newBlockFilter method
New block filter Creates a filter in the node, to notify when a new block arrives. To check if the state has changed, call getFilterChanges. Returns a filter id.
Implementation
Future<int?> newBlockFilter() async {
final params = <String>[];
const method = EthereumRpcMethods.newBlockFilter;
final dynamic res = await _client.rpcClient.request(method, params);
if (res != null && res.containsKey(EthereumConstants.ethResultKey)) {
return EthereumUtilities.hexToInt(res[EthereumConstants.ethResultKey]);
}
_client.processError(method, res);
return null;
}