text: HEADER_SIZE = 10
  TCP_PACKET_SIZE = 1024
  UDP_MSS = 3072
  UDP_MAX_PACKET_SIZE = 4096
  KEEP_ALIVE_TIME = 1
  KEEP_ALIVE_INTERVAL = 10
  MAX_PROBES = 5
  TIMEOUT = 180
  TCP_SERVER_PORT = 9090
  UDP_SERVER_PORT = 9091
  IS_LOCAL_HOST = False
  BIT_RATE_KBPS = 1 / 8 / 1024
  WINDOWS_SIZE = 12
  