How to use Sockets with wxPython?

[jblazi]

I am having this problem:
I use Python for my teaching and right now we are trying to implement some
sort of very simple graphical game the pupils can play across the
Internet. For this, we use wxPython.

Now it has turned out that wxPython does not implement wxWidget sockets,
so we have to use Python sockets instead. Implementing a separate thread
for this would be too complicated and I am going to use the wxIdle event
to do the socket processing, as the amount of data sent from one player to
the other is very small.

Could somebody show me, how to use Pythin socket in "polling mode" and
how to achieve this? I am not expecting a complete program, an outline of
the logic woul suffice.

TIA,

--
jb
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[DH]

jblazi wrote:

I am having this problem:
I use Python for my teaching and right now we are trying to implement some
sort of very simple graphical game the pupils can play across the
Internet. For this, we use wxPython.

Now it has turned out that wxPython does not implement wxWidget sockets,
so we have to use Python sockets instead. Implementing a separate thread
for this would be too complicated and I am going to use the wxIdle event
to do the socket processing, as the amount of data sent from one player to
the other is very small.

You might want to use Twisted instead. You need the very latest version
(1.2 or later) for it to work with wxPython:
http://www.twistedmatrix.com/products/twisted

You would use Twisted's wxreactor class. Look at the wxdemo.py file
under site-packages/TwistedDocs/examples/
See also this tutorial (part 2 on game networking) on using Twisted with
pygame: http://sjbrown.ezide.com/games/writing-games.html

[jblazi]

On Fri, 12 Mar 2004 15:49:42 -0600, DH wrote:

jblazi wrote:

I am having this problem:
I use Python for my teaching and right now we are trying to implement some
sort of very simple graphical game the pupils can play across the
Internet. For this, we use wxPython.

Now it has turned out that wxPython does not implement wxWidget sockets,
so we have to use Python sockets instead. Implementing a separate thread
for this would be too complicated and I am going to use the wxIdle event
to do the socket processing, as the amount of data sent from one player to
the other is very small.

You might want to use Twisted instead.

Thx, but I can't. If it does not work with the components I already have,
I am having trouble (and then wxPython would be useless as well, which I
do not believe).

--
jb

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[Josiah Carlson]

> I am having this problem:

I use Python for my teaching and right now we are trying to implement some
sort of very simple graphical game the pupils can play across the
Internet. For this, we use wxPython.

Now it has turned out that wxPython does not implement wxWidget sockets,
so we have to use Python sockets instead. Implementing a separate thread
for this would be too complicated and I am going to use the wxIdle event
to do the socket processing, as the amount of data sent from one player to
the other is very small.

Could somebody show me, how to use Pythin socket in "polling mode" and
how to achieve this? I am not expecting a complete program, an outline of
the logic woul suffice.

I would suggest you stay away from wxIdle events, if only because they
only occur under certain circumstances (in Windows, they seem to only
occur when the mouse is moved over the window).

Start with asyncore, and get everything working properly with that.

When it is working properly, do something like the following for your GUI:

import asyncore
import yourasyncorelibrary

#in the __init__ method of your main window class
#set up the server/clients/whatever

#using the new namespace
self.timer = wx.Timer(self, wx.NewId())
EVT_TIMER(self, self.timer.GetId(), self.SocketPoller)
self.timer.Start(10, wx.TIMER_CONTINUOUS)

def SocketPoller(self, event):
asyncore.poll()

If you properly designed your server and clients, the above should just
work. If you are willing to post information about your architecture or
protocol, I may be able to help you more.

- Josiah

[Josiah Carlson]

> EVT_TIMER(self, self.timer.GetId(), self.SocketPoller)

Oops, should be:

wx.EVT_TIMER(self, self.timer.GetId(), self.SocketPoller)