Re: dynamic socket descriptor management

[Tim Müller <zen18864 zen co uk>]

On Wednesday 19 May 2004 03:46, Frank W. Miller wrote:

Hi,

> I've got a multi-threaded softphone GNOME client up and limping.
> I'm having some trouble writing to a socket.  The client seems to lock
> up when I try to do it from a thread.  I'm wondering whether I need to
> make use of gtk_input_add().  Trouble is, the socket I want to write to
> is "dynamic".  This means the user can change UDP ports and therefore
> cause the socket to be opened and closed on demand.  What are the
> implications for GNOME for doing this?  I've read that gtk_input_add()
> needs to be called before gtk_main().  This would clearly be violated by
> what I'm trying to do.


I don't really have a direct answer to your question, but I wonder if you had 
seen GNet (http://www.gnetlibrary.org). 

Their GUdpSocket interface is dead easy to use and ties in nicely with the 
Gtk/Gnome main loop stuff (either you regularly poll the socket with 
gnet_udp_has_packet(), or you get the GIOChannel of the UDP socket and add a 
watch with g_io_add_watch(), so your callback is called whenever a packet has 
been received or the socket is ready for writing).
  
   http://www.gnetlibrary.org/docs/gnet-udp.html

(It should be fairly easy to rip out the relevant files from the GNet source 
in case you don't want to depend on it).

Cheers
 -Tim