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//
// System.Runtime.Remoting.Channels.Ipc.Win32.IpcTransport.cs
//
// Author: Robert Jordan (robertj@gmx.net)
//
// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
//
//
// 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.
//
#if NET_2_0
using System;
using System.IO;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Messaging;
using System.Runtime.Serialization.Formatters.Binary;
namespace System.Runtime.Remoting.Channels.Ipc.Win32
{
/// <summary>
/// IPC transport helper
/// </summary>
internal class IpcTransport
{
readonly NamedPipeSocket socket;
readonly BinaryFormatter formatter = new BinaryFormatter();
/// <summary>
/// Creates a new object.
/// </summary>
/// <param name="socket">The named pipe.</param>
public IpcTransport(NamedPipeSocket socket)
{
this.socket = socket;
}
/// <summary>
/// Writes a request.
/// </summary>
/// <param name="header"></param>
/// <param name="requestStream"></param>
public void Write(ITransportHeaders header, Stream requestStream)
{
Stream bs = socket.GetStream();
MemoryStream m = new MemoryStream();
formatter.Serialize(m, header);
m.Position = 0;
byte[] bytes = BitConverter.GetBytes((int)m.Length);
bs.Write(bytes, 0, bytes.Length);
m.WriteTo(bs);
try
{
bytes = BitConverter.GetBytes((int)requestStream.Length);
bs.Write(bytes, 0, bytes.Length);
IpcChannelHelper.Copy(requestStream, bs);
}
catch
{
bs.Write(bytes, 0, bytes.Length);
}
bs.Flush();
}
/// <summary>
/// Reads a response.
/// </summary>
/// <param name="headers"></param>
/// <param name="responseStream"></param>
public void Read(out ITransportHeaders headers, out Stream responseStream)
{
byte[] bytes;
long length;
bytes = BitConverter.GetBytes(int.MaxValue);
socket.Receive(bytes, 0, bytes.Length);
length = BitConverter.ToInt32(bytes, 0);
if (length != int.MaxValue && length > 0)
{
bytes = new byte[length];
socket.Receive(bytes, 0, (int)length);
MemoryStream m = new MemoryStream(bytes);
headers = (ITransportHeaders) formatter.Deserialize(m);
}
else
{
headers = new TransportHeaders();
}
bytes = BitConverter.GetBytes(int.MaxValue);
socket.Receive(bytes, 0, bytes.Length);
length = BitConverter.ToInt32(bytes, 0);
if (length != int.MaxValue && length > 0)
{
bytes = new byte[length];
socket.Receive(bytes, 0, (int)length);
responseStream = new MemoryStream(bytes);
}
else
{
responseStream = new MemoryStream(new byte[0]);
}
}
/// <summary>
/// Closes the unterlying named pipe socket.
/// </summary>
public void Close()
{
socket.Close();
}
}
}
#endif
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