[ale] Python (or other) socket identification

[philip at turmel.org (Phil Turmel)]

On 02/03/2017 03:50 PM, Alex Carver wrote:
> device_command_queue = Queue.Queue()
> 
> The device daemon thread just checks that queue in each loop to see if
> it's empty or not.  If it's not empty, it runs through it and works on
> the data.  The data is just tuples:  (IP_of_device, payload)

I'm saying put this work into the same thread that select()'s the
sockets for incoming data.  That thread has the true and threadsafe
list of sockets.

> Where I'm not following is making the weak reference.
> 
> So you're saying something like:
> 
> dict[IP] = weakref.ref(socket)
> 
> And then if the socket goes away, the IP key is still present but it
> will be pointing at None?

Or just use the WeakValueDictionary class. If the socket closes for any
reason, it will automatically disappear from the dictionary.

Phil