142 lines
4.3 KiB
C#
142 lines
4.3 KiB
C#
//
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// System.Runtime.Remoting.Channels.Ipc.Win32.NamedPipeStream.cs
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//
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// Author: Robert Jordan (robertj@gmx.net)
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//
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// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
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//
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.IO;
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using System.Runtime.Remoting.Messaging;
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namespace System.Runtime.Remoting.Channels.Ipc.Win32
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{
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/// <summary>
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/// Provides the underlying stream of data for local Named Pipe access.
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/// </summary>
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internal class NamedPipeStream : Stream
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{
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readonly NamedPipeSocket socket;
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readonly bool ownsSocket;
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/// <summary>
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/// Creates a new instance of the NamedPipeStream class for the specified NamedPipeSocket.
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/// </summary>
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/// <param name="socket"></param>
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public NamedPipeStream(NamedPipeSocket socket, bool ownsSocket)
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{
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this.socket = socket;
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this.ownsSocket = ownsSocket;
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}
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public override bool CanRead
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{
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get { return true; }
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}
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public override bool CanSeek
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{
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get { return false; }
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}
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public override bool CanWrite
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{
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get { return true; }
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}
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public override long Length
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{
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get { throw new NotSupportedException(); }
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}
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public override long Position
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{
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get { throw new NotSupportedException(); }
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set { throw new NotSupportedException(); }
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}
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public override long Seek(long offset, SeekOrigin origin)
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{
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throw new NotSupportedException();
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}
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public override void SetLength(long value)
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{
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throw new NotSupportedException();
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}
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public override void Close()
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{
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if (ownsSocket) socket.Close();
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}
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public override void Flush()
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{
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}
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public override int Read(byte[] buffer, int offset, int count)
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{
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return socket.Receive(buffer, offset, count);
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}
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delegate int ReadMethod(byte[] buffer, int offset, int count);
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public override IAsyncResult BeginRead(byte[] buffer, int offset, int count,
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AsyncCallback callback, object state)
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{
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return new ReadMethod(Read).BeginInvoke(buffer, offset, count, callback, state);
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}
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public override int EndRead(IAsyncResult asyncResult)
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{
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AsyncResult ar = asyncResult as AsyncResult;
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return ((ReadMethod)ar.AsyncDelegate).EndInvoke(ar);
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}
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public override void Write(byte[] buffer, int offset, int count)
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{
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int written = socket.Send(buffer, offset, count);
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if (written != count)
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throw new IOException("Cannot write data");
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}
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delegate void WriteMethod(byte[] buffer, int offset, int count);
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public override IAsyncResult BeginWrite(byte[] buffer, int offset, int count,
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AsyncCallback callback, object state)
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{
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return new WriteMethod(Write).BeginInvoke(buffer, offset, count, callback, state);
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}
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public override void EndWrite(IAsyncResult asyncResult)
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{
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AsyncResult ar = asyncResult as AsyncResult;
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((WriteMethod)ar.AsyncDelegate).EndInvoke(asyncResult);
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}
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}
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}
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