttestService.shared.generateKey() without throwing an error.
When sending a GET request in Safari, Safari is failing to send a valid request to the server. In fact, it isn't even reaching the server (I've checked this on the back end). Its also failing to provide all but two of the request headers and the response is null (which results in safari logging a kcferrordomaincfnetwork error 303 in the console). I've attached some screenshots below along with some additional findings. Can anyone provide any insight?
Screenshot of the request when it fails
Screenshot of the request when it passes
Issue is only reproducible in Safari on iOS devices.
Issue was happening on the MacBook previously. After clearing the website data once, we never saw the issue again
The call is intermittently failing
When setting a breakpoint before the product details call and manually calling it in the console, it fails the first time and then passes the second time.
Sometimes it isn’t the product details call that is failing (although it usually is)
Sometimes it is the create app or get product image call that fails.
Issue seems to go away after clearing website data, but comes back after one successful session.
When the call fails, we are getting the following error in the console: kcferrordomaincfnetwork error 303
Session storage is empty and issue persists
No exceptions are occurring (I enabled "break on all exceptions" in Safari)
Try running ng serve with the --no-live-reload option. We were seeing similar behavior, and WDS may have been interrupting the HTTP calls. So far, this has solved our problem.
We use Twilio SDK in our iOS app. It works fine but sometimes didStopListeningForIncomingConnections callback is called with error=31000 ("General error"). After that, the device turns to a strange state: it seems to be online but it's impossible to call it. And it shows "unconnected" state on the device.
So the questions are:
1. What does this 31000 error means?
2. What should we do in such a case? How to reconnect device to Twilio?
Megan from Twilio here.
You can see what an error for Twilio Client means here: https://www.twilio.com/docs/api/client/errors
However, 31000 is a rather vague and less than ideal error message as you describe. In this case, it is likely that the Twilio capability token has probably expired while the application is in the background, and if you merely call the listen method whenever they are receiving the 31000 generic error, it might cause the client SDK to result in a error-retry loop and crash the application eventually.
At the time of your writing with TwilioClient iOS SDK v1.2.5, it is suggested to use the following sample code in your did-stop-listening callback:
- (void)device:(TCDevice*)device didStopListeningForIncomingConnections:(NSError*)error {
if ( [self checkCapabilityTokenStillValid] ) {
// if the token has not yet expired, use the `listen` method of `TCDevice` to resume the listening state
[self.device listen];
}
else {
// restart all over by requesting a new capability token and initialize/update the `TCDevice` instance again
[self login];
}
}
The TwilioClient iOS SDK takes care of dispatching the listen and updateCapabilitiyToken: methods to the current thread for execution, therefore it's safe to call them directly in the didStopListeningForIncomingConnections. The did-stop-listening delegate method is always triggered with dispatch_get_main_queue() of Grand Central Dispatch.
Hope this may help others if they run into the same generic error.
This may or may not be the issue, we have encountered 31000 errors two times in our development and both were a result of generating the JWT on our server api. To be clear the error was a 31000 on the client, but the reason for this was in the construction of the JWT, and the params we wanted twilio to send back to our application.
When passing in an object to allow_client_outgoing or allow_client_incoming the twilio sdk concats this all in their scope attribute in their JWT. It added it to the scope:client:outgoing?appSid= which looks like a query string. That means it has a size limit of 2048. So exceeding this length generates a 31000 error.
In addition adding the objects doesn't seem to always implicitly serialize the object correctly, it introduces characters that can generate errors in their corresponding mobile sdks (but not their web sdk ... weird) so we took care of this by explicitly serializing objects to JSON before they are inserted into the JWT.
I hope both of these examples help you track down the issue.
The main idea is to catch the crash log (or the reason of the error) and send it to a server.
I know that iTunes does log the crashes from the users' devices but I need to find if there's a way to get it and store it on our server.
I was trying "PlCrashReporter" and i finished implementing it (as they did on this link https://www.plcrashreporter.org/documentation/api/v1.0/example_usage_iphone.html).
Problem
The function applicationDidFinishLaunching is not called when the crash occurs.
Am I on the right track?
Is there a specific function which is called upon a crash in AppDelegate ?
Thanks in advance
EDIT
I've also tried the solution of the following question:
iOS crash log catch, debug info.. Catch and send via email to the Dev team
It actually works but there are some errors that are cause by Swift and not Objective-C (Like Error while unwrapping optional value) were not caught..
Any suggestions?
You should use Crashlytics. You then can use a custom web hook to receive the crash reports.
On start app i called AudioSessionInitialize and check result value.
If it was kAudioSessionInitializationError then i informed user that application can not work properly cause audio does not work.
But since iOS 7 this function was deprecated.
It was similar question before: A fix for AudioSessionInitialize Deprecated? but... it has no any mention about how to get initialization error status.
And of course, i know how to initialize audio session without this function: Just calling [AVAudioSession sharedInstance] cause hidden call of AudioSessionInitialize. But it returns non zero value anyway. So new interface does not allow to get initialization error status.
upd: I'm not sure it's important but i receive message to stdout (which i redirected to log file) while call with error happens:
ERROR: [7971] 146: Unable to talk to server: error 0x10000003
(268435459)
explaination why i need this:
It happens very rarely (less then 0,1% of case) but it happens for any firmware. Last case registered for iOS 7.0.3 - so it's actual return value still (btw, first case registered for first firmware my app supported: iOS 2.2). It's important feature (cause i develop alarm clock) - it allows to know user about issues in the evening and not in the morning (cause in the morning this issue will cause oversleep).