Question

我的代码是否有任何建议。我不知道为什么表现不佳。我的代码大约需要200毫秒而浏览器只需50毫秒，如下所示：

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(new Uri(url));
request.Proxy = null;
request.Method = "GET";
request.Accept = "image/jpeg, application/x-ms-application, image/gif, application/xaml+xml, image/pjpeg, application/x-ms-xbap, */*";
request.Headers.Add("Accept-Language", "zh-CN");
request.UserAgent = "Mozilla/5.0 (Windows NT 5.2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.154 Safari/537.36";

request.Headers.Add("Accept-Encoding", "gzip, deflate");
request.KeepAlive = true;
request.AllowAutoRedirect = false;        
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
string str;
Stream st = response .GetResponseStream();
if (response .ContentEncoding.ToLower().Contains("gzip"))
{
    st = new GZipStream(st, CompressionMode.Decompress);
}
StreamReader reader = new StreamReader(st);
str = reader.ReadToEnd();
reader.Close();
response.Close();

Answer 1

为什么要手动处理解压缩？只需使用

request.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;

它还会添加accept-encoding标题，并在清除浏览器缓存后再次检查。

HttpWebRequest（200ms）比浏览器慢4倍（50ms）

1 个答案: