System.Net.WebClient古怪失败 [英] System.Net.WebClient fails weirdly

问题描述

我试图从假定的代码应该是不加入域的计算机上运行我们的TFS服务器。

的Reporting Services实例下载一些数据，我计算过，我会成立凭据自己。没有运气，得到了一个HTTP 401未授权回来。好了，我迷上了小提琴手，看看发生了什么事。

但是，这是当我 Heisenberged - 电话现在，经历了顺利。所以认证经过与小提琴手连接，但没有失败。在Web客户端断开或我思念的东西深刻在这里？

 私人无效ThisWorksWhenDomainJoined（）
 {
 WebClient的WC =新的WebClient（）; 
 wc.Credentials = CredentialCache.DefaultNetworkCredentials; 
 wc.DownloadString（HTTP：// teamfoundationserver /报告/ ........）; //作品
} 
 
私人无效ThisDoesntWork（）
 {
 WebClient的WC =新的WebClient（）; 
 wc.Credentials =新的NetworkCredential（用户名，密码，域）; 
 wc.DownloadString（HTTP：// teamfoundationserver /报告/ ........）; //炸毁王氏HTTP 401 
} 
  

解决方案

看看这个链接：结果
的 HTTP授权和.NET WebRequest的，Web客户端类

我有同样的问题，因为你。我只是加入一行，并开始工作。试试这个

 私人无效ThisDoesntWork（）
 {
 WebClient的WC =新的WebClient（）; 
 wc.Credentials =新的NetworkCredential（用户名，密码，域）; 
 //添加它开始工作的头后！ 
 wc.Headers.Add（HttpRequestHeader.UserAgent的Mozilla / 4.0（兼容; MSIE 6.0; Windows NT的5.1））; 
 wc.DownloadString（HTTP：// teamfoundationserver /报告/ ........）; //炸毁王氏HTTP 401 
} 
  

I am trying to download some data from the reporting services instance on our TFS server.
Given that the code should run on a computer that is not domain-joined, I figured that I would set the credentials myself. No luck, got a HTTP 401 Unauthorized back. Ok, so I hooked up Fiddler to see what was happening.

But that's when I got Heisenberged - the call now went through without a hitch. So the authentication goes through with Fiddler connected, but fails without it. Is the Webclient broken or am I missing something profound here?

private void ThisWorksWhenDomainJoined()
    {
        WebClient wc = new WebClient();
        wc.Credentials = CredentialCache.DefaultNetworkCredentials;
        wc.DownloadString("http://teamfoundationserver/reports/........");  //Works
    }

    private void ThisDoesntWork()
    {
        WebClient wc = new WebClient();
        wc.Credentials = new NetworkCredential("username", "password", "domain");
        wc.DownloadString("http://teamfoundationserver/reports/........");  //blows up wih HTTP 401
    }

解决方案

Take a look at this link:
HTTP Authorization and .NET WebRequest, WebClient Classes

I had the same problem as you. I have only added one line and it started to work. Try this

private void ThisDoesntWork()
    {
        WebClient wc = new WebClient();
        wc.Credentials = new NetworkCredential("username", "password", "domain");
        //After adding the headers it started to work !
        wc.Headers.Add(HttpRequestHeader.UserAgent, "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)");
        wc.DownloadString("http://teamfoundationserver/reports/........");  //blows up wih HTTP 401
    }

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