static void ProxyValidateCallback(IAsyncResult ar)
{
AsyncResult result = (AsyncResult)ar;
Func <string, int, string, bool> func = (Func <string, int, string, bool>)result.AsyncDelegate;
var isValid = func.EndInvoke(ar);
var proxyItems = (object[])ar.AsyncState;
string ip = (string)proxyItems[0];
int port = (int)proxyItems[1];
string proxySite = (string)proxyItems[2];
OnProxyValidated(ip, port, proxySite, isValid);
if (isValid)
{
ProxyCache.AddProxy(ip, port, proxySite);
}
}
public static void BeginCrawl()
{
ProxyCache.Clear();
ProxyCrawlResult.Clear();
_tmrGetProxy = new System.Threading.Timer(new TimerCallback(CrawlProxy), null, 0, 1000 * 60 * 30);
}
public static void RemoveProxy(WebProxy webProxy)
{
ProxyCache.RemoveProxy(webProxy.Address.Host, webProxy.Address.Port);
}
public static WebProxy GetRandomProxy()
{
return(ProxyCache.GetRandomProxy());
}