public HttpClientEntry GetHttpClient(string hash)
{
if (string.IsNullOrWhiteSpace(hash))
{
hash = string.Empty;
}
_getHttpClientCount.Inc();
if (_getHttpClientCount.Value % 100 == 0)
{
CleanupPool();
}
if (_pool.ContainsKey(hash))
{
_pool[hash].ActiveTime = DateTime.Now;
return(_pool[hash]);
}
else
{
var item = new HttpClientEntry();
_pool.Add(hash, item);
return(item);
}
}
private void CleanupPool()
{
List <string> needRemoveEntries = new List <string>();
var now = DateTime.Now;
foreach (var pair in _pool)
{
if ((now - pair.Value.ActiveTime).TotalSeconds > 240)
{
needRemoveEntries.Add(pair.Key);
}
}
foreach (var key in needRemoveEntries)
{
HttpClientEntry item = _pool[key];
if (_pool.Remove(key))
{
item.Client.Dispose();
}
}
}