old_contents: #!/usr/bin/env python3
  
  """ Example of browsing for a service (in this case, HTTP) """
  
  import argparse
  import logging
  import socket
  from time import sleep
  from typing import cast
  
  from zeroconf import IPVersion, ServiceBrowser, ServiceStateChange, Zeroconf
  
  
  def on_service_state_change(
      zeroconf: Zeroconf, service_type: str, name: str, state_change: ServiceStateChange
  ) -> None:
      print("Service %s of type %s state changed: %s" % (name, service_type, state_change))
  
      if state_change is ServiceStateChange.Added:
          info = zeroconf.get_service_info(service_type, name)
          if info:
              addresses = ["%s:%d" % (socket.inet_ntoa(addr), cast(int, info.port)) for addr in info.addresses]
              print("  Addresses: %s" % ", ".join(addresses))
              print("  Weight: %d, priority: %d" % (info.weight, info.priority))
              print("  Server: %s" % (info.server,))
              if info.properties:
                  print("  Properties are:")
                  for key, value in info.properties.items():
                      print("    %s: %s" % (key, value))
              else:
                  print("  No properties")
          else:
              print("  No info")
          print('\n')
  
  
  if __name__ == '__main__':
      logging.basicConfig(level=logging.DEBUG)
  
      parser = argparse.ArgumentParser()
      parser.add_argument('--debug', action='store_true')
      version_group = parser.add_mutually_exclusive_group()
      version_group.add_argument('--v6', action='store_true')
      version_group.add_argument('--v6-only', action='store_true')
      args = parser.parse_args()
  
      if args.debug:
          logging.getLogger('zeroconf').setLevel(logging.DEBUG)
      if args.v6:
          ip_version = IPVersion.All
      elif args.v6_only:
          ip_version = IPVersion.V6Only
      else:
          ip_version = IPVersion.V4Only
  
      zeroconf = Zeroconf(ip_version=ip_version)
      print("\nBrowsing services, press Ctrl-C to exit...\n")
      browser = ServiceBrowser(
          zeroconf, ["_http._tcp.local.", "_hap._tcp.local."], handlers=[on_service_state_change]
      )
  
      try:
          while True:
              sleep(0.1)
      except KeyboardInterrupt:
          pass
      finally:
          zeroconf.close()
  
new_contents: #!/usr/bin/env python3
  
  """ Example of browsing for a service.
  
  The default is HTTP and HAP; use --find to search for all available services in the network
  """
  
  import argparse
  import logging
  import socket
  from time import sleep
  from typing import cast
  
  from zeroconf import IPVersion, ServiceBrowser, ServiceStateChange, Zeroconf, ZeroconfServiceTypes
  
  
  def on_service_state_change(
      zeroconf: Zeroconf, service_type: str, name: str, state_change: ServiceStateChange
  ) -> None:
      print("Service %s of type %s state changed: %s" % (name, service_type, state_change))
  
      if state_change is ServiceStateChange.Added:
          info = zeroconf.get_service_info(service_type, name)
          print("Info from zeroconf.get_service_info: %r" % (info))
          if info:
              addresses = ["%s:%d" % (socket.inet_ntoa(addr), cast(int, info.port)) for addr in info.addresses]
              print("  Addresses: %s" % ", ".join(addresses))
              print("  Weight: %d, priority: %d" % (info.weight, info.priority))
              print("  Server: %s" % (info.server,))
              if info.properties:
                  print("  Properties are:")
                  for key, value in info.properties.items():
                      print("    %s: %s" % (key, value))
              else:
                  print("  No properties")
          else:
              print("  No info")
          print('\n')
  
  
  if __name__ == '__main__':
      logging.basicConfig(level=logging.DEBUG)
  
      parser = argparse.ArgumentParser()
      parser.add_argument('--debug', action='store_true')
      parser.add_argument('--find', action='store_true', help='Browse all available services')
      version_group = parser.add_mutually_exclusive_group()
      version_group.add_argument('--v6', action='store_true')
      version_group.add_argument('--v6-only', action='store_true')
      args = parser.parse_args()
  
      if args.debug:
          logging.getLogger('zeroconf').setLevel(logging.DEBUG)
      if args.v6:
          ip_version = IPVersion.All
      elif args.v6_only:
          ip_version = IPVersion.V6Only
      else:
          ip_version = IPVersion.V4Only
  
      zeroconf = Zeroconf(ip_version=ip_version)
  
      services = ["_http._tcp.local.", "_hap._tcp.local."]
      if args.find:
          services = list(ZeroconfServiceTypes.find(zc=zeroconf))
  
      print("\nBrowsing %d service(s), press Ctrl-C to exit...\n" % len(services))
      browser = ServiceBrowser(zeroconf, services, handlers=[on_service_state_change])
  
      try:
          while True:
              sleep(0.1)
      except KeyboardInterrupt:
          pass
      finally:
          zeroconf.close()
  
subject: Add --find option to example/browser.py (#263, rebased #175)