Test program for using Avahi in Python

avahi-test.py

#!/usr/bin/python

# Test program for using Avahi in Python. Publishes a dummy service.

import sys
import avahi
import dbus
from twisted.internet import reactor

# Service details
name = "Avahi Interface Test"
port = 12345
stype = "_avahitest._tcp"
domain = ""
host = ""
text = ["hello=world"]

class AvahiInterfaceTest(object):

    def __init__(self, iface):
        print "Using network interface", iface
        self.iface = iface

    def start(self):
        bus = dbus.SystemBus()
        server = dbus.Interface(bus.get_object(avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER), avahi.DBUS_INTERFACE_SERVER)

        g = dbus.Interface(bus.get_object(avahi.DBUS_NAME, server.EntryGroupNew()), avahi.DBUS_INTERFACE_ENTRY_GROUP)
        g.AddService(self.iface, avahi.PROTO_UNSPEC, dbus.UInt32(0), name, stype, domain, host, dbus.UInt16(port), avahi.string_array_to_txt_array(text))

        g.Commit()
        self.group = g
        print "Avahi service has been published. Press Ctrl-C to quit."

    def stop(self):
        print "Stopping..."
        self.group.Reset()

if __name__ == "__main__":
    iface = avahi.IF_UNSPEC
    if len(sys.argv) >= 2:
        iface = int(sys.argv[1])
    ait = AvahiInterfaceTest(iface)
    reactor.callWhenRunning(ait.start)
    reactor.addSystemEventTrigger('before', 'shutdown', ait.stop)
    reactor.run()