def find_node_thread():
# UDP 소켓 생성
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM,
socket.IPPROTO_UDP)
# 소켓에 브로드캐스트 옵션 설정
sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
# 포트 번호와 로컬 주소에 바인딩
sock.bind(('', PING_PORT_NUMBER))
# zmq라이브러리를 이용해 UDP 소켓을 폴링
poller = zmq.Poller()
poller.register(sock, zmq.POLLIN)
# 실행 시 ping 전송
ping_at = time.time()
while is_running:
# 타이머 설정
timeout = ping_at - time.time()
if timeout < 0:
timeout = 0
try:
events = dict(poller.poll(1000 * timeout))
except KeyboardInterrupt:
print("interrupted")
break
# ping 으로부터 응답이 오는 경우 노드 추가
if sock.fileno() in events:
msg, addrinfo = sock.recvfrom(PING_MSG_SIZE)
ip = addrinfo[0]
print("ping received from " + ip)
# 노드 리스트에 추가
# 자기 자신은 제외시켜야 함 (추후)
n = node.Node(ip)
node.add_node(n)
# 일정 주기 마다 브로드캐스트로 ping
if time.time() >= ping_at:
sock.sendto(b'!', 0, ("255.255.255.255", PING_PORT_NUMBER))
ping_at = time.time() + PING_INTERVAL
def find_node_thread():
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM,
socket.IPPROTO_UDP)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
sock.bind(('', PING_PORT_NUMBER))
t = threading.Thread(target=find_node_thread)
poller = zmq.Poller()
poller.register(sock, zmq.POLLIN)
ping_at = time.time()
# is_running
while True:
timeout = ping_at - time.time()
if timeout < 0:
timeout = 0
try:
events = dict(poller.poll(1000 * timeout))
except KeyboardInterrupt:
print("interrupted")
break
if sock.fileno() in events:
msg, addrinfo = sock.recvfrom(PING_MSG_SIZE)
ip = addrinfo[0]
n = node.Node(ip)
if node.add_node(n):
# print('Find ' + ip)
log.write('Find ' + ip)
if time.time() >= ping_at:
print('Finding a node...')
sock.sendto(b'!', 0, ("255.255.255.255", PING_PORT_NUMBER))
ping_at = time.time() + PING_INTERVAL
t.start()
if ch == '':
menu_actions['main_menu']()
else:
try:
menu_actions[ch]()
except:
print("Invalid selection")
menu_actions['main_menu']()
menu_actions = {
'main_menu': main_menu,
'1': send_tx,
'2': show_node_list,
'3': show_transaction_list,
'4': show_block_list,
'0': exit,
}
import threading
from app.communicator import receiver
storage.init()
node.add_node(node.Node("192.168.40.18"))
node.add_node(node.Node("192.168.40.17"))
node.add_node(node.Node("192.168.40.6"))
# transaction.add_transaction(transaction.create_tx("","","aaa"))
listen_thread = threading.Thread(target=receiver.start, args=("LT", "192.168.40.18", 3399))
listen_thread.start()
main_menu()