在HTTP请求头缺少基本的HTTP认证入口

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问题描述

我有以下的code：

WebClient client = new WebClient();
String un = "Username";
String pw = "Password";
client.Credentials =  new System.Net.NetworkCredential(un,pw);
client.DownloadFileCompleted +=
            new AsyncCompletedEventHandler(downloadFileCompleted);
client.DownloadFileAsync(new Uri(url), Config.LocalDir + @"\data\supportData.xml");

我收到以下的服务器上使用NetworkMonitor：

Using NetworkMonitor on the server I receive the following:

Http: Request, GET /audiClave/REST/en/actions
Command: GET
URI: /audiClave/REST/en/actions
ProtocolVersion: HTTP/1.1
Host:  210.xxx.xxx.xxx:8080
Connection:  Keep-Alive
HeaderEnd: CRLF

没有认证的条目。我缺少什么？

No Authentication entry. What am I missing?

推荐答案

尝试的老式方法：

string credentials = Convert.ToBase64String(Encoding.ASCII.GetBytes(un + ":" + pw));
client.Headers[HttpRequestHeader.Authorization] = "Basic " + credentials;

IIRC的WebClient没有，直到它得到来自服务器的挑战与401发送的授权请求报头。

IIRC WebClient doesn't send the Authorization request header until it gets a challenge from the server with 401.

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