1 files changed, 83 insertions, 0 deletions
diff --git a/Mono.Nat/Pmp/Mappers/PmpMapper.cs b/Mono.Nat/Pmp/Mappers/PmpMapper.cs
new file mode 100644
index 000000000..f33ca44c3
--- /dev/null
+++ b/Mono.Nat/Pmp/Mappers/PmpMapper.cs
@@ -0,0 +1,83 @@
+//
+// Authors:
+//   Nicholas Terry <nick.i.terry@gmail.com>
+//
+// Copyright (C) 2014 Nicholas Terry
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Net.Sockets;
+using System.Text;
+using Mono.Nat.Pmp;
+
+namespace Mono.Nat.Pmp.Mappers
+{
+    internal class PmpMapper : Pmp, IMapper
+    {
+        public event EventHandler<DeviceEventArgs> DeviceFound;
+
+        static PmpMapper()
+        {
+            CreateSocketsAndAddGateways();
+        }
+
+        public void Map(IPAddress gatewayAddress)
+        {
+            sockets.ForEach(x => Map(x, gatewayAddress));
+        }
+
+        void Map(UdpClient client, IPAddress gatewayAddress)
+        {
+            // The nat-pmp search message. Must be sent to GatewayIP:53531
+            byte[] buffer = new byte[] { PmpConstants.Version, PmpConstants.OperationCode };
+
+            client.Send(buffer, buffer.Length, new IPEndPoint(gatewayAddress, PmpConstants.ServerPort));
+        }
+
+        public void Handle(IPAddress localAddres, byte[] response)
+        {
+            //if (!IsSearchAddress(endpoint.Address))
+            //    return;
+            if (response.Length != 12)
+                return;
+            if (response[0] != PmpConstants.Version)
+                return;
+            if (response[1] != PmpConstants.ServerNoop)
+                return;
+            int errorcode = IPAddress.NetworkToHostOrder(BitConverter.ToInt16(response, 2));
+            if (errorcode != 0)
+                NatUtility.Log("Non zero error: {0}", errorcode);
+
+            IPAddress publicIp = new IPAddress(new byte[] { response[8], response[9], response[10], response[11] });
+            OnDeviceFound(new DeviceEventArgs(new PmpNatDevice(localAddres, publicIp)));
+        }
+
+        private void OnDeviceFound(DeviceEventArgs args)
+        {
+            if (DeviceFound != null)
+                DeviceFound(this, args);
+        }  
+    }
+}