ZeroMQ PUB/SUB pattern

I'm playing with zeromq for simple network communication/control. For a nice introduction with diagrams see Nicholas Piel's post "ZeroMQ an introduction"

Here is the PUBlish/SUBscribe patter, which usually consist of one Publisher and one or many Subscribers.

Publisher:

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import zmq
from random import choice
import time
 
context = zmq.Context()
socket = context.socket(zmq.PUB)
socket.bind("tcp://*:6000") # publish to anyone listening on port 6000
 
countries = ['netherlands','brazil','germany','portugal']
events = ['yellow card', 'red card', 'goal', 'corner', 'foul']
 
while True:
    msg = choice( countries ) +" "+ choice( events )
    print "PUB-> " ,msg
    socket.send( msg ) # PUBlisher only sends messages
    time.sleep(2)
 
# output:
# PUB-> netherlands yellow card
# PUB-> netherlands red card
# PUB-> portugal corner

And here is the Subscriber:

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import zmq
 
context = zmq.Context()
socket = context.socket(zmq.SUB)
# specific server:port to subscribe to
socket.connect("tcp://192.168.3.35:6000") 
# subscription filter, "" means subscribe to everything
socket.setsockopt(zmq.SUBSCRIBE, "") 
 
print "waiting.."
while True:
	msg = socket.recv() # SUBscriber only receives messages
	print "SUB -> %s" % msg
 
# typical output:
# waiting..
# SUB -> portugal corner
# SUB -> portugal foul
# SUB -> portugal foul

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