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[英]How to use IE proxy server settings and its credentials in .Net Application
[英]How to AutoDetect/Use IE proxy settings in .net HttpWebRequest
是否可以检测/重用这些设置?
如何 ?
我得到的例外是这是连接到http://www.google.com 时的例外
System.Net.WebException: Unable to connect to the remote server --->
System.Net.Sockets.SocketException: A connection attempt failed because the
connected party did not properly respond after a period of time, or established
connection failed because connected host has failed to respond 66.102.1.99:80
at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot,
SocketAddress socketAddress)
at System.Net.Sockets.Socket.InternalConnect(EndPoint remoteEP)
at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure,
Socket s4, Socket s6, Socket& socket, IPAddress& address,
ConnectSocketState state, IAsyncResult asyncResult, Int32 timeout,
Exception& exception)
--- End of inner exception stack trace ---
at System.Net.HttpWebRequest.GetResponse()
at mvcTest.MvcApplication.Application_Start() in
C:\\home\\test\\Application1\\Application1\\Program.cs:line 33"
默认情况下,HttpWebRequest 将实际使用 IE 代理设置。
如果你不想使用它们,你必须明确覆盖.Proxy proprty为null(无代理),或者你选择的代理设置。
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://news.bbc.co.uk");
//request.Proxy = null; // uncomment this to bypass the default (IE) proxy settings
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Console.WriteLine("Done - press return");
Console.ReadLine();
我遇到了一个非常相似的情况,默认情况下 HttpWebRequest 没有选择正确的代理详细信息,并且设置 UseDefaultCredentials 也不起作用。 然而,在代码中强制设置是一种享受:
IWebProxy proxy = myWebRequest.Proxy;
if (proxy != null) {
string proxyuri = proxy.GetProxy(myWebRequest.RequestUri).ToString();
myWebRequest.UseDefaultCredentials = true;
myWebRequest.Proxy = new WebProxy(proxyuri, false);
myWebRequest.Proxy.Credentials = System.Net.CredentialCache.DefaultCredentials;
}
并且由于它使用默认凭据,因此不应询问用户的详细信息。
请注意,这是我在此处针对一个非常相似的问题发布的答案的副本: C# 中的代理基本身份验证:HTTP 407 错误
对于在使用 ISA 服务器时遇到问题的人,您可以尝试按以下方式设置代理:
IWebProxy webProxy = WebRequest.DefaultWebProxy;
webProxy.Credentials = CredentialCache.DefaultNetworkCredentials;
myRequest.Proxy = webProxy;
如果未明确设置WebRequest.DefaultWebProxy
(默认设置为WebRequest.DefaultWebProxy
),则默认情况下会发生这种情况。
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