import 'dart:convert'; import 'package:http/http.dart' as http; Future getTurnCredential(String host, int port) async { var url = 'https://$host:$port/api/turn?service=turn&username=flutter-webrtc'; final res = await http.get(Uri.parse(url)); if (res.statusCode == 200) { var data = json.decode(res.body); print('getTurnCredential:response => $data.'); return data; } return {}; }