C#命名管道一对多进程间通讯，服务端和多客户端

1、创建一个管道池，保持内部有一个待链接的管道实例2、客户端去链接，系统会自动分配给客户端一个等待链接的服务端实例3、当服务端链接后，再创建一个新的待链接的管道实例4、当客户端断开链接或者超时，那么将自动销毁服务端实例保持管道池中至少有1个待链接的实例，但是不能超过上限数量。
               pipeServer.BeginWaitForConnection((o) =>
                {
                    NamedPipeServerStream server = (NamedPipeServerStream)o.AsyncState;
                    server.EndWaitForConnection(o);
                    work();
                    StreamReader sr = new StreamReader(server);
                    StreamWriter sw = new StreamWriter(server);
                    sw.AutoFlush = true;
                    string clientName = server.GetImpersonationUserName();
                    string result = sr.ReadLine();
                    while (result != null)
                    {
                        sw.WriteLine("ok");
                        this.Invoke((MethodInvoker)delegate { richTextBox1.Text = "收到 " clientName " : " result "\r\n";});
                        result = sr.ReadLine();
                    }
                    server.Close();
                }, pipeServer);