Add packet to close device.

DiscImageChef.Devices/Device/Destructor.cs

@@ -50,18 +50,25 @@ namespace DiscImageChef.Devices
 
         public void Close()
         {
-            if(FileHandle == null) return;
+            if (_remote != null)
+            {
+                _remote.Close();
+                _remote.Disconnect();
+                return;
+            }
 
-            switch(PlatformId)
+            if (FileHandle == null) return;
+
+            switch (PlatformId)
             {
                 case PlatformID.Win32NT:
                     (FileHandle as SafeFileHandle)?.Close();
                     break;
                 case PlatformID.Linux:
-                    Extern.close((int)FileHandle);
+                    Extern.close((int) FileHandle);
                     break;
                 case PlatformID.FreeBSD:
-                    FreeBSD.Extern.cam_close_device((IntPtr)FileHandle);
+                    FreeBSD.Extern.cam_close_device((IntPtr) FileHandle);
                     break;
             }
 

DiscImageChef.Devices/Remote/Enums.cs

@@ -26,7 +26,8 @@ namespace DiscImageChef.Devices.Remote
         CommandGetFireWireData = 21,
         ResponseGetFireWireData = 22,
         CommandGetPcmciaData = 23,
-        ResponseGetPcmciaData = 24
+        ResponseGetPcmciaData = 24,
+        CommandCloseDevice = 25
     }
 
     public enum DicNopReason : byte

DiscImageChef.Devices/Remote/Remote.cs

@@ -1202,5 +1202,23 @@ namespace DiscImageChef.Devices.Remote
 
             return offset;
         }
+
+        public void Close()
+        {
+            var cmdPkt = new DicPacketCmdClose
+            {
+                hdr = new DicPacketHeader
+                {
+                    remote_id = Consts.RemoteId, packet_id = Consts.PacketId,
+                    len = (uint) Marshal.SizeOf<DicPacketCmdClose>(),
+                    version = Consts.PacketVersion,
+                    packetType = DicPacketType.CommandCloseDevice
+                }
+            };
+
+            var buf = Marshal.StructureToByteArrayLittleEndian(cmdPkt);
+
+            _socket.Send(buf, SocketFlags.None);
+        }
     }
 }

DiscImageChef.Devices/Remote/Structs.cs

@@ -306,4 +306,10 @@ namespace DiscImageChef.Devices.Remote
         [MarshalAs(UnmanagedType.ByValArray, SizeConst = 65536)]
         public byte[] cis;
     }
+
+    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
+    public struct DicPacketCmdClose
+    {
+        public DicPacketHeader hdr;
+    }
 }