rpcPost method
Post json to the RPC address
Implementation
Future<String?> rpcPost(Map<String, dynamic> reqJson) async {
this.id++;
http.Response response =
await http.post(Uri.parse(rpcAddress), body: json.encode(reqJson));
if (response.statusCode != 200) {
return null; // TODO - make this an error response with more details
}
return response.body;
}