c# – 如何在ASP.NET Core 2.1中获取客户端IP地址

我正在使用Microsoft Visual Studio 2017提供的Angular模板开发ASP.Net Core 2.1.我的客户端应用程序工作正常.在用户身份验证的竞争之后,我想启动用户会话管理,其中我存储客户端用户IP地址.我已经在互联网上搜索过这个,但到目前为止还没有找到任何解决方案.

以下是我访问过的一些参考链接：

How do I get client IP address in ASP.NET CORE?

Get Client IP Address in ASP.NET Core 2.0

Get a user remote IP Address in ASP.Net Core

在我的ValuesController.cs中,我也试过下面的代码：

private IHttpContextAccessor _accessor;

public ValuesController(IHttpContextAccessor accessor)
{
    _accessor = accessor;
}

public IEnumerable<string> Get()
{
    var ip = Request.HttpContext.Connection.RemoteIpAddress.ToString();
    return new string[] { ip,"value2" };
}

其中ip变量我得到空值并得到此错误

Request.HttpContext.Connection.RemoteIpAddress.Address threw an exception of Type ‘System.Net.Sockets.SocketException’

你能告诉我如何在ASP.NET Core 2.1中获取客户端IP地址吗？

public void ConfigureServices(IServiceCollection services)
{
    services.AddSingleton<IHttpContextAccessor,HttpContextAccessor>();
}

private IHttpContextAccessor _accessor;

public ValuesController(IHttpContextAccessor accessor)
{
    _accessor = accessor;
}

public IEnumerable<string> Get()
{
    var ip = _accessor.HttpContext?.Connection?.RemoteIpAddress?.ToString();
    return new string[] { ip,"value2" };
}