OP_CODE_DIRECT = '00'
OP_CODE_REVERSE = '01'
OP_CODE_PROXY = '10'
OP_CODE_RESPONSE = '11'
PING_MESSAGE = 'ping'

SIZE_MESSAGE = 45

TIMEOUT_SECONDS = 1
MAX_WAIT = 1000

DEFAULT_PORT_A = 10000
DEFAULT_PORT_B = 10001
