Broadcast server

[swell]

I would like to write a server with the low level API of python (
socket+select and/or socket+thread ) that allow me to register client
and update them every X seconds ( could be the time, the temperature, a
stock quote, a message , ... ).

How to write the server that keep hot connections with clients and
update them when events are trigerred. I don't know how to begin this ,
i look at the python doc but the doc is more related to client updating
the server and i am not sure of the right design that could be use
here.

Thx
Manu

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Re: Broadcast server

[swell]

Hi Matt ,
  It sounds very interesting and i will definitely take a deeper look
but i was more considering something simpler as a learning exercise
more that finding a package that should already do what i want to
achieve.
I want to find the basic guidelines to write that kind of client/server
architecture and make some tests of different solutions(socket+select
or socket+thread or mix of them)

Your project seems very great and will try to read in to learn.

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Re: Broadcast server

[swell]

Yes but before going deeper ( too deep ) i would like to play with a
toy python example. Basically what i want to study first is a socket or
socket+select server and 5 clients that get time updated from the
server.

Don't really know how to keep hot connections without blocking the
server ? If someone can show me a quick and dirty example of the
client/server i'll apprciate it a lot.

Thx
Manu

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Re: Broadcast server

[swell]

Thx Alex,
  This is exactly what i want to look at . Async will definitely be
something i will look at . Does it make sense to mix async and threaded
server ( let say a threaded server accepting max 10 connections and
dealing with client request asynchronously ). Does it sounds you a good
design.

Of course i will have a look a twisted that sounds me doing all the job
( for sure better that i can do ) .

Thx
Manu

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PumpMessages et WM_QUIT

[swell]

I have a COM server that throw events that i catch after running the
event loop thanks to pythoncom.PumpMessages(). How can i stop and exit
this loop? I tried to use win32api.PostQuitMessage() but this has no
effect ( the doc says that WM_QUIT stops the PumpMessages loop but it
doesn't)

Does someone know how to exit gracefully from this loop?

Thx
Manu

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Tkinter and ActiveX event

[swell]

Hi,
  I want to integrate into an GUI a activeX component that generate
some events.
What i have done is :
  - Create the activeX component ( DispatchWithEvents method )
  - create the GUI
  - app.mainloop()

My pb is that i don't know how to take into account the events
generated by the activeX component into my Tk app main loop to update
the GUI for ex. Can someone spot me an example or give some clues?

Thx
Manu

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Tk eventloop

[swell]

Hi
I try/struggle to use an ActiveX component in a Tk app. When i execute
it i can catch the first event and then when i try to change the value
of the w widget everything blocks and nothing is updated anymore.

Does someone have an idea of what is wrong and how to smartly integrate
these events with the Tk event loop.

Thx
Manu

import win32com.client
import pythoncom
import MyComponent
from Tkinter import *

class Event1(MyComponent.IEvents):
def OnUpdate(self, ItemName, UserTag):
global w
v = ptrAx.getV(ItemName)
print "%s" % v
w.configure(text='a')

root = Tk()
w = Label(root,text="test")
w.pack()

ptrAx = win32com.client.DispatchWithEvents(r'MyComponent',Event1)
ptrAx.StartUpdates()

root.mainloop()

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Problem with smart pointers

[swell]

Hello,
I use the Boost.Python lib for a couple of weeks now and i am
facing a pb.
To sum up i have a small hierarchy of objects and have a factory to
build concrete object. The pb is i think aroud the auto_ptr object that
is not correctly managed by my code ( i use version 1.33 )
I think that the solution is obvious but i can't sort it out. If you
could have a look at this small test


struct X
{
 virtual int fun1() = 0;
 int fun2() { return 2;}
 virtual int fun3() { return -1; }
};

struct Y : public X
{
 int fun1() {return 1;}
 virtual fun3() { return 3; }
};

struct FactY
{
 static std:auto_ptr create() { return std:auto_ptr(new Y());}
};


BOOST_PYTHON_MODULE(hello)
{
 class_("X",no_init);
 class_ >("Y")
  .def("fun1",&Y::fun1)
  .def("fun2",&Y::fun2)
  .def("fun3",&Y::fun3)
 ;

 class_("FactY",no_init)
  .def("create",&FactY::create)
  .staticmethod("create")
 ;
}
 
Many Thx

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