使用 C# FileStream 创建 Windows 命名管道

Question

在 FileStream class 的 docs 中，Remarks 部分说：

Use the FileStream class to read from, write to, open, and close files on a file system, and to manipulate other file-related operating system handles, including pipes, standard input, and standard output.

我知道 System.IO.Pipes 存在用于创建、读取和写入 Windows 中的管道，但由于我目前正在从事的项目的限制，我无法访问那个包裹。似乎 FileStreams 可以与管道交互，但我似乎无法找到任何有关如何执行此操作的示例。

如何直接使用 FileStream 对 Windows 中的命名管道进行基本 I/O？

Answer 1

using System;
using System.IO;
using System.Runtime.InteropServices;

namespace Test
{

    class Program
    {
        [DllImport("kernel32.dll", SetLastError = true)]
        static extern IntPtr CreateNamedPipe(string lpName, uint dwOpenMode,
           uint dwPipeMode, uint nMaxInstances, uint nOutBufferSize, uint nInBufferSize,
           uint nDefaultTimeOut, IntPtr lpSecurityAttributes);
        static uint PIPE_ACCESS_DUPLEX = 0x00000003;
        static uint PIPE_ACCESS_INBOUND = 0x00000001;
        static uint PIPE_ACCESS_OUTBOUND = 0x00000002;
        static uint FILE_FLAG_FIRST_PIPE_INSTANCE = 0x00080000;
        static uint FILE_FLAG_WRITE_THROUGH = 0x80000000;
        static uint FILE_FLAG_OVERLAPPED = 0x40000000;
        static uint WRITE_DAC = 0x00040000;
        static uint WRITE_OWNER = 0x00080000;
        static uint ACCESS_SYSTEM_SECURITY = 0x01000000;
        //One of the following type modes can be specified. The same type mode must be specified for each instance of the pipe.
        static uint PIPE_TYPE_BYTE = 0x00000000;
        static uint PIPE_TYPE_MESSAGE = 0x00000004;
        //One of the following read modes can be specified. Different instances of the same pipe can specify different read modes
        static uint PIPE_READMODE_BYTE = 0x00000000;
        static uint PIPE_READMODE_MESSAGE = 0x00000002;
        //One of the following wait modes can be specified. Different instances of the same pipe can specify different wait modes.
        static uint PIPE_WAIT = 0x00000000;
        static uint PIPE_NOWAIT = 0x00000001;
        //One of the following remote-client modes can be specified. Different instances of the same pipe can specify different remote-client modes.
        static uint PIPE_ACCEPT_REMOTE_CLIENTS = 0x00000000;
        static uint PIPE_REJECT_REMOTE_CLIENTS = 0x00000008;


        static void Main(string[] args)
        {

            Console.WriteLine("Hello World!");
            var name = "test";
            var p = CreateNamedPipe(@"\.\pipe\" + name, PIPE_ACCESS_OUTBOUND, PIPE_TYPE_MESSAGE | PIPE_WAIT, 255, 0, 4096, 0xffffffff, IntPtr.Zero);
            if (p.ToInt32() == -1)
            {
                throw new Exception("Error creating named pipe " + name + " . Internal error: " + Marshal.GetLastWin32Error().ToString());
            }
            var fs = new FileStream(new Microsoft.Win32.SafeHandles.SafeFileHandle(p, true), FileAccess.Write);
            fs.Close();
        }
    }
}

这似乎工作得很好。比我希望的要丑一些，但并非不可能。感谢@David Browne 为我指明了正确的方向。

更完整的示例：https://www.pinvoke.net/default.aspx/kernel32.createnamedpipe

使用 C# FileStream 创建 Windows 命名管道

Creating a Windows named pipe with a C# FileStream

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c#

named-pipes

filestream