internal static async Task <Stream> DownloadToStream(string url)
{
//Log.Info("要保存为流的文件路径: " + url);
url = url.ToLower();
var uri = new Uri(url);
var host = uri.GetLeftPart(UriPartial.Authority);
string requestUrl = host.EndsWith("/") ? url.Substring(host.Length) : url.Substring(host.Length + 1);
var client = HttpClientContext.GetOrAddClient(host);
//var content = await client.GetStreamAsync(requestUrl);
var res = await client.GetAsync(requestUrl);
if (res.IsSuccessStatusCode)
{
var content = await res.Content.ReadAsStreamAsync();
var ms = new MemoryStream();
await content.CopyToAsync(ms);
//Log.Info("文件长度：" + ms.Length);
ms.Position = 0;
return(ms);
}
Log.Warn("要保存为流的文件不存在: " + url);
return(null);
}
