public void OnProxyResult(ProxyCheckResult e)
{
lock (proxyDataGridLock)
{
if ((e.Proxy != null) && (e.Proxy.Address == null))
{
//No address value in the proxy means the request did not use a proxy
//thus it is a result from a connection test without a proxy.
string resultText = null;
if (e.Result)
{
resultText = TEST_SUCCESSFUL;
}
else
{
resultText = TEST_FAILED;
}
MessageBox.Show(resultText, "Test results");
}
else
{
Action <string, ListBox, Label> start = new Action <string, ListBox, Label>(this.AddProxyToList);
if (e.Result)
{
this.Invoke(start, e.AddressAndPort, WorkingProxyList, WorkingProxyListCountText);
}
else
{
this.Invoke(start, e.AddressAndPort, FailedProxyList, FailedProxyListCountText);
}
}
}
}
public static async Task <ProxyCheckResult> CheckProxyAsync(
WebProxy proxy,
string website,
int timeoutSecs)
{
using (HttpClientHandler clienthandler = new HttpClientHandler()
{
Proxy = proxy, UseProxy = true
}) {
using (HttpClient httpClient = new HttpClient(clienthandler)
{
Timeout = new TimeSpan(0, 0, timeoutSecs)
}) {
ProxyCheckResult result = ProxyCheckResult.UNKNOWN;
try {
HttpResponseMessage resp = await httpClient.GetAsync(website);
switch (resp.StatusCode)
{
case HttpStatusCode.OK:
result = ProxyCheckResult.OK;
break;
default:
result = ProxyCheckResult.UNKNOWN;
break;
}
}
catch (Exception ex) {
if (ex is TaskCanceledException || ex is HttpRequestException)
{
result = ProxyCheckResult.TIMED_OUT;
}
}
return(result);
}
}
}
public static async Task CheckProxiesAsync(
List <WebProxy> proxies,
string website,
int timeoutSecs,
IProgress <ProxyCheckProgressReport> progress,
CancellationToken cancellationToken)
{
int numTotal = proxies.Count;
int chunkSize = Math.Min(ChunkSize, proxies.Count);
foreach (List <WebProxy> splitProxies in ListExtensions.ChunkBy(proxies, chunkSize))
{
if (cancellationToken.IsCancellationRequested)
{
break;
}
List <Task> tasks = new List <Task>();
foreach (WebProxy proxy in splitProxies)
{
tasks.Add(Task.Run(async() => {
ProxyCheckResult result = await CheckProxyAsync(proxy, website, timeoutSecs);
progress.Report(new ProxyCheckProgressReport()
{
NumTotal = numTotal,
ProxyChecked = proxy,
ProxyCheckResult = result
});
}));
}
await Task.WhenAll(tasks);
}
}
