Add the files

ProxyServer/PortMapListener.cs

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+/*
+    Copyright © 2002, The KPD-Team
+    All rights reserved.
+    http://www.mentalis.org/
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions
+  are met:
+
+    - Redistributions of source code must retain the above copyright
+       notice, this list of conditions and the following disclaimer. 
+
+    - Neither the name of the KPD-Team, nor the names of its contributors
+       may be used to endorse or promote products derived from this
+       software without specific prior written permission. 
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+  FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+  THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+  OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+using System;
+using System.Net;
+using System.Net.Sockets;
+using Org.Mentalis.Proxy;
+
+namespace Org.Mentalis.Proxy.PortMap {
+
+///<summary>Listens on a specific port on the proxy server and forwards all incoming data to a specific port on another server.</summary>
+public sealed class PortMapListener : Listener {
+	///<summary>Initializes a new instance of the PortMapListener class.</summary>
+	///<param name="Port">The port to listen on.</param>
+	///<param name="MapToIP">The address to forward to.</param>
+	///<remarks>The object will listen on all network addresses on the computer.</remarks>
+	///<exception cref="ArgumentException"><paramref name="Port">Port</paramref> is not positive.</exception>
+	///<exception cref="ArgumentNullException"><paramref name="MapToIP">MapToIP</paramref> is null.</exception>
+	public PortMapListener(int Port, IPEndPoint MapToIP) : this(IPAddress.Any, Port, MapToIP) {}
+	///<summary>Initializes a new instance of the PortMapListener class.</summary>
+	///<param name="Port">The port to listen on.</param>
+	///<param name="Address">The network address to listen on.</param>
+	///<param name="MapToIP">The address to forward to.</param>
+	///<remarks>For security reasons, <paramref name="Address">Address</paramref> should not be IPAddress.Any.</remarks>
+	///<exception cref="ArgumentNullException">Address or <paramref name="MapToIP">MapToIP</paramref> is null.</exception>
+	///<exception cref="ArgumentException">Port is not positive.</exception>
+	public PortMapListener(IPAddress Address, int Port, IPEndPoint MapToIP) : base(Port, Address) {
+		MapTo = MapToIP;
+	}
+	///<summary>Initializes a new instance of the PortMapListener class.</summary>
+	///<param name="Port">The port to listen on.</param>
+	///<param name="Address">The network address to listen on.</param>
+	///<param name="MapToPort">The port to forward to.</param>
+	///<param name="MapToAddress">The IP address to forward to.</param>
+	///<remarks>For security reasons, Address should not be IPAddress.Any.</remarks>
+	///<exception cref="ArgumentNullException">Address or MapToAddress is null.</exception>
+	///<exception cref="ArgumentException">Port or MapToPort is invalid.</exception>
+	public PortMapListener(IPAddress Address, int Port, IPAddress MapToAddress, int MapToPort) : this(Address, Port, new IPEndPoint(MapToAddress, MapToPort)) {}
+	///<summary>Gets or sets the IP EndPoint to map all incoming traffic to.</summary>
+	///<value>An IPEndPoint that holds the IP address and port to use when redirecting incoming traffic.</value>
+	///<exception cref="ArgumentNullException">The specified value is null.</exception>
+	///<returns>An IP EndPoint specifying the host and port to map all incoming traffic to.</returns>
+	private IPEndPoint MapTo {
+		get {
+			return m_MapTo;
+		}
+		set {
+			if (value == null)
+				throw new ArgumentNullException();
+			m_MapTo = value;
+		}
+	}
+	///<summary>Called when there's an incoming client connection waiting to be accepted.</summary>
+	///<param name="ar">The result of the asynchronous operation.</param>
+	public override void OnAccept(IAsyncResult ar) {
+		try {
+			Socket NewSocket = ListenSocket.EndAccept(ar);
+			if (NewSocket != null) {
+				PortMapClient NewClient = new PortMapClient(NewSocket, new DestroyDelegate(this.RemoveClient), MapTo);
+				AddClient(NewClient);
+				NewClient.StartHandshake();
+			}
+		} catch {}
+		try {
+			//Restart Listening
+			ListenSocket.BeginAccept(new AsyncCallback(this.OnAccept), ListenSocket);
+		} catch {
+			Dispose();
+		}
+	}
+	///<summary>Returns a string representation of this object.</summary>
+	///<returns>A string with information about this object.</returns>
+	public override string ToString() {
+		return "PORTMAP service on " + Address.ToString() + ":" + Port.ToString();
+	}
+	///<summary>Returns a string that holds all the construction information for this object.</summary>
+	///<value>A string that holds all the construction information for this object.</value>
+	public override string ConstructString {
+		get {
+			return "host:" + Address.ToString() + ";int:" + Port.ToString() + ";host:" + MapTo.Address.ToString() + ";int:" + MapTo.Port.ToString();
+		}
+	}
+	// private variables
+	/// <summary>Holds the value of the MapTo property.</summary>
+	private IPEndPoint m_MapTo;
+}
+
+}