Question

Named Pipe

Asked by: lilya

I am using named pipe mechanism for interproces communication . My server programm cteates
local named pipe with one pipe instance, connects to the pipe and read.  After some timeout  it disconnect from pipe and close pipe handle. . After  disconnecting and closing the pipe handle,
server tries to create pipe with the same name and parameters and connects to it , but GetLastError
back error 231 (All pipe instances are busy. ERROR_PIPE_BUSY). In the client side I connect to the
pipe with CreateFile and write. I never close the pipe handle in the client programm.  What's  wrong in this scenario and what's the rihgt way for using named pipe ?
Yes. I close client pipe handle.

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Asked On
1998-04-04 at 21:25:50ID10046423
Tags

231

,

instances

,

createfile

Topic

C Programming Language

Participating Experts
3
Points
100
Comments
4

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Answers

 

by: eelkoPosted on 1998-04-05 at 03:14:41ID: 1258002

Shouldn't you close the pipe handle in the client program ?

 

by: lilyaPosted on 1998-04-05 at 04:17:12ID: 1258003

Edited text of question

 

by: q2guoPosted on 1998-04-07 at 06:51:49ID: 1258004

Hi Lilya

You said in your question:
"I never close the pipe handle in the client program"
"I close client pipe handle. "

I am confused, did you close the client pipe handle before recreating the pipe using the server, or didn't you?

 

by: danbalaPosted on 1998-04-07 at 15:57:59ID: 1258005

You have to cloes either the server's read end and the client's write end
or vice-versa! -before reading or writing to the pipe!!!

20120131-EE-VQP-002

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