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Named Pipes Application Run on Windows 7 Virtual PC.

Posted on 2013-01-29
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Last Modified: 2013-02-08
Hi Experts,

I have an MFC application that uses Named Pipes.  It is working fine on a stand alone PC.  I try to use this same application on a Windows 7 Virtual workstation, but the message from the pipe client is not always sent to the same the virtual workstation.  What should I do to get this to work correctly?

Thanks in advance.
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Question by:ChiliPequin
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Assisted Solution

by:strivoli
strivoli earned 167 total points
ID: 38834322
The client is a physical PC that connects to a server which is a virtual W7?
Is the connection between client and server, reliable?
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LVL 80

Assisted Solution

by:David Johnson, CD, MVP
David Johnson, CD, MVP earned 333 total points
ID: 38834383
Which virtualization software is being used?
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Author Comment

by:ChiliPequin
ID: 38837339
Hi experts,

Both the client and the server reside in the same session of the Virtual Workstation.  Currently, the server uses the CreateNamedPipe with the name:  LPTSTR lpszPipeName = TEXT("\\\\.\\pipe\\myPipeApp");  Since we move this application to a virtual workstation, there are many other sessions; therefore, when the client sends the request, sometimes the request is routed to one session, other times, the request is routed to another session.  

I am thinking of replacing the . in the pipename to the IP address of the session on the V-workstation, but the create fails with error 123 when the . is replaced with the ip address like LPTSTR lpszPipeName = TEXT("\\\\12.34.567.89\\pipe\\myPipeApp");

Thanks.
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LVL 80

Assisted Solution

by:David Johnson, CD, MVP
David Johnson, CD, MVP earned 333 total points
ID: 38837631
to connect you would use \\192.168.0.100\pipe\pipename but the pipe must already be connected.

http://stackoverflow.com/questions/719353/win32-named-pipes-and-remote-clients
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Accepted Solution

by:
ChiliPequin earned 0 total points
ID: 38849736
Hi Experts,

Thank you very much for your input.  I have found a solution for my question.  After reading further on Microsoft document, I realize that from the server side, I can only use the dot for local server when I create a namedpipe.  I now append the virtual IP address to the name when I create a namedpipe.  This approach seems to work for me.

Thanks again for your advice.
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Author Closing Comment

by:ChiliPequin
ID: 38867431
This approach seems to solve the problem.
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