diff --git a/cyberwow/lib/logic/interface/rpc/rpc.dart b/cyberwow/lib/logic/interface/rpc/rpc.dart
new file mode 100644
index 0000000..741417d
--- /dev/null
+++ b/cyberwow/lib/logic/interface/rpc/rpc.dart
@@ -0,0 +1,79 @@
+/*
+
+Copyright 2019 fuwa
+
+This file is part of CyberWOW.
+
+CyberWOW is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+CyberWOW is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with CyberWOW.  If not, see <https://www.gnu.org/licenses/>.
+
+*/
+
+import 'dart:async';
+import 'dart:convert';
+
+import 'package:http/http.dart' as http;
+import 'package:flutter/foundation.dart';
+
+import '../../../config.dart' as config;
+import '../../../helper.dart';
+import '../../../logging.dart';
+
+Future<http.Response> rpcHTTP(final String method) async {
+  final url = 'http://${config.host}:${config.c.port}/json_rpc';
+
+  final body = json.encode
+  (
+    {
+      'jsonrpc': '2.0',
+      'method': method,
+    }
+  );
+
+  try {
+    final response = await http.post
+    ( url,
+      body: body
+    );
+    return response;
+  }
+  catch (e) {
+    log.warning(e);
+    return null;
+  }
+}
+
+dynamic jsonDecode(final String responseBody) => json.decode(responseBody);
+
+Future<dynamic> rpc(final String method, {final String field}) async {
+  final response = await rpcHTTP(method);
+
+  if (response == null) return null;
+
+  if (response.statusCode != 200) {
+    return null;
+  } else {
+    final _body = await compute(jsonDecode, response.body);
+    final _result = _body['result'];
+    if (_result == null) return null;
+
+    final _field = field == null ? _result : _result[field];
+
+    return _field;
+  }
+}
+
+Future<String> rpcString(final String method, {final String field}) async {
+  final _field = await rpc(method, field: field);
+  return pretty(_field);
+}
diff --git a/cyberwow/lib/logic/interface/rpc/rpc2.dart b/cyberwow/lib/logic/interface/rpc/rpc2.dart
new file mode 100644
index 0000000..58c28d4
--- /dev/null
+++ b/cyberwow/lib/logic/interface/rpc/rpc2.dart
@@ -0,0 +1,64 @@
+/*
+
+Copyright 2019 fuwa
+
+This file is part of CyberWOW.
+
+CyberWOW is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+CyberWOW is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with CyberWOW.  If not, see <https://www.gnu.org/licenses/>.
+
+*/
+
+import 'dart:async';
+import 'dart:convert';
+import 'dart:math';
+
+import 'package:http/http.dart' as http;
+import 'package:flutter/foundation.dart';
+import 'package:intl/intl.dart';
+
+import '../../../config.dart' as config;
+import '../../../helper.dart';
+import '../../../logging.dart';
+
+Future<http.Response> rpc2(final String method) async {
+  final url = 'http://${config.host}:${config.c.port}/${method}';
+
+  try {
+    final response = await http.post
+    ( url,
+    );
+    return response;
+  }
+  catch (e) {
+    log.warning(e);
+    return null;
+  }
+}
+
+dynamic jsonDecode(final String responseBody) => json.decode(responseBody);
+
+Future<String> rpc2String(final String method, {final String field}) async {
+  final response = await rpc2(method);
+
+  if (response == null) return '';
+
+  if (response.statusCode != 200) {
+    return '';
+  } else {
+    final _body = await compute(jsonDecode, response.body);
+    final _field = field == null ? _body: _body[field];
+
+    return pretty(_field);
+  }
+}
diff --git a/cyberwow/lib/logic/sensor/rpc/rpc.dart b/cyberwow/lib/logic/sensor/rpc/rpc.dart
index 40f721a..c806768 100644
--- a/cyberwow/lib/logic/sensor/rpc/rpc.dart
+++ b/cyberwow/lib/logic/sensor/rpc/rpc.dart
@@ -23,65 +23,10 @@ import 'dart:async';
 import 'dart:convert';
 
 import 'package:http/http.dart' as http;
-import 'package:flutter/foundation.dart';
 
-import '../../../config.dart' as config;
 import '../../../helper.dart';
 import '../../../logging.dart';
-
-int rpcID = 0;
-
-Future<http.Response> rpcHTTP(final String method) async {
-  final url = 'http://${config.host}:${config.c.port}/json_rpc';
-
-  rpcID += 1;
-
-  final body = json.encode
-  (
-    {
-      'jsonrpc': '2.0',
-      'id': rpcID.toString(),
-      'method': method,
-    }
-  );
-
-  try {
-    final response = await http.post
-    ( url,
-      body: body
-    );
-    return response;
-  }
-  catch (e) {
-    log.warning(e);
-    return null;
-  }
-}
-
-dynamic jsonDecode(final String responseBody) => json.decode(responseBody);
-
-Future<dynamic> rpc(final String method, {final String field}) async {
-  final response = await rpcHTTP(method);
-
-  if (response == null) return null;
-
-  if (response.statusCode != 200) {
-    return null;
-  } else {
-    final _body = await compute(jsonDecode, response.body);
-    final _result = _body['result'];
-    if (_result == null) return null;
-
-    final _field = field == null ? _result : _result[field];
-
-    return _field;
-  }
-}
-
-Future<String> rpcString(final String method, {final String field}) async {
-  final _field = await rpc(method, field: field);
-  return pretty(_field);
-}
+import '../../interface/rpc/rpc.dart';
 
 Future<http.Response> syncInfo() => rpc('sync_info');
 Future<String> syncInfoString() => rpcString('sync_info');
diff --git a/cyberwow/lib/logic/sensor/rpc/rpc2.dart b/cyberwow/lib/logic/sensor/rpc/rpc2.dart
index ee920d4..59cfd23 100644
--- a/cyberwow/lib/logic/sensor/rpc/rpc2.dart
+++ b/cyberwow/lib/logic/sensor/rpc/rpc2.dart
@@ -25,45 +25,12 @@ import 'dart:math';
 
 import 'package:http/http.dart' as http;
 import 'package:flutter/foundation.dart';
-import 'package:intl/intl.dart';
 
-import '../../../config.dart' as config;
 import '../../../helper.dart';
 import '../../../logging.dart';
+import '../../interface/rpc/rpc2.dart' as rpc2;
 
-Future<http.Response> rpc2(final String method) async {
-  final url = 'http://${config.host}:${config.c.port}/${method}';
-
-  try {
-    final response = await http.post
-    ( url,
-    );
-    return response;
-  }
-  catch (e) {
-    log.warning(e);
-    return null;
-  }
-}
-
-dynamic jsonDecode(final String responseBody) => json.decode(responseBody);
-
-Future<String> rpc2String(final String method, {final String field}) async {
-  final response = await rpc2(method);
-
-  if (response == null) return '';
-
-  if (response.statusCode != 200) {
-    return '';
-  } else {
-    final _body = await compute(jsonDecode, response.body);
-    final _field = field == null ? _body: _body[field];
-
-    return pretty(_field);
-  }
-}
-
-Future<http.Response> getTransactionPool() async => rpc2('get_transaction_pool');
+Future<http.Response> getTransactionPool() async => rpc2.rpc2('get_transaction_pool');
 
 Future<List<Map<String, dynamic>>> getTransactionPoolSimple() async {
   final response = await getTransactionPool();