How to send big text data from tcp socket to Flutter app? - sockets

Question

I have a 3000 rows and 20 column data most cell has 50 or 80 character long text. I test using aqueduct and Dart Server to see which one is better intermediate option in between server data and Flutter communication.
I use 2 option for the test. All I can test is that for (var data in _socket) runs about 10 or 12 times to receive whole data. On the other hand _socket.liste lost much of the data.
In both I even use await Future.delayed(Duration(seconds: 7))...
And result was same. In short data they're both very fast. but for big data I am having problem to get correct result.
How to send big text data from tcp socket to Flutter app?
// OPTION 1
_socket.listen((List<int> data) {
String _reply = new String.fromCharCodes(data).trim();
_reply = "$_reply$_tmpValue";
});
// OPTION 2
await for (var data in _socket) {
String _reply = new String.fromCharCodes(data).trim();
_reply = "$_reply$_tmpValue";
}
UPDATE:
final Socket client = await Socket.connect('192.168.22.120', 3000);
client.add(utf8.encode('$_requestedData\r\n'));
client.listen(
(var data) {
var ints = new Uint8List.fromList(data).buffer.asInt64List();
ints.forEach((i) => print('Got $i'));
},
onDone: () { print('Done'); client.close(); },
onError: (e) { print('Got error $e'); client.close(); });
print('main done');
RESULT
main done
_reply:
Got 4206144564389427761
Got 6861850004482897203
Got 2368148215793798714
UPDATE (Working Solution):
_socket = await Socket.connect('127.0.0.1’, 3000);
_socket.write(_myQuery);
await for (var data in _socket) {
_reply = new String.fromCharCodes(data);
_rawValue = _rawValue + _reply;
int dataLen;
dataLen = _reply.length;
int carriageReturnPosition;
carriageReturnPosition = dataLen - 2;
int newLinePosition;
newLinePosition = dataLen - 1;
// In my scenario it loops 32 times and it takes about 145 seconds to get big data
if (_reply.substring(carriageReturnPosition, newLinePosition) == '\r' &&
_reply.substring(newLinePosition, dataLen) == '\n') {
await _socket.close();
_returnData = _reply;
}
}