Back to Task.Run for async CopyTo..

Author: Badgerati

src/Listener/Requests/PodeRequestHandler.cs

@@ -468,7 +468,7 @@ public async Task Write(FileStream stream, CancellationToken cancellationToken)
                 return;
             }
 
-            await stream.CopyToAsync(InputStream, cancellationToken).ConfigureAwait(false);
+            await PodeHelpers.CopyFileTo(stream, InputStream, cancellationToken).ConfigureAwait(false);
         }
 
         public async Task Write(MemoryStream stream, CancellationToken cancellationToken)

src/Listener/Responses/PodeHttpResponse.cs

@@ -154,7 +154,7 @@ public override async Task WriteFile(FileSystemInfo file)
 
             using (var fileStream = fileInfo.OpenRead())
             {
-                await fileStream.CopyToAsync(OutputStream, Context.Listener.CancellationToken).ConfigureAwait(false);
+                await PodeHelpers.CopyFileTo(fileStream, OutputStream, Context.Listener.CancellationToken).ConfigureAwait(false);
             }
         }
 

src/Listener/Utilities/PodeHelpers.cs

@@ -160,6 +160,15 @@ public static async Task WriteTo(MemoryStream stream, byte[] array, int startInd
             }
         }
 
+        public static async Task CopyFileTo(FileStream fileStream, Stream stream, CancellationToken cancellationToken)
+        {
+            // need to use Task.Run as CopyToAsync is missing netstandard2.0
+            await Task.Run(() =>
+            {
+                fileStream.CopyTo(stream);
+            }, cancellationToken).ConfigureAwait(false);
+        }
+
         public static byte[] Slice(byte[] array, int startIndex, int count = 0)
         {
             // Validate startIndex and adjust count if needed