Private Decentralized Communication Network
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from threading import Thread
from time import sleep
from typing import TYPE_CHECKING
if TYPE_CHECKING:
from socket import socket
from onionrplugins import onionrevents
from ..peer import Peer
from ..commands import GossipCommands, command_to_byte
from ..constants import PEER_AMOUNT_TO_ASK, TRANSPORT_SIZE_BYTES
from .. import connectpeer
from ..peerset import gossip_peer_set
MAX_PEERS = 10
def _ask_peer(peer):
s: 'socket' = peer.get_socket(12)
s.sendall(command_to_byte(GossipCommands.PEER_EXCHANGE))
# Get 10 max peers
for _ in range(MAX_PEERS):
peer = b''
c = b''
while c != b'\n':
c = s.recv(1)
peer += c
if not peer:
break
connect_data = {
'address': peer,
'callback': connectpeer.connect_peer
}
onionrevents.event('announce_rec', data=connect_data, threaded=True)
s.close()
def get_new_peers():
if not len(gossip_peer_set):
raise ValueError("Peer set empty")
# Deep copy the peer list
peer_list: Peer = list(gossip_peer_set)
peers_we_ask: Peer = []
asked_count = 0
while asked_count < PEER_AMOUNT_TO_ASK:
try:
peers_we_ask.append(peer_list.pop())
except IndexError:
break
asked_count += 1
if not len(peers_we_ask):
raise ValueError("No peers present in pool during get_new_peers")
peer_list.clear() # Clear the deep copy so it doesn't occupy memory
# Start threads to ask the peers for more peers
threads = []
for peer in peers_we_ask:
t = Thread(target=_ask_peer, args=[peer], daemon=True)
t.start()
threads.append(t)
peers_we_ask.clear()
# Wait for the threads to finish because this function is on a timer
for thread in threads:
thread.join()