UnityWebRequests on iOS sometimes get stuck indefinitely even with timeout set

No building as a Development build does not make the issue go away.

 

Just stumbled across this thread, because we seem to have the same problem with randomly freezing iOS Build most likely because of UWR. We saw this issue because we switched from http to https web adress. And we are Using 2019.4.18.

So is everyone now upgrading to 2019.4.21 or still using the "webOperationQueue.qualityOfService = NSQualityOfServiceUserInteractive"-Hack?

Thanks a lot


Oh yeah, just FYI: no ARFoundation in our project though ,...

 

We upgraded and the problem never occured again on our side

 

Oh okay nice!

Is there any resource where I can find in which Unity-Version this problem disappears?

 

you saved my live, bro.

 

https://unity3d.com/unity/whats-new/2019.4.21

• iOS: Fixed UnityWebRequest sometimes getting stuck on iOS 14.2+ when using ARFoundation. (1299873)

 

Looks like this has returned in 2020.3.13f1

 

I have same problem with UnityWebRequest in iOS device in 2021.2.3f1 M1 Silicon. Xcode shows: "Error while Receiving: HTTP/1.1 422 Unprocessable Entity". I'm using ARFoundation and iOS 14.4.2. How can I fix it?

 

My code is:

Code (CSharp):

1. UnityWebRequest www1 = UnityWebRequestTexture.GetTexture(url);
2.             yield return www1.SendWebRequest();
3.  
4.             while (!www1.isDone)
5.             {
6.                 Debug.LogError("cargando mapa...");
7.  
8.                 yield return null;
9.             }
10.  
11.             if (www1.isNetworkError || www1.isHttpError)
12.             {
13.                 Debug.Log("Error while Receiving: " + www1.error);
14.                 Instantiate(Resources.Load("_Canvas_MENSAJECONEXION"), transform.position, transform.rotation);
15.              }
16.             else
17.             {
18.                 yield return new WaitForSeconds(0.5f);
19.                 maprender.material.mainTexture = ((DownloadHandlerTexture)www1.downloadHandler).texture;
20.             }

In Unity editor the textures are loaded fine with no errors in the console but in iOS device don't appear the textures. When I debug with Xcode it shows Error while Receiving: HTTP/1.1 422 Unprocessable Entity when textures aren't showed, but the game plays ok. Only textures aren't loaded.

In my old Intel MacBook and Unity 2019.4.25f1 works fine and iOS device shows the textures.

 

It's an error that appears when runs the app in iOS device that is build in a MacBook Pro M1 with Unity 2021.2.3f1

 

Yes, It happens when build from M1 in iOS device. When build from older x86 Mac in iOS device the app run correctly