Extend System.Net.WebClient to allow for the configuration of Timeout and ConnectionLimit.

public class ConfigurableWebClient : WebClient
{
public int? Timeout { get; set; }
public int? ConnectionLimit { get; set; }

protected override WebRequest GetWebRequest(Uri address)
{
var baseRequest = base.GetWebRequest(address);
var webRequest = baseRequest as HttpWebRequest;
if (webRequest == null)
return baseRequest;

if (Timeout.HasValue)
webRequest.Timeout = Timeout.Value;

if (ConnectionLimit.HasValue)
webRequest.ServicePoint.ConnectionLimit = ConnectionLimit.Value;

return webRequest;
}
}