9
由於某些原因,我無法理解對某個特定網站(https://learningnetwork.cisco.com/people/mrollins?view=profile)的請求,從而產生響應流包含網站的主幹版本的請求響應對象。System.Net.HttpWebResponse.GetResponseStream()在WebException中返回截斷主體
流在65536字節後結束,等於2^16字節。我認爲這是一個可疑的數字。這些請求會抱怨內部服務器錯誤,這是我壓制的原因,因爲我已經驗證了webbrowser能夠理解此響應,並且完整的html包含在服務器的響應中。 (使用fiddler)
我發現以前記錄here的問題,這是不能令人滿意的,原因很簡單,它在這張票據結束:
「我想我得希望錯誤 不超過65536個字符...「
那好吧。
解決方法讚賞,或者如果有人知道一個upcomming修復也是好的。
using System;
using System.IO;
using System.Net;
using System.Web.UI;
namespace Example
{
public partial class _Default : Page
{
protected void Page_Load(object senderHidden, EventArgs eHidden)
{
//ServicePointManager.ServerCertificateValidationCallback += delegate(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors) { return true; };
var cookieContainer = new CookieContainer();
//Encoding enc = Encoding.UTF8;
HttpWebRequest req = (HttpWebRequest)WebRequest.Create("https://learningnetwork.cisco.com/people/mrollins?view=profile");
req.AllowAutoRedirect = false;
req.AutomaticDecompression = DecompressionMethods.Deflate | DecompressionMethods.GZip;
req.CookieContainer = cookieContainer;
req.Accept = "text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";
req.Method = "GET";
req.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; ru; rv:1.8.1.12) Gecko/20080201 Firefox/2.0.0.12";
req.KeepAlive = true;
HttpWebResponse resp = null;
try
{
resp = (HttpWebResponse)req.GetResponse();
}
catch (WebException e)
{
var r = e.Response as HttpWebResponse;
var memstream = Read(r.GetResponseStream());
var wrongLength = memstream.Length;
}
}
public static MemoryStream Read(Stream stream)
{
MemoryStream memStream = new MemoryStream();
byte[] readBuffer = new byte[4096];
int bytesRead;
while ((bytesRead = stream.Read(readBuffer, 0, readBuffer.Length)) > 0)
memStream.Write(readBuffer, 0, bytesRead);
return memStream;
}
}
}
我應該包括一些關於代碼的評論。這是一個簡單的程序,我已經能夠做出,這仍然表明了問題。要查看問題,請在catch子句末尾放置一個斷點,並觀察只讀取了2^16個字節。 (錯誤長度= 65536) – Tor 2011-02-07 09:23:43