From a660aa001eb31e91d040e066787fa764cf5f0fb4 Mon Sep 17 00:00:00 2001
From: Luke Pulverenti <luke.pulverenti@gmail.com>
Date: Sun, 12 Mar 2017 15:27:26 -0400
Subject: re-organize file streaming

---
 Emby.Common.Implementations/Net/NetAcceptSocket.cs | 43 +++++++++++++++++++++-
 1 file changed, 42 insertions(+), 1 deletion(-)

(limited to 'Emby.Common.Implementations/Net/NetAcceptSocket.cs')

diff --git a/Emby.Common.Implementations/Net/NetAcceptSocket.cs b/Emby.Common.Implementations/Net/NetAcceptSocket.cs
index 731ad1b74..e21ffe553 100644
--- a/Emby.Common.Implementations/Net/NetAcceptSocket.cs
+++ b/Emby.Common.Implementations/Net/NetAcceptSocket.cs
@@ -2,6 +2,7 @@
 using System.Net;
 using System.Net.Sockets;
 using System.Threading;
+using System.Threading.Tasks;
 using Emby.Common.Implementations.Networking;
 using MediaBrowser.Model.Net;
 using MediaBrowser.Model.Logging;
@@ -59,7 +60,7 @@ namespace Emby.Common.Implementations.Net
 #if NET46
             Socket.Close();
 #else
-                        Socket.Dispose();
+            Socket.Dispose();
 #endif
         }
 
@@ -96,6 +97,46 @@ namespace Emby.Common.Implementations.Net
             _acceptor.StartAccept();
         }
 
+#if NET46
+        public Task SendFile(string path, byte[] preBuffer, byte[] postBuffer, CancellationToken cancellationToken)
+        {
+            var options = TransmitFileOptions.Disconnect | TransmitFileOptions.ReuseSocket | TransmitFileOptions.UseKernelApc;
+
+            var completionSource = new TaskCompletionSource<bool>();
+
+            var result = Socket.BeginSendFile(path, preBuffer, postBuffer, options, new AsyncCallback(FileSendCallback), new Tuple<Socket, string, TaskCompletionSource<bool>>(Socket, path, completionSource));
+
+            return completionSource.Task;
+        }
+
+        private void FileSendCallback(IAsyncResult ar)
+        {
+            // Retrieve the socket from the state object.
+            Tuple<Socket, string, TaskCompletionSource<bool>> data = (Tuple<Socket, string, TaskCompletionSource<bool>>)ar.AsyncState;
+
+            var client = data.Item1;
+            var path = data.Item2;
+            var taskCompletion = data.Item3;
+        
+            // Complete sending the data to the remote device.
+        try {
+            client.EndSendFile(ar);
+        taskCompletion.TrySetResult(true);
+}
+        catch(SocketException ex){
+        _logger.Info("Socket.SendFile failed for {0}. error code {1}", path, ex.SocketErrorCode);
+        taskCompletion.TrySetException(ex);
+}catch(Exception ex){
+        taskCompletion.TrySetException(ex);
+}
+        }
+#else
+        public Task SendFile(string path, byte[] preBuffer, byte[] postBuffer, CancellationToken cancellationToken)
+        {
+            throw new NotImplementedException();
+        }
+#endif
+
         public void Dispose()
         {
             Socket.Dispose();
-- 
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