Printer not printing with original code

[srochacito]

I tried your example running in windows:

Future imprime() async {
final PaperSize paper = PaperSize.mm80;
final profile = await CapabilityProfile.load();
final printer = NetworkPrinter(paper, profile);

final PosPrintResult res = await printer.connect('10.0.0.168', port: 9100);

if (res == PosPrintResult.success) {
  testReceipt(printer);

  printer.disconnect();
}

print('Print result: ${res.msg}');

return res.msg;

}

I get a "success" message but nothing is printed.

I then used this code, and it worked:

void printTicketViaLan(List bytes) async {
Duration timeout = const Duration(seconds: 5);
var result = await Socket.connect('10.0.0.168', 9100, timeout: timeout)
.then((Socket socket) {
socket.add(bytes);
socket.destroy();
return 'Data sent Success';
}).catchError((dynamic e) {
return 'Error sending Data';
});
debugPrint(result);
}

I really don't understand what is happening.

Could you advice.