def __init__(self, batch_size, sending_interval, wireless_interface, data_store):
"""
Initialize an aDTN instance and its respective key manager and message store, as well as a sending message pool
from which the next sending batch gets generated.
Define aDTNInnerPacket to be the payload of aDTNPacket. Define aDTNPacket to be the payload of Ethernet frames
of type 0xcafe.
Set up a scheduler to handle message sending.
Define a thread to handle received messages.
The wireless interface should be previously set to ad-hoc mode and its ESSID should be the same in other devices
running aDTN.
:param batch_size: number of packets to transmit at each sending operation
:param sending_interval: number of seconds between two sending operations
:param wireless_interface: wireless interface to send and receive packets
"""
self._batch_size = batch_size
self._sending_freq = sending_interval
self._wireless_interface = wireless_interface
self._km = KeyManager()
self.data_store = DataStore(data_store)
self._sending_pool = []
self._scheduler = sched.scheduler(time, sleep)
self._sending = None
self._sniffing = None
self._thread_send = None
self._thread_receive = None
self._sent_pkt_counter = None
self._received_pkt_counter = None
self._decrypted_pkt_counter = None
self._start_time = None
self._mac_address = macget(getcard(wireless_interface))
self._sending_socket = L2Socket(iface=self._wireless_interface)
bind_layers(aDTNPacket, aDTNInnerPacket)
bind_layers(Ether, aDTNPacket, type=ETHERTYPE)
log_debug("MAC address in use: {}".format(self._mac_address))
self._stats_file_name = '{}_{}.stats'.format(batch_size, sending_interval)
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