在单个进程中使用匿名PipeStreams时拒绝访问

我需要在同一进程中有一个匿名管道,以允许两个库之间基于流的异步通信。

一切正常,直到我打电话给流。读取()-我收到UnauthorizedAccessException-拒绝访问路径。有什么想法吗?

using (var pipeServer = new AnonymousPipeServerStream(PipeDirection.Out))
using (var pipeClient = new AnonymousPipeClientStream(PipeDirection.In, pipeServer.SafePipeHandle))
{
    // External lib should close server pipe when it's done
    archFile.ExtractionFinished += (sender, args) => pipeServer.Close();
    archFile.BeginExtractFile(archFileName, pipeServer);

    var buf = new byte[1000];

    int read;
    while ((read = pipeClient.Read(buf, 0, buf.Length)) > 0)
    { ... }
}