title: the use of windows completion port in named pipe
body: <p>I need to transfer data between processes, I have a local server process and multiple clients process, they may send data and receive data at the same time.I create the namedpipe and <code>CreateIoCompletionPort</code> in server. And when the client <code>CreateFile</code> , the <code>GetQueuedCompletionStatus</code> will return which is what I expect, however, when the client writefile, the server cannot get Completion port package, I want the server to be notified when client come , out and send message, how should I do? </p>
  
  <p>I know a little about the <code>PostQueuedCompletionStatus</code> function which can notify the completion port but I cannot get the Completion port handle in client process, could anyone tell me the common implementation, thanks!</p>