sending data to another process's input stream?

[Donn Cave]

"Joseph J. Strout" <joe at strout.net> writes:
|At 4:43 PM -0700 05/20/99, Paul Prescod wrote:
|>You can use os.popen2 or something like it. But the trick is that the app
|>that calls os.popen can't close or else it loses the file handle. So you
|>need a long running Python app.

| Got it.  Long-running Python app acts as a wrapper around the C++ program,
| and communicates with the short-lived Python CGIs via sockets -- which
| avoids having to put socket yuckiness into my C++ code.

Along with the socket yuckiness (sockaddr structs, network byte order,
stuff that Python does for you), you also get some functionality.
With its own bound socket, the C++ program is equipped to be a real
server, with a separate connection for each client, simultaneously
if you want.  And look out for buffering - cout will buffer output
to the pipe, so there's a potential for deadlock due to output that
has programmatically been "written" but is only buffered in the process.

	Donn Cave, University Computing Services, University of Washington
	donn at u.washington.edu