Raphael Päbst
This is probably a question that shows my incompetence more than anything else, but I'm stuck with some TCP programming.
I have some code that looks like this:
hdl <- open TCP connection message <- hGetContents hdl answer <- do stuff with message hPut hdl answer hClose hdl
My problem is that the stuff that gets done with message happens, but only after I close the connection rom the client's side and then of course it is too late to get the answer out of said connection.
What am I doing wrong?
You are using lazy I/O, which is in general unpredictable. You have almost no control over when the handle is closed. If you want predictable yet elegant I/O, I recommend an iteratee-based approach. There is a nice online tutorial in the Yesod book [1]. [1] http://www.yesodweb.com/book/enumerator BTW, I like your "hab dich lieb" handle. =P Greets, Ertugrul -- nightmare = unsafePerformIO (getWrongWife >>= sex) http://ertes.de/