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获取状态代码401的响应内容

http-status-code-401 httpwebresponse httpwebrequest c#

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0fnt · 技术社区 · 15 年前

我正在尝试建立一个到服务器的连接,该服务器为我的所有请求以及正常的HTML响应发送401身份验证错误。例如但是,我还想读取随附的HTML响应,以便分析它。使用livehttpheaders捕获的头交换示例: 显然,内容长度不是零。火狐显示它是javascript。

https://172.31.1.251:1003/fgtauth?73e285357b2dc5cc
Request:
GET /fgtauth?73e285357b2dc5cc HTTP/1.1
Host: 172.31.1.251:1003
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1b4) Gecko/20090423 Firefox/3.5b4 (.NET CLR 3.5.30729)
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive

Response:
HTTP/1.x 401 Unauthorized
WWW-Authenticate: Fortigate
Content-Length: 1091
Connection: Keep-Alive
Cache-Control: no-cache
Content-Type: text/html

此时,Firefox中会打开一个表单,要求我输入用户名和密码。

https://172.31.1.251:1003/

Request:
POST / HTTP/1.1
Host: 172.31.1.251:1003
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1b4) Gecko/20090423 Firefox/3.5b4 (.NET CLR 3.5.30729)
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer: https://172.31.1.251:1003/
Content-Type: application/x-www-form-urlencoded
Content-Length: 93
magic=73e285357b2dc5cc&username=uuxx&password=xxuu&4Tredir=http%3A%2F%2Fwww.google.com%2F


Response:
HTTP/1.x 401 Unauthorized
WWW-Authenticate: Fortigate
Content-Length: 924
Connection: Keep-Alive
Cache-Control: no-cache
Content-Type: text/html

此时,我被重定向到另一个URL。然而,我所面临的问题是如何获得与401一起未经授权发送的lengt924的内容,因为该内容将帮助我进一步做我想做的事情。但最重要的是:

WebResponse loginResponse = loginRequest.GetResponse();

引发异常。

如果有任何建议能帮助我了解实际内容,我将不胜感激。

谢谢。

1 回复 | 直到 15 年前

1

4

SLaks 15 年前

你需要阅读 WebException 的 Response 属性,如下所示:

WebResponse loginResponse;
try {
    loginResponse = loginRequest.GetResponse();
} catch(WebException ex) {
    if (ex.Status == WebExceptionStatus.ProtocolError) {
        loginResponse = ex.Response;
    } else
        throw;
}

//Do something with the response, and remember to dispose it.