def PING(self, timestamp_str):
self.send_signed("PONG\t%s" % utils.utcstamp().strftime('%Y-%m-%d %H:%M:%S.%f'))
if timestamp_str:
# We cannot adjust for latency since we don't ping the client
parsed_time = datetime.strptime(timestamp_str, '%Y-%m-%d %H:%M:%S.%f')
self.client_timedelta = utils.utcstamp() - parsed_time
return
def keepalive_callback(self):
# Immediately register another callback for a later time
self.keepalive_timer = reactor.callLater(self.keepalive_timeout.seconds, self.keepalive_callback)
if (utils.utcstamp() - self.last_activity < self.keepalive_timeout):
# We're good
return
self.send_signed("KEEPALIVE\t%s" % utils.utcstamp().strftime('%Y-%m-%d %H:%M:%S.%f'))
def PONG(self, timestamp_str):
# Safety, make sure we adjust latency only if we called the ping method
if self.pinged:
self.latency = utils.utcstamp() - self.pinged
self.pinged = None
# Calculate delta to server time
if self.latency:
parsed_time = datetime.strptime(timestamp_str, '%Y-%m-%d %H:%M:%S.%f')
self.server_timedelta = utils.utcstamp() - parsed_time - self.latency
def lineReceived(self, data):
print "got data: %s" % data
message = self.verify_data(data)
if message == False:
self.send_signed("ERROR\tHash mismatch")
self.transport.loseConnection()
return
self.last_activity = utils.utcstamp()
self.parse_message(message)
def send_signed(self, message):
raw = self.hmac_wrapper.sign(message) + "\n";
print "Sending: %s" % raw
self.transport.write(raw)
self.last_activity = utils.utcstamp()
def ping(self):
self.send_signed("PING\t%s" % utils.utcstamp().strftime('%Y-%m-%d %H:%M:%S.%f'))
self.pinged = utils.utcstamp()