sockets, select or: twisted and other file-descriptors

[Diez B. Roggisch]

Hi,

I have a simple client-server app, that sits on a serial port and
communicates through that with an attached microcontroller-board. To the
outside, it exposes two sockets (file or inet) which can be connected by
clients to perform certain tasks like uploading programs, giving me a
console and resetting the board. So far, I've used threads - every incoming
connection generates one that will listen to the client socket using
socket.recv. Whatever comes from there is transmitted to the mc-board. The
answer is broadcasted to all listenig clients.

I now want to rewrite it using select and no more threads. If it was only a
network-application, I'd try to make my first steps using twisted. However,
I'm not sure if its possible to have twisteds select also take my
filedescriptors for the serial connection.

I could go for a two-thread approach, or maybe I can overload some twisted
class so that it works on my serial line as if it was a socket connection.

Any suggestions? 

Regards,

Diez