private static List CheckFqdn()

in toolkit/Toolkit/SqlManagedInstanceToolkit.cs [80:135]
46 lines of code
7 McCabe index (conditional complexity)

    private static List<string> CheckFqdn(string fqdn, out string ipAddress)
    {
        ipAddress = null;
        List<string> result = new List<string>();

        // Resolve fqdn
        //
        try
        {
            int cnt = 0;
            string addresses = string.Empty;
            IPHostEntry destination = Dns.GetHostEntry(fqdn);

            foreach (var addr in destination.AddressList)
            {
                addresses += addr + ";";

                if (cnt++ == 0)
                {
                    ipAddress = addr.ToString();
                }
            }

            result.Add(string.Format("Hostname {0} was successfully resolved to: {1}.", fqdn, addresses));
        }
        catch (SocketException se)
        {
            if (se.ErrorCode == 11001)
            {
                result.Add(string.Format("Hostname {0} could not be found", fqdn));
            }
            else
            {
                result.Add(string.Format("DNS resolution of {0} thrown following error {1}.", fqdn, se.ErrorCode));
            }
        }
        catch (Exception ex)
        {
            result.Add(string.Format("DNS resolution of {0} thrown following exc {1}.", fqdn, ex.Message));
        }

        // Check TCP ping
        //
        Ping ping = new Ping();
        try
        {
            PingReply reply = ping.Send(fqdn);
            result.Add(string.Format("PING to {0} reported status {1}.", fqdn, reply.Status));
        }
        catch (Exception ex)
        {
            result.Add(string.Format("PING to {0} thrown following exc {1}.", fqdn, ex.Message));
        }

        return result;
    }