Re: [ros-dev] Re: [ros-svn] [hbirr] 15457: Don't interpret STATUS_PIPE_CONNECTED as error.

[Alex Ionescu]

Hartmut Birr wrote:

>    
>
> You are right. Npfs returns the wrong status.
>
> - Hartmut
> _______________________________________________
> R
>  
Not necessarly, sometimes the client must interpret ERROR_PIPE_CONNECTED 
as a success:

"If the specified pipe handle is in nonblocking mode, /ConnectNamedPipe 
/always returns immediately. In nonblocking mode, /ConnectNamedPipe 
/returns a nonzero value the first time it is called for a pipe instance 
that is disconnected from a previous client. This indicates that the 
pipe is now available to be connected to a new client process. In all 
other situations when the pipe handle is in nonblocking mode, 
/ConnectNamedPipe /returns zero. In these situations, /GetLastError 
/returns ERROR_PIPE_LISTENING if no client is connected, 
ERROR_PIPE_CONNECTED if a client is connected, and ERROR_NO_DATA if a 
previous client has closed its pipe handle but the server has not 
disconnected. *Note that a good connection between client and server 
exists only after the ERROR_PIPE_CONNECTED error is received.*"

Best regards,
Alex Ionescu