//
// Authors:
//   Alan McGovern alan.mcgovern@gmail.com
//
// Copyright (C) 2006 Alan McGovern
//
// 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.Text;
using System.Xml;
using System.Net;

namespace Mono.Nat.Upnp
{
	internal class GetSpecificPortMappingEntryMessage : MessageBase
	{
		internal Protocol protocol;
		internal int externalPort;

		public GetSpecificPortMappingEntryMessage(Protocol protocol, int externalPort, UpnpNatDevice device)
			: base(device)
		{
			this.protocol = protocol;
			this.externalPort = externalPort;
		}

		public override WebRequest Encode(out byte[] body)
		{
			StringBuilder sb = new StringBuilder(64);
			XmlWriter writer = CreateWriter(sb);

			WriteFullElement(writer, "NewRemoteHost", string.Empty);
			WriteFullElement(writer, "NewExternalPort", externalPort.ToString());
			WriteFullElement(writer, "NewProtocol", protocol == Protocol.Tcp ? "TCP" : "UDP");
			writer.Flush();

			return CreateRequest("GetSpecificPortMappingEntry", sb.ToString(), out body);
		}
	}
}