命名管道服务器未侦听

本文关键字:服务器 管道 | 更新日期: 2023-09-27 18:35:54

我正在尝试制作一个Windows服务,它只是坐下来侦听命名管道上的消息。但它不起作用。尝试连接到命名管道只会超时,当我在进程资源管理器中查看服务进程的进程句柄时,我看不到命名管道。

这是我到目前为止所拥有的:

namespace Service
{
    class Service : ServiceBase
    {
        Thread workerThread;
        static bool serviceStarted = false;
        static PipeSecurity pipeSecurity = new PipeSecurity();        
        public Service()
        {
            this.ServiceName = "Service";
            this.EventLog.Log = "Application";
            this.EventLog.Source = "ServiceName";
            this.CanHandlePowerEvent = false;
            this.CanHandleSessionChangeEvent = false;
            this.CanPauseAndContinue = false;
            this.CanShutdown = true;
            this.CanStop = true;
        }
        static void Main()
        {
            ServiceBase.Run(new Service());
        }
        protected override void OnStart(string[] args)
        {                
            base.OnStart(args);
            pipeSecurity.AddAccessRule(new PipeAccessRule("Authenticated Users", PipeAccessRights.ReadWrite, AccessControlType.Allow));
            pipeSecurity.AddAccessRule(new PipeAccessRule(WindowsIdentity.GetCurrent().User, PipeAccessRights.FullControl, AccessControlType.Allow));
            ThreadStart threadStart = new ThreadStart(WorkerThread);
            workerThread = new Thread(threadStart);
            workerThread.Start();
            serviceStarted = true;    
        }
        protected override void OnStop()
        {                
            base.OnStop();
            serviceStarted = false;
            workerThread.Join(new TimeSpan(0, 0, 30)); 
        }
        protected override void OnShutdown()
        {
            base.OnShutdown();
            serviceStarted = false;
        }
        protected override void Dispose(bool disposing)
        {
            base.Dispose(disposing);
        }
        private void WorkerThread()
        {
            while (serviceStarted)
            {
                try
                {
                    using (NamedPipeServerStream pipeServerStream = new NamedPipeServerStream("PipeName", PipeDirection.InOut, 1, PipeTransmissionMode.Message, PipeOptions.None, 128, 128, pipeSecurity))
                    {
                        pipeServerStream.WaitForConnection();
                        byte[] buffer = new byte[128];
                        StringBuilder message = new StringBuilder();
                        do
                        {
                            int len = pipeServerStream.Read(buffer, 0, buffer.Length);
                            message.Append(Encoding.UTF8.GetString(buffer, 0, len));
                        }
                        while (!pipeServerStream.IsMessageComplete);
                        EventLog.WriteEntry(message.ToString());
                    }
                }
                catch(Exception ex)
                {
                }
                finally
                {
                    if (serviceStarted)
                        Thread.Sleep(100);
                }
            }
            Thread.CurrentThread.Abort();
        }
    }
}

似乎命名管道只是没有被创建。 有什么想法吗? 当我尝试通过Powershell连接时:

PS C:'> $Client = New-Object System.IO.Pipes.NamedPipeClientStream(".", "PipeName", [System.IO.Pipes.PipeDirection]::Out)
PS C:'> $Client.Connect(1000)
Exception calling "Connect" with "1" argument(s): "The operation has timed out."
At line:1 char:1
+ $Client.Connect(1000)

命名管道服务器未侦听

   new NamedPipeServerStream("PipeName", ...)

该管道只能由在同一会话中运行的进程访问。 这是服务的会话 0。 Powershell 程序在桌面会话上运行。 要使其对所有会话可见,您必须在名称前面加上 "Global''"

顺便说一句,不要犹豫,添加一些日志记录,这样你就有确凿的证据证明管道服务器即将调用 WaitForConnection()。 这消除了你(和我们)的相当大的怀疑,即管道实际上在听。 使用空的捕获块会产生过多的 FUD。