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)
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。