fix: better websocket reconnection (#470)

Author: firstof9

openevsehttp/__main__.py

@@ -231,8 +231,11 @@ async def test_and_get(self) -> dict:
 
     def ws_start(self) -> None:
         """Start the websocket listener."""
-        if self._ws_listening:
-            raise AlreadyListening
+        if self.websocket:
+            if self._ws_listening and self.websocket.state == "connected":
+                raise AlreadyListening
+            if self._ws_listening and self.websocket.state != "connected":
+                self._ws_listening = False
         self._start_listening()
 
     def _start_listening(self):

openevsehttp/websocket.py

@@ -38,7 +38,7 @@ def __init__(
         self._user = user
         self._password = password
         self.callback = callback
-        self._state = None
+        self._state = STATE_DISCONNECTED
         self.failed_attempts = 0
         self._error_reason = None
         self._client = None

tests/test_main.py

@@ -19,7 +19,11 @@
     UnsupportedFeature,
 )
 from tests.common import load_fixture
-from openevsehttp.websocket import SIGNAL_CONNECTION_STATE, STATE_CONNECTED
+from openevsehttp.websocket import (
+    SIGNAL_CONNECTION_STATE,
+    STATE_CONNECTED,
+    STATE_DISCONNECTED,
+)
 
 pytestmark = pytest.mark.asyncio
 
@@ -53,7 +57,7 @@ async def test_ws_state(test_charger):
     """Test v4 Status reply."""
     await test_charger.update()
     value = test_charger.ws_state
-    assert value == None
+    assert value == STATE_DISCONNECTED
     await test_charger.ws_disconnect()