c# webproxy - 一次大冒险？

发布于 2024-09-14 05:11:54 字数 986 浏览 7 评论 0原文

从昨天开始，我开始接触 .Net WebProxy 类，因为我认为 Web 代理的使用是开发具有 Web 访问的应用程序的一大陷阱（我的 Java 经验）。

所以我做了一个测试用例：

我使用了一个没有代理身份验证的鱿鱼代理，并在我的“ms Internet Explorer”中定义了代理设置，因为一个朋友告诉我，.net框架从Internet Explorer（一个大的.net）获取代理设置我认为的框架功能）。我的 C# 测试应用程序尝试下载 google，是的，它有效。

测试用例来源：

HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://www.google.com");
WebResponse Response = request.GetResponse();

Stream WebStream = Response.GetResponseStream();
StreamReader Reader = new StreamReader(WebStream);
string PageContent = Reader.ReadToEnd();

Console.WriteLine(PageContent);

Reader.Close();
WebStream.Close();
Response.Close();

好的，我尝试了下一步 - 我使用带有身份验证的鱿鱼代理。我只输入了 Internet Explorer 的代理 IP 和端口，而不输入凭据。然后我再次开始我的应用程序，霍莉狗屎 - 它也有效......但它怎么可能 - 我想。 .net框架的解决方案使用了旧的代理设置——无需身份验证的代理。

所以我的第一个问题是怎么会这样？ .net 框架如何知道它可以使用哪个代理？下一个任务是 - 我可以为我的应用程序使用“ms internet explorer”代理设置（带身份验证）吗？

感谢您的回答， Kangee

P.S.：我来自德国 - 我希望我的英语足以理解我的问题:-)

原文

since yersterday i play a little bit with the .Net WebProxy Class, because i think the usage of webproxys in one of the big traps in the development of applications with web access (my java experience).

So i made a test case:

i used a squid proxy without proxy authentication and defined the proxy settings in my "ms internet explorer" because a friend told my that the .net framework take the proxy setting from the internet explorer (a big .net framework feature i thought). my c# test application tried to download google and yes it works.

Testcase-Source:

HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://www.google.com");
WebResponse Response = request.GetResponse();

Stream WebStream = Response.GetResponseStream();
StreamReader Reader = new StreamReader(WebStream);
string PageContent = Reader.ReadToEnd();

Console.WriteLine(PageContent);

Reader.Close();
WebStream.Close();
Response.Close();

Ok i tried the next step - i used a squid proxy with authentication. I entered only the proxy-ip and port to the internet explorer and not the credentials. Then i start my application again and holly sh*t - it works too... but how can it be - i thought. The solution the .net framework used the old proxys settings - the proxy without authentication.

So my first question is how can it be? How does the .net frameworks knows which proxy it can use?
And the next quest is - can i used the "ms internet explorer"-proxy settings (with authentication) for my application?

Thanks for your answers,
Kangee

P.S.: I am from germany - i hope my english is good enough to understand my question :-)

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