enhancement from issue 938

itinance#938

Author: Aliveing

Downloader.m

@@ -128,6 +128,14 @@ - (void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTas
     NSLog(@"RNFS download: unable to move tempfile to destination. %@, %@", error, error.userInfo);
   }
 
+  // When numerous downloads are called the sessions are not always invalidated and cleared by iOS14. 
+  // This leads to error 28 – no space left on device so we manually flush and invalidate to free up space
+  if(session != nil){
+    [session flushWithCompletitonHandler:^{
+      [session finishTasksAndInvalidate];
+    }];
+  }
+
   return _params.completeCallback(_statusCode, _bytesWritten);
 }
 

Uploader.m

@@ -106,6 +106,13 @@ - (void)uploadFiles:(RNFSUploadParams*)params
   NSURLSession *session = [NSURLSession sessionWithConfiguration:sessionConfiguration delegate:(id)self delegateQueue:[NSOperationQueue mainQueue]];
   _task = [session dataTaskWithRequest:req completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
       NSString * str = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
+      // When numerous downloads are called the sessions are not always invalidated and cleared by iOS14. 
+      // This leads to error 28 – no space left on device so we manually flush and invalidate to free up space
+      if(session != nil){
+        [session flushWithCompletitonHandler:^{
+          [session finishTasksAndInvalidate];
+        }];
+      }
       return self->_params.completeCallback(str, response);
   }];
   [_task resume];