Question

我有一个包含WebBrowser控件的Windows窗体应用程序。想法是让WebBrowser在没有用户互动的情况下浏览网站。 WebBrowser通过代理访问互联网。

我可以在代理上看到请求，但是由于代理身份验证失败，它们被拒绝了。

我添加了Proxy-Authorization: Basic标题。这适用于普通的http页面，但它似乎不起作用https：

var credentialStringValue = "proxyUser:proxyPassword";
byte[] credentialByteArray = ASCIIEncoding.ASCII.GetBytes(credentialStringValue);
var credentialBase64String = Convert.ToBase64String(credentialByteArray);

string Headers = string.Format("Proxy-Authorization: Basic {0}{1}", credentialBase64String, Environment.NewLine);

ws.Navigate(url,TargetFrameName,PostData,Headers);

ws等于new WebBrowser()的位置。凭据是正确的，因为它在我手动执行时有效。

我是否可以以编程方式验证代理凭据？

Answer 1

 // do what you want with proxy class
WebProxy webProxy = new WebProxy(host, port)
{
    Credentials = ...
}

HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create("http://example.com");
webRequest.Proxy = webProxy;

HttpWebResponse response = (HttpWebResponse)webRequest.GetResponse();
Stream receiveStream = response.GetResponseStream();

WebBrowser webBrowser = new WebBrowser();
webBrowser.DocumentStream = receiveStream;

Answer 2

这些都不会起作用。由于Windows安全功能，它将始终弹出用户名和密码对话框。首先必须将凭据存储在Windows凭据中。您需要做的第一件事是通过NuGet包管理器下载CredentialManagement包。首先必须使用用户名和密码将代理信息存储在注册表中。这是注册表的代码

[DllImport("wininet.dll", SetLastError = true)]
        public static extern bool InternetSetOption(IntPtr hInternet, int dwOption, IntPtr lpBuffer, int dwBufferLength);
        public const int INTERNET_OPTION_SETTINGS_CHANGED = 39;
        public const int INTERNET_OPTION_REFRESH = 37;

 static void setProxyRegistry(string proxyhost, bool proxyEnabled, string username, string password)
        {
            const string userRoot = "HKEY_CURRENT_USER";
            const string subkey = "Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings";
            const string keyName = userRoot + "\\" + subkey;

            Registry.SetValue(keyName, "ProxyServer", proxyhost, RegistryValueKind.String);
            Registry.SetValue(keyName, "ProxyEnable", proxyEnabled ? "1" : "0", RegistryValueKind.DWord);

            Registry.SetValue(keyName, "ProxyPass", password, RegistryValueKind.String);
            Registry.SetValue(keyName, "ProxyUser", username, RegistryValueKind.String);

            //<-loopback>;<local>
            Registry.SetValue(keyName, "ProxyOverride", "*.local", RegistryValueKind.String);


            // These lines implement the Interface in the beginning of program 
            // They cause the OS to refresh the settings, causing IP to realy update
            InternetSetOption(IntPtr.Zero, INTERNET_OPTION_SETTINGS_CHANGED, IntPtr.Zero, 0);
            InternetSetOption(IntPtr.Zero, INTERNET_OPTION_REFRESH, IntPtr.Zero, 0);
        }

然后你需要设置凭证

 Credential credentials= new Credential
            {
                Username = "Usernmae",
                Password = "Password",
                Target = "Target (usualy proxy domain)",
                Type = CredentialType.Generic,
                PersistanceType = PersistanceType.Enterprise
            };
            credentials.Save();

我在.NET 4.5.2中使用它

Answer 3

这里有一个解决方案：

http://www.journeyintocode.com/2013/08/c-webbrowser-control-proxy.html

它使用winnet.dll以及WebBrowser类上的几个界面，包括IAuthenticate。

我还没能尝试，但看起来很有希望。

WebBrowser控件具有自动代理登录功能

3 个答案: