You may find the technique described here http://www.nntp.perl.org/group/perl.tcltk/2011/03/msg524.html of interest. I use it to talk to various sockets and to vlc via http all the time

In reply to Re: Gtk2 app on Windows, driving a background process by huck
in thread Gtk2 app on Windows, driving a background process by kikuchiyo

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