attempt auto-reconnect in HA

pyvantage/__init__.py

@@ -215,15 +215,18 @@ def _send_ascii_nl_locked(self, cmd, i):
  _LOGGER.info("Vantage #%s send_ascii_nl: %s", i, cmd)
  try:
  self._telnet[i].write(cmd.encode('ascii') + b'\r\n')
- except BrokenPipeError:
- _LOGGER.warning("Vantage BrokenPipeError - disconnected but retrying")
+ except BrokenPipeError as err:
+ _LOGGER.warning(f'Vantage BrokenPipeError - disconnected but retrying for "{cmd}", connection #{i}', exc_info=err)
  self._connected[i] = False
 
  def send_ascii_nl(self, cmd):
  """Sends the specified command to the vantage controller.
 
  Must not hold self._lock"""
  with self._lock:
+ if not self._connected[self._iconn]:
+ _LOGGER.info(f"attempting reconnecting for connection {self._iconn}")
+ self._connected[self._iconn] = self._do_login_locked(self._iconn)
  self._send_ascii_nl_locked(cmd, self._iconn)
  if not cmd.startswith("GET"):
  self._iconn = (self._iconn + 1) % self._num_connections