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Added callback to catch an error happening on the socket connection #29

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Added callback to catch an error happening on the socket connection #29

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a0d3ebd
Added callback to catch an error happening on the socket connection
ElegantCrab Apr 27, 2023
c7e4864
Request timeout added
ElegantCrab Apr 28, 2023
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14 changes: 9 additions & 5 deletions lib/modbus.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -95,9 +95,13 @@ ModbusClient createClient(TcpConnector connector, {int unitId = 1}) =>
ModbusClientImpl(connector, unitId);

ModbusClient createTcpClient(address,
{int port = 502,
ModbusMode mode = ModbusMode.rtu,
int unitId = 1,
Duration? timeout}) =>
{
int port = 502,
ModbusMode mode = ModbusMode.rtu,
int unitId = 1,
Duration? connectionTimeout,
Duration? requestTimeout,
Function(dynamic error, dynamic stackTrace)? onConnectionError
}) =>
ModbusClientImpl(
TcpConnector(address, port, mode, timeout: timeout), unitId);
TcpConnector(address, port, mode, timeout: connectionTimeout), unitId, onConnectionError: onConnectionError, requestTimeout: requestTimeout);
10 changes: 8 additions & 2 deletions lib/src/client.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -20,11 +20,15 @@ class ModbusClientImpl extends ModbusClient {
Map<PendingKey, PendingCallback> _pendingMap = HashMap();
Map<PendingKey, Completer> _waitingMap = HashMap();
Queue<Request> _waitingQueue = DoubleLinkedQueue();
Duration? _requestTimeout;
Function(dynamic error, dynamic stackTrace)? _onConnectionError;

ModbusClientImpl(this._connector, int unitId) {
ModbusClientImpl(this._connector, int unitId, { Function(dynamic error, dynamic stackTrace)? onConnectionError, Duration? requestTimeout = const Duration(milliseconds: 6000) }) {
_connector.onResponse = _onConnectorData;
_connector.onError = _onConnectorError;
_connector.onClose = _onConnectorClose;
_onConnectionError = onConnectionError;
_requestTimeout = requestTimeout;
_connector.setUnitId(unitId);
}

Expand Down Expand Up @@ -67,6 +71,7 @@ class ModbusClientImpl extends ModbusClient {
_pendingMap.clear();
_waitingMap.clear();
// _completer?.completeError(error, stackTrace);
if(_onConnectionError != null) _onConnectionError!(error, stackTrace);
throw ModbusConnectException("Connector Error: ${error}");
}

Expand Down Expand Up @@ -171,7 +176,8 @@ class ModbusClientImpl extends ModbusClient {
} else {
completer!.complete(responseData);
}
});
})
.timeout(_requestTimeout!);
}

@override
Expand Down