На iOS загрузка UnityWebRequest останавливается, когда приложение переходит в фоновый режим - PullRequest
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На iOS загрузка UnityWebRequest останавливается, когда приложение переходит в фоновый режим

0 голосов
/ 09 марта 2020

Я использую UnityWebRequestAssetBundle.GetAssetBundle для загрузки пакетов ресурсов, расположенных на удаленном сервере. В то время как на Android все работает как положено, загрузка останавливается на iOS при сворачивании приложения (или когда устройство переходит в спящий режим).

Когда я снова выполняю приложение на переднем плане, XCode показывает следующие журналы: 

-> applicationWillResignActive()
-> applicationDidEnterBackground()
2020-03-08 08:37:51.571235+0100 app[3852:2943256] Can't end BackgroundTask: no background task exists with identifier 1 (0x1), or it may have already been ended. Break in UIApplicationEndBackgroundTaskError() to debug.
-> applicationWillEnterForeground()
2020-03-08 08:37:55.169337+0100 app[3852:2943564] [] nw_read_request_report [C4] Receive failed with error "Software caused connection abort"
2020-03-08 08:37:55.194339+0100 app[3852:2943564] Task <015CA857-5213-4905-8F1B-4A0E3DA330DE>.<5> HTTP load failed, 350/5095859 bytes (error code: -1005 [1:53])
2020-03-08 08:37:55.195303+0100 app[3852:2943564] Task <446A65DA-5ACF-493C-AE8F-B746364F4A9E>.<6> HTTP load failed, 693/0 bytes (error code: -1005 [1:53])
2020-03-08 08:37:55.197007+0100 app[3852:2943431] Task <015CA857-5213-4905-8F1B-4A0E3DA330DE>.<5> finished with error [-1005] Error Domain=NSURLErrorDomain Code=-1005 "The network connection was lost." UserInfo={_kCFStreamErrorCodeKey=53, NSUnderlyingError=0x2800ced00 {Error Domain=kCFErrorDomainCFNetwork Code=-1005 "(null)" UserInfo={NSErrorPeerAddressKey=<CFData 0x282ca0be0 [0x1e218bcf0]>{length = 16, capacity = 16, bytes = 0x10021f40c0a801300000000000000000}, _kCFStreamErrorCodeKey=53, _kCFStreamErrorDomainKey=1}}, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <015CA857-5213-4905-8F1B-4A0E3DA330DE>.<5>, _NSURLErrorRelatedURLSessionTaskErrorKey=(
"LocalDataTask <015CA857-5213-4905-8F1B-4A0E3DA330DE>.<5>"
), NSLocalizedDescription=The network connection was lost., NSErrorFailingURLStringKey=http://192.168.1.48:8000/Mobile/dlc1, NSErrorFailingURLKey=http://192.168.1.48:8000/Mobile/dlc1, _kCFStreamErrorDomainKey=1}

C# код: 

public static AssetBundleDownloadProgress DownloadBundle (string bundleName, bool forImmediateLoad, DownloadBundleFinishedDelegate finished, DownloadBundleErrorDelegate error)
 {
     UnityWebRequest wr;

     if (HashDictionaryRemote.ContainsKey(bundleName))
     {
         uint crc = CRCDictionaryRemote[bundleName];
         Hash128 hash = HashDictionaryRemote[bundleName];

         wr = UnityWebRequestAssetBundle.GetAssetBundle (SERVER_URL + bundleName, hash, crc);
     }
     else
     {
         wr = UnityWebRequestAssetBundle.GetAssetBundle (SERVER_URL + bundleName);
     }

     wr.disposeDownloadHandlerOnDispose = true;
     wr.SetRequestHeader ("Cache-Control", "no-cache, no-store, must-revalidate");
     wr.SetRequestHeader ("Pragma", "no-cache");
     wr.SetRequestHeader ("Expires", "0");

     AssetBundleDownloadProgress progress = new AssetBundleDownloadProgress(wr);

     Instance.StartCoroutine(DownloadBundleCoroutine (wr, forImmediateLoad, progress, bundleName, finished, error));

     return progress;
 }

 private static IEnumerator DownloadBundleCoroutine (UnityWebRequest wr, bool forImmediateLoad, AssetBundleDownloadProgress progress, string bundleName, DownloadBundleFinishedDelegate finished, DownloadBundleErrorDelegate error)
 {
     yield return wr.SendWebRequest();

     if (wr.isNetworkError) 
     {
         error (wr.error);
     } 
     else
     {
         AssetBundle bundle = ((DownloadHandlerAssetBundle)wr.downloadHandler).assetBundle;

         if (bundle == null) 
         {
             error.Invoke($"Error loading bundle {bundleName}, probably another bundle with same files is already loaded.");
         } 
         else
         {
             finished.Invoke(bundle, progress);

             if(!forImmediateLoad)
                 bundle.Unload(true);
         }
     }
 }

Я использую Unity 2019.2

Любая помощь будет принята с благодарностью!

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