Stub tree updater in python for Charles

forest.py

from threading import Thread, Timer
import socket

# Open a UDP netcat session to this with `nc -vu localhost 1337`
# It takes updates in the form "key value" and will print out the current state from the "sender" thread every 5s

state = {
}

def read_state(socket):
    while True:
        data, addr = socket.recvfrom(1024)
        update = {}
        try:
            for line in data.splitlines():
                key, value = line.split(" ")
                update[key] = value
            state.update(update)
        except Exception, e:
            print "Error parsing update: ", e

def send_state():
    for key, value in state.items():
        # This is where you should be firing off UDP packets
        print key, value

    # This should be 0.04 for 25fps, is 5 for testing
    Timer(5, send_state).start()

if __name__ == "__main__":
    sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    sock.bind(("0.0.0.0", 1337))

    send_state()

    t = Thread(target=read_state, args=(sock,))
    t.start()
    t.join()