ERROR_PIPE_BUSY - All pipe instances are busy

From:
Manoj Jangid <manoj.jangid@gmail.com>
Newsgroups:
microsoft.public.vc.mfc
Date:
Tue, 10 Nov 2009 23:18:42 -0800 (PST)
Message-ID:
<a0081071-8fba-4689-a244-e4a292fdf261@g10g2000pri.googlegroups.com>
When I call CreateFile() second time I am getting error massege 231
[ERROR_PIPE_BUSY - All pipe instances are busy]

I am sending message from service application to client application.
Named pipe is create in service application and client application is
receving data from service application.

Service Application Functions
bool InitServer()
{
....
m_hServer = ::CreateNamedPipe(m_strPipeName,
            PIPE_ACCESS_OUTBOUND,
            PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE | PIPE_WAIT,
            PIPE_UNLIMITED_INSTANCES,
            sizeof maxSize,
            sizeof maxSize,
            NMPWAIT_USE_DEFAULT_WAIT,
            &sa);

....
....
}

Client Application

bool InitClient()
{
    DWORD dwError = 0;
    while (true)
    {
        m_hClient = ::CreateFile( m_strPipeName,
                    GENERIC_READ,
                    0,
                    0,
                    OPEN_EXISTING,
                    0,
                    0);
        if (m_hClient != INVALID_HANDLE_VALUE)
        {
            break;
        }
        if (GetLastError() != ERROR_PIPE_BUSY)
        {
            return false;
        }
        if (!WaitNamedPipe(m_strPipeName, 10000))
        {
            return false;
        }
    }
    return true;
}

Above client code working when I am connecting first time.
After restart client application I am getting above mentioned error.

WaitNamedPipe - this gives [Error Number - 121 The semaphore timeout
period has expired]

I close the handle properly when client disconnect.

any clue to solve this?

-Manoj

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