def connect(redis_conn, key):
"""
Establishes connection with a node to:
1) Send version message
2) Receive version and verack message
3) Send getaddr message
4) Receive addr message containing list of peering nodes
Stores state and height for node in Redis.
"""
handshake_msgs = []
addr_msgs = []
redis_conn.hset(key, 'state', "") # Set Redis hash for a new node
(address, port) = key[5:].split("-", 1)
height = redis_conn.get('height')
if height is None:
height = 0
else:
height = int(height)
connection = Connection((address, int(port)),
socket_timeout=SETTINGS['socket_timeout'],
user_agent=SETTINGS['user_agent'],
height=height)
try:
logging.debug("Connecting to {}".format(connection.to_addr))
connection.open()
handshake_msgs = connection.handshake()
addr_msgs = connection.getaddr()
except (ProtocolError, ConnectionError, socket.error) as err:
logging.debug("{}: {}".format(connection.to_addr, err))
finally:
connection.close()
gevent.sleep(0.3)
redis_pipe = redis_conn.pipeline()
if len(handshake_msgs) > 0:
height_key = "height:{}-{}".format(address, port)
redis_pipe.setex(height_key, SETTINGS['max_age'],
handshake_msgs[0].get('height', 0))
now = int(time.time())
peers = enumerate_node(redis_pipe, addr_msgs, now)
logging.debug("{} Peers: {}".format(connection.to_addr, peers))
redis_pipe.hset(key, 'state', "up")
redis_pipe.execute()
def connect(redis_conn, key):
"""
Establishes connection with a node to:
1) Send version message
2) Receive version and verack message
3) Send getaddr message
4) Receive addr message containing list of peering nodes
Stores state and height for node in Redis.
"""
handshake_msgs = []
addr_msgs = []
redis_conn.hset(key, 'state', "") # Set Redis hash for a new node
(address, port) = key[5:].split("-", 1)
height = redis_conn.get('height')
if height is None:
height = 0
else:
height = int(height)
connection = Connection((address, int(port)),
socket_timeout=SETTINGS['socket_timeout'],
user_agent=SETTINGS['user_agent'],
height=height)
try:
logging.debug("Connecting to {}".format(connection.to_addr))
connection.open()
handshake_msgs = connection.handshake()
addr_msgs = connection.getaddr()
except (ProtocolError, ConnectionError, socket.error) as err:
logging.debug("{}: {}".format(connection.to_addr, err))
finally:
connection.close()
gevent.sleep(0.3)
redis_pipe = redis_conn.pipeline()
if len(handshake_msgs) > 0:
height_key = "height:{}-{}".format(address, port)
redis_pipe.setex(height_key, SETTINGS['max_age'],
handshake_msgs[0].get('height', 0))
now = int(time.time())
peers = enumerate_node(redis_pipe, addr_msgs, now)
logging.debug("{} Peers: {}".format(connection.to_addr, peers))
redis_pipe.hset(key, 'state', "up")
redis_pipe.execute()
def connect(redis_conn, key):
"""
Establishes connection with a node to:
1) Send version message
2) Receive version and verack message
3) Send getaddr message
4) Receive addr message containing list of peering nodes
Stores node in Redis.
"""
handshake_msgs = []
addr_msgs = []
redis_conn.hset(key, TAG_FIELD, "") # Set Redis hash for a new node
(address, port) = key[5:].split("-", 1)
start_height = int(redis_conn.get('start_height'))
connection = Connection((address, int(port)),
socket_timeout=SETTINGS['socket_timeout'],
user_agent=SETTINGS['user_agent'],
start_height=start_height)
try:
connection.open()
handshake_msgs = connection.handshake()
addr_msgs = connection.getaddr()
except (ProtocolError, socket.error) as err:
logging.debug("{}: {}".format(connection.to_addr, err))
finally:
connection.close()
redis_pipe = redis_conn.pipeline()
if len(handshake_msgs) > 0:
start_height_key = "start_height:{}-{}".format(address, port)
version_msg = handshake_msgs[0]
peers = enumerate_node(redis_pipe, start_height_key, version_msg,
addr_msgs)
logging.debug("[{}] Peers: {}".format(connection.to_addr, peers))
redis_pipe.hset(key, TAG_FIELD, GREEN)
redis_pipe.execute()
def connect(redis_conn, key):
"""
Establishes connection with a node to:
1) Send version message
2) Receive version and verack message
3) Send getaddr message
4) Receive addr message containing list of peering nodes
Stores node in Redis.
"""
handshake_msgs = []
addr_msg = {}
redis_conn.hset(key, TAG_FIELD, "") # Set Redis hash for a new node
(address, port) = key[5:].split("-", 1)
start_height = int(redis_conn.get('start_height'))
connection = Connection((address, int(port)),
socket_timeout=SETTINGS['socket_timeout'],
user_agent=SETTINGS['user_agent'],
start_height=start_height)
try:
connection.open()
handshake_msgs = connection.handshake()
addr_msg = connection.getaddr()
except ProtocolError as err:
logging.debug("{}".format(err))
except socket.error as err:
logging.debug("{}".format(err))
finally:
connection.close()
redis_pipe = redis_conn.pipeline()
if len(handshake_msgs) > 0:
addNode(handshake_msgs[0])
enumerate_node(redis_pipe, key, handshake_msgs[0], addr_msg)
redis_pipe.hset(key, TAG_FIELD, GREEN)
redis_pipe.execute()
