connection_debug.py 文件源码

def test_telnet(hostname):
  # This attempts to test the validity of a controller
  # It returns a tuple (probably not the best way to do this) which is in the format:
  # Initial Connection Test (bool), Version Response Test (bool), Version Response (str)
  try:
    tn = telnetlib.Telnet(host=hostname, timeout=3)
  except socket.timeout:
    return False, False, None
  try:
    tn.write("n\r\n")
    version_string = tn.read_until("}",3)
  except:
    return True, False, None
  return True, True, version_string


# The following was used for testing during development