[overlays] Reduce socket abnormal closure to warning

resolves TWITCH-BOT-A

Signed-off-by: Knut Ahlers <knut@ahlers.me>

internal/apimodules/overlays/overlays.go

@@ -405,12 +405,21 @@ func handleSocketSubscription(w http.ResponseWriter, r *http.Request) {
 			case err == nil:
 				// We use nil-error to close the connection
 
-			case errors.As(err, &cErr) && websocket.IsCloseError(cErr, websocket.CloseNormalClosure, websocket.CloseGoingAway):
+			case errors.As(err, &cErr):
+				switch cErr.Code {
+				case websocket.CloseAbnormalClosure:
+					logger.WithError(err).Warn("overlay websocket was closed abnormally")
+
+				case websocket.CloseNormalClosure, websocket.CloseGoingAway:
 					// We don't need to log when the remote closes the websocket gracefully
 
 				default:
 					logger.WithError(err).Error("message processing caused error")
 				}
+
+			default:
+				logger.WithError(err).Error("message processing caused error")
+			}
 			return // All errors need to quit this function
 
 		case msg := <-sendMsgC:

pkg/twitch/eventsubWebsocketClient.go

@@ -385,6 +385,10 @@ func (e *EventSubSocketClient) handleSocketError(err error, msgC chan eventSubSo
 			e.logger.Debug("websocket was closed normally")
 			return nil
 
+		case websocket.CloseAbnormalClosure:
+			e.logger.Warn("websocket reported abnormal closure")
+			return errors.Wrap(e.connect(e.socketDest, msgC, errC, "network-error"), "re-connecting after abnormal closure")
+
 		default:
 			// Some non-twitch close code we did not expect
 			e.logger.WithError(closeErr).Error("websocket reported unexpected error code")