client.dart

 }).then((HttpResponse resp) {
        var json = '';
        if (resp.statusCode == 200) {
          resp.transform(UTF8.decoder) // use a UTF8.decoder
          .listen((String data) => json = json + data, // output the data
          onError: (error) => print("UNABLE TO CONNECT"), onDone:() {
            
            
          });
        }

     



    });