When timeout is raised on HttpClient because of IP address issues, NoSuchMethodEror is thrown instead of SocketException

nosuchmethodonsetoption_test.dart

import 'dart:io';
import 'package:test/test.dart';
void main() {
    test("Login with HTTPClient",() async {
      try {
        //final String queryUrl = "http://google.com"; //OK
        // final String queryUrl = "http://googleKRIXKRAKSZ.com"; //SocketException is OK
        //
        // NoSuchMethodError: The method 'setOption' was called on null.
        // Receiver: null
        // Tried calling: setOption(Instance of 'SocketOption', true)
        final String queryUrl = "http://192.168.250.92:50001"; //Just use any nonresponding/invalid IP address
        final HttpClient client = HttpClient()..connectionTimeout = Duration(seconds: 5);
        //When the timeout duration it works great, we receive a SocketException: OS Error: Operation timed out
        //final HttpClient client = HttpClient()..connectionTimeout = Duration(minutes: 2);
        final HttpClientRequest request = await client.getUrl(Uri.parse(queryUrl));
        final HttpClientResponse response = await request.close();
        expect(response, isNotNull);
        expect(response.statusCode,200);
      } on SocketException catch(error) {
        print(error);
        expect(error is SocketException,isTrue);
      } on NoSuchMethodError catch(error,stackTrace) {
        print(error);
        print(stackTrace);
        expect(error is NoSuchMethodError,isFalse);
      } catch(error,stackTrace) {
        print("Huh, unexpected type of error");
        print(error);
        print(stackTrace);
        expect(error,isNull);
      }
    },timeout: Timeout(Duration(minutes: 3)));
}

This is a Dart test script to demonstrate the issue with the timeout exception of HttpClient.
This issue happens when the IP address is not valid, or the port is not listening. Normally, within 30 seconds or so a nice SocketException is thrown, but when we don't want to wait that long we set the timeout on the HTTP client of dart:io. Instead of the SocketException we have a NoSuchMethodError.