Re: win32 and glib, socket data inaccessible

["muppet" <scott asofyet org>]

Marc Lehmann said:
> I am trying to port a gtk2-perl program to windows (in theory an easy
> task).
>
> However, it's using sockets, and the only way to use them in a nonblocking
> way (under Gtk2) seems to be to use glib watchers. Now, the problem is
> that, when my callback gets called, glib has already read the data from
> the filehandle, and there doesn't seem to be support for giochannels in
> the Glib module, so there is no way to actually get the data.

Have you tried recv() instead of <> or sysread?  giochannel.h says "Contrary
to IO channels for file descriptors (on *Win32), you can use normal recv() or
recvfrom() on sockets even if GLib is polling them," and
g_io_channel_unix_new() on win32 calls g_io_channel_win32_new_socket() when it
determines that the fd is actually a socket.



> Is this a known problem or did I just miss the giochannel
> interface? (Sorry if it's the latter case).

Not a problem known to me, at least.

The only hint of the GIOChannel API visible at the perl level is
Glib::IO::add_watch().  This was by design, because GIOChannel provides
functionality normally provided by native perl file handles, and we made a
conscious effort not to duplicate these things.  Personally, i had no idea
that sockets behaved that way on win32.

So, er, it's probably broken.


-- 
muppet <scott at asofyet dot org>