On Sun, Apr 21, 2013 at 9:25 PM, Donn Cave <d...@avvanta.com> wrote: > Quoth Evan Laforge <qdun...@gmail.com>, > >> sleep = Process.createProcess (Process.proc "sleep" ["5"]) > > sleep = Process.createProcess > ((Process.proc "sleep" ["5"]) {Process.close_fds = True}) > > > - Because the client uses buffered I/O (hGetContents in this case, but > hGet-anything would be the same), it doesn't "see" the server response > until a) buffer full, or b) end of file (server closes connection.) > > - The server does close the connection, but after the "sleep" process > has forked off with a copy of the connection fd. If it doesn't close > that fd explicitly, it holds it open until process exit (5 seconds.)
Oh I see, because the subprocess inherits the socket connection. That makes sense, though it's tricky. Tricky tricky unix. Why does fork() have to be so complicated? Thanks, that fixed my problem. _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe