🚀 go-pugleaf

"T. Meyer" <timon@mustek.de> wrote in message
news:44e56623$1@newsgroups.borland.com...

> Using FILE_FLAG_OVERLAPPED does not solve my
> problem, still I get The handle is invalid on reading from pipe :-(

Then you are still not doing something correctly.  What does the code look
like on the server side?  Did you create the pipe in full duplex mode?  You
probably have a mismatch in flags being used on both ends of the pipe.

> Just to get it right the event is signaled if an amount of bytes
> were sent, but there can be still bytes to send left?

Yes.

> E.g. the server wants to send 100 bytes, my client receives 40 bytes
> and singnals the event, then I have to call GetOverlappedResult to see
> that only 40 bytes were tranmsitted?

Yes.  If the pipe mode is set to PIPE_TYPE_BYTE, then ReadFile() will return
as many bytes as are available on the pipe, up to the specified count.  If
the pipe mode is set to PIPE_TYPE_MESSAGE, on the other hand, then
ReadFile() will fail if the requested count is smaller then the sent
message.  GetLastError() will then return ERROR_MORE_DATA.

> How to I get the rest 60 bytes?

Call ReadFile() again, specifying the remaining number of bytes.

> Still wait the next evt signaled

You have to call ReadFile() first to start a new overlapped operation.


Gambit