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Named Pipes in Windows Service ?!

Can anybody show me how to do a named pipe server / client in a windows service ? i have a pipeserver in an app running on XPSP2 and Win2K / 2003 that works fine as an application, but as soon as i encapsulate it in a service the client dont seem to be able to write to it anymore ??

Really hope someone can help, its urgent. Thanks

ASKER CERTIFIED SOLUTION

jkr

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thordk

ASKER

Hi jkr !

Thanks for answering - i havent used the SD at all in my applications, but then i read somewhere that it was important if they were running as a service (can you confirm that ?). What i tried to put into as a service was:

SECURITY_ATTRIBUTES sa;
SECURITY_DESCRIPTOR sd;

InitializeSecurityDescriptor(&sd,SECURITY_DESCRIPTOR_REVISION);
SetSecurityDescriptorDacl(&sd,TRUE,NULL,FALSE);
SetSecurityDescriptorGroup(&sd,NULL, FALSE );
SetSecurityDescriptorSacl(&sd, FALSE, NULL, FALSE );

sa.nLength = sizeof(SECURITY_ATTRIBUTES);
sa.lpSecurityDescriptor = &sd;
sa.bInheritHandle = TRUE;
PipeHandle = CreateNamedPipe(PipeUNCname, PIPE_ACCESS_INBOUND, PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE, PIPE_UNLIMITED_INSTANCES, 0, 0, PIPE_BUFSIZE, &sa ));

- But do i have to something both on serverside and clientside ? some of the clients will run as services too.

jkr

Yes, you should try that for both ends of the pipe.

thordk

ASKER

Okay just to get it right; ill use the exact same SD in both end right ? i will try to make a test and return back to you, thanks alot.

thordk

ASKER

That appeared to have solved my problem ! thanks alot.