114 lines
3.8 KiB
C#
114 lines
3.8 KiB
C#
//
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// System.Runtime.Remoting.Channels.Ipc.Win32.NamedPipeClient.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.Runtime.InteropServices;
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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 client connections for local Named Pipes.
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/// </summary>
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internal class NamedPipeClient
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{
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readonly string pipeName;
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public string Name
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{
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get { return pipeName; }
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}
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/// <summary>
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/// Creates a new instance with the local Named Pipe name specified as an unique ID.
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/// </summary>
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/// <param name="uid">The Guid.</param>
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public NamedPipeClient(Guid uid)
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: this(uid.ToString("N"))
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{
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}
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/// <summary>
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/// Creates a new instance for the specified pipe name.
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/// </summary>
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/// <param name="pipeName">The pipe name omiting the leading <c>\\.\pipe\</c></param>
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public NamedPipeClient(string pipeName)
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{
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this.pipeName = NamedPipeHelper.FormatPipeName(pipeName);
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}
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/// <summary>
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/// Connects to a local Named Pipe server.
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/// </summary>
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/// <returns>The NamedPipeSocket</returns>
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public NamedPipeSocket Connect()
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{
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return Connect(2000);
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}
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/// <summary>
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/// Connects to a local Named Pipe server.
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/// </summary>
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/// <param name="timeout">Timeout in millisecons to wait for the connection.</param>
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/// <returns></returns>
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public NamedPipeSocket Connect(int timeout)
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{
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while (true)
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{
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IntPtr hPipe = NamedPipeHelper.CreateFile(
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pipeName,
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NamedPipeHelper.GENERIC_READ |
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NamedPipeHelper.GENERIC_WRITE,
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0,
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IntPtr.Zero,
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NamedPipeHelper.OPEN_EXISTING,
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0,
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IntPtr.Zero
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);
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if (hPipe.ToInt32() == NamedPipeHelper.INVALID_HANDLE_VALUE)
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{
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int lastError = Marshal.GetLastWin32Error();
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if (lastError != NamedPipeHelper.ERROR_PIPE_BUSY)
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throw new NamedPipeException(lastError);
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if (!NamedPipeHelper.WaitNamedPipe(pipeName, timeout))
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{
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throw new NamedPipeException();
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}
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}
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else
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{
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return new NamedPipeSocket(hPipe);
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}
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}
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}
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}
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}
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