public async ValueTask <IPEndPoint?> GetIpEndPointAsync(string hostNameOrIpAddress, int port, CancellationToken cancellationToken = default)
{
if (hostNameOrIpAddress == null)
{
throw new ArgumentNullException(nameof(hostNameOrIpAddress));
}
if (!IPAddress.TryParse(hostNameOrIpAddress, out IPAddress? ipAddress))
{
ipAddress = await _dnsResolver.GetIpAddressAsync(hostNameOrIpAddress, cancellationToken)
.ConfigureAwait(false);
}
if (ipAddress == null)
{
throw new InvalidArgumentException($"Cannot resolve DNS for {hostNameOrIpAddress}.");
}
return(new IPEndPoint(ipAddress, port));
}
