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//
// System.Runtime.Remoting.Channels.Ipc.Win32.NamedPipeStream.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.
//
using System;
using System.IO;
using System.Runtime.Remoting.Messaging;
namespace System.Runtime.Remoting.Channels.Ipc.Win32
{
/// <summary>
/// Provides the underlying stream of data for local Named Pipe access.
/// </summary>
internal class NamedPipeStream : Stream
{
readonly NamedPipeSocket socket;
readonly bool ownsSocket;
/// <summary>
/// Creates a new instance of the NamedPipeStream class for the specified NamedPipeSocket.
/// </summary>
/// <param name="socket"></param>
public NamedPipeStream(NamedPipeSocket socket, bool ownsSocket)
{
this.socket = socket;
this.ownsSocket = ownsSocket;
}
public override bool CanRead
{
get { return true; }
}
public override bool CanSeek
{
get { return false; }
}
public override bool CanWrite
{
get { return true; }
}
public override long Length
{
get { throw new NotSupportedException(); }
}
public override long Position
{
get { throw new NotSupportedException(); }
set { throw new NotSupportedException(); }
}
public override long Seek(long offset, SeekOrigin origin)
{
throw new NotSupportedException();
}
public override void SetLength(long value)
{
throw new NotSupportedException();
}
public override void Close()
{
if (ownsSocket) socket.Close();
}
public override void Flush()
{
}
public override int Read(byte[] buffer, int offset, int count)
{
return socket.Receive(buffer, offset, count);
}
delegate int ReadMethod(byte[] buffer, int offset, int count);
public override IAsyncResult BeginRead(byte[] buffer, int offset, int count,
AsyncCallback callback, object state)
{
return new ReadMethod(Read).BeginInvoke(buffer, offset, count, callback, state);
}
public override int EndRead(IAsyncResult asyncResult)
{
AsyncResult ar = asyncResult as AsyncResult;
return ((ReadMethod)ar.AsyncDelegate).EndInvoke(ar);
}
public override void Write(byte[] buffer, int offset, int count)
{
int written = socket.Send(buffer, offset, count);
if (written != count)
throw new IOException("Cannot write data");
}
delegate void WriteMethod(byte[] buffer, int offset, int count);
public override IAsyncResult BeginWrite(byte[] buffer, int offset, int count,
AsyncCallback callback, object state)
{
return new WriteMethod(Write).BeginInvoke(buffer, offset, count, callback, state);
}
public override void EndWrite(IAsyncResult asyncResult)
{
AsyncResult ar = asyncResult as AsyncResult;
((WriteMethod)ar.AsyncDelegate).EndInvoke(asyncResult);
}
}
}
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