public async Task ReturnAsync(ProxyEntry proxy, HttpStatusCode statusCode)
{
if (proxy == null)
{
return;
}
if (_dict.TryGetValue(proxy.Uri, out var p))
{
if (statusCode.IsSuccessStatusCode())
{
p.FailedNum = 0;
}
else
{
p.FailedNum += 1;
}
if (p.FailedNum > 6)
{
_dict.TryRemove(p.Uri, out _);
return;
}
if (_proxyValidator != null && p.FailedNum % 3 == 0 && await _proxyValidator.IsAvailable(proxy))
{
_dict.TryRemove(p.Uri, out _);
return;
}
_queue.TryDequeue(out p);
}
}
public async Task <bool> IsAvailable(ProxyEntry proxy)
{
if (proxy == null)
{
return(false);
}
var httpClient = _httpClientFactory.CreateClient($"PROXY_{proxy.Uri}");
httpClient.Timeout = new TimeSpan(0, 0, 3);
try
{
var msg = new HttpRequestMessage(HttpMethod.Head, _options.ProxyTestUrl);
var response = await httpClient.SendAsync(msg);
return(response.IsSuccessStatusCode);
}
catch (Exception)
{
_logger.LogWarning($"Proxy {proxy.Uri} is not available");
return(false);
}
}
public ReturnProxyTask(IProxyService pool, ProxyEntry httpProxy)
{
_pool = pool;
_httpProxy = httpProxy;
}