This repository stores the implementation of MLDv1 router-side state machines. This can be used to detect multicast interest of directly connected hosts.
The goal of this repository/module is to facilitate maintainability of this MLD implementation since its code is used by other Python projects/modules:
- Linux machine
- Python3 (we have written all code to be compatible with at least Python v3.3)
- pip (to install all dependencies)
pip3 install py-mld
# import module
from mld import InterfaceMLD
intf = InterfaceMLD(interface_name="eth0")
intf.enable() # start receiving MLD packets
# get information from a given multicast group
multicast_group_obj = intf.interface_state.get_group_state(group_ip="ff05::10:11:12")
interest = multicast_group_obj.has_members() # boolean that informs if there is
# multicast interest in this group
group_state = multicast_group_obj.state.print_state() # get string identifying
# the state in which this
# group is at
# get notified of interest changes on this group
class MulticastGroupNotifier:
def notify_membership(self, has_members):
print(has_members)
notifier = MulticastGroupNotifier()
multicast_group_obj.add_multicast_routing_entry(notifier)
# when there is a change of multicast interest (for example group ff05::10:11:12
# gets interested receivers), the object associated to this object is notified
# through "notify_membership" method with has_members=True
# if you no longer want to monitor the interest of ff05::10:11:12, remove the
# notifier from the group
multicast_group_obj.remove_multicast_routing_entry(notifier)
intf.remove() # stop receiving MLD packets