1 files changed, 32 insertions, 0 deletions
diff --git a/MediaBrowser.Controller/IO/StreamHelper.cs b/MediaBrowser.Controller/IO/StreamHelper.cs
new file mode 100644
index 000000000..af97a0233
--- /dev/null
+++ b/MediaBrowser.Controller/IO/StreamHelper.cs
@@ -0,0 +1,32 @@
+using System.IO;
+using System.Threading;
+using System;
+
+namespace MediaBrowser.Controller.IO
+{
+    public static class StreamHelper
+    {
+        public static void CopyTo(Stream source, Stream destination, int bufferSize, CancellationToken cancellationToken)
+        {
+            CopyTo(source, destination, bufferSize, null, cancellationToken);
+        }
+
+        public static void CopyTo(Stream source, Stream destination, int bufferSize, Action onStarted, CancellationToken cancellationToken)
+        {
+            byte[] buffer = new byte[bufferSize];
+            int read;
+            while ((read = source.Read(buffer, 0, buffer.Length)) != 0)
+            {
+                cancellationToken.ThrowIfCancellationRequested();
+
+                destination.Write(buffer, 0, read);
+
+                if (onStarted != null)
+                {
+                    onStarted();
+                    onStarted = null;
+                }
+            }
+        }
+    }
+}