Discover Zeroconf/Bonjour Nodes

pybonjour doesn't seem to be actively maintained. I'm using python-zeroconf.

pip install zeroconf

Here is an excerpt from a script I use to announce a Twisted-Autobahn WebSocket to an iOS device:

from zeroconf import ServiceInfo, Zeroconf

class WebSocketManager(service.Service, object):
    ws_service_name = 'Verasonics WebSocket'
    wsPort = None
    wsInfo = None

    def __init__(self, factory, portCallback):
        factory.protocol = BroadcastServerProtocol
        self.factory = factory
        self.portCallback = portCallback
        self.zeroconf = Zeroconf()

    def privilegedStartService(self):
        self.wsPort = reactor.listenTCP(0, self.factory)
        port = self.wsPort.getHost().port

        fqdn = socket.gethostname()
        ip_addr = socket.gethostbyname(fqdn)
        hostname = fqdn.split('.')[0]

        wsDesc = {'service': 'Verasonics Frame', 'version': '1.0.0'}
        self.wsInfo = ServiceInfo('_verasonics-ws._tcp.local.',
                                  hostname + ' ' + self.ws_service_name + '._verasonics-ws._tcp.local.',
                                  socket.inet_aton(ip_addr), port, 0, 0,
                                  wsDesc, hostname + '.local.')
        self.zeroconf.register_service(self.wsInfo)
        self.portCallback(port)

        return super(WebSocketManager, self).privilegedStartService()

    def stopService(self):
        self.zeroconf.unregister_service(self.wsInfo)

        self.wsPort.stopListening()
        return super(WebSocketManager , self).stopService()

dns-sd is the command line program that works on both windows and Mac OS X.

I often use it to tunnel iTunes shares over the internet with ssh. My typical use is dns-sd -P my_music _daap._tcp. local 3690 localhost 127.0.0.1. This assumes that I've set up an ssh tunnel listen on localhost port 3690 to port 3689 of the host sharing iTunes on the foreign network. This makes a little iTunes share icon appear in iTunes named "my_music".