HttpListenerContext.User 属性

定义

命名空间:

System.Net

程序集:

System.Net.HttpListener.dll

Source:

HttpListenerContext.cs

获取用于为客户端获取标识、身份验证信息和安全角色的对象，该客户端的请求由此 HttpListenerContext 对象表示。

public:
 property System::Security::Principal::IPrincipal ^ User { System::Security::Principal::IPrincipal ^ get(); };

public System.Security.Principal.IPrincipal? User { get; }

member this.User : System.Security.Principal.IPrincipal

Public ReadOnly Property User As IPrincipal

属性值

IPrincipal

描述客户端的 IPrincipal 对象，或者，如果提供此 HttpListener 的 HttpListenerContext 不需要身份验证，则为 null。

示例

下面的代码示例演示如何访问有关客户端的标识和身份验证信息，并在响应中将其返回到客户端。

public static string ClientInformation(HttpListenerContext context)
{
    System.Security.Principal.IPrincipal user = context.User;
    System.Security.Principal.IIdentity id = user.Identity;
    if (id == null)
    {
        return "Client authentication is not enabled for this Web server.";
    }

    string display;
    if (id.IsAuthenticated)
    {
        display = String.Format("{0} was authenticated using {1}", id.Name,
            id.AuthenticationType);
    }
    else
    {
       display = String.Format("{0} was not authenticated", id.Name);
    }
    return display;
}

Public Shared Function ClientInformation(ByVal context As HttpListenerContext) As String
    Dim user As System.Security.Principal.IPrincipal = context.User
    Dim id As System.Security.Principal.IIdentity = user.Identity

    If id Is Nothing Then
        Return "Client authentication is not enabled for this Web server."
    End If

    Dim display As String

    If id.IsAuthenticated Then
        display = String.Format("{0} was authenticated using {1}", id.Name, id.AuthenticationType)
    Else
        display = String.Format("{0} was not authenticated", id.Name)
    End If

    Return display
End Function

注解

指示 HttpListener 它需要使用 AuthenticationSchemes 属性或通过使用 属性指定 AuthenticationSchemeSelector 委托 AuthenticationSchemeSelectorDelegate 进行身份验证。

若要确定客户端的登录名和身份验证信息，检查IPrincipal.Identity此属性返回的 对象中的 属性。