您可以使用IHttpConnectionFeature来获取此信息。

var remoteIpAddress = httpContext.GetFeature<IHttpConnectionFeature>()?.RemoteIpAddress;

运行ASP。在Ubuntu上的Traefik反向代理后面的NET Core 2.1，我需要在安装官方的Microsoft.AspNetCore.HttpOverrides包后在knownproxy中设置它的网关IP

        var forwardedOptions = new ForwardedHeadersOptions {
            ForwardedHeaders = ForwardedHeaders.XForwardedFor,
        };
        forwardedOptions.KnownProxies.Add(IPAddress.Parse("192.168.3.1"));
        app.UseForwardedHeaders(forwardedOptions);

根据文档，如果反向代理没有在本地主机上运行，这是必需的。docker-compose。Traefik . yml已分配静态IP地址:

networks:
  my-docker-network:
    ipv4_address: 192.168.3.2

或者，它应该足以确保在这里定义了一个已知的网络，并在. net Core中指定其网关。

在ASP。NET 2.1，在StartUp.cs中添加此服务:

services.AddHttpContextAccessor();
services.TryAddSingleton<IActionContextAccessor, ActionContextAccessor>();

然后做3步:

在MVC控制器中定义一个变量 private IHttpContextAccessor _accessor DI转换为控制器的构造函数 IHttpContextAccessor访问器 ｛ _accessor = accessor; ｝ 检索IP地址 _accessor.HttpContext.Connection.RemoteIpAddress.ToString ()

事情是这样的。

在我的情况下，我用docker和nginx作为反向代理在DigitalOcean上运行DotNet Core 2.2 Web应用程序。使用Startup.cs中的这段代码，我可以获得客户端IP

app.UseForwardedHeaders(new ForwardedHeadersOptions
        {
            ForwardedHeaders = ForwardedHeaders.All,
            RequireHeaderSymmetry = false,
            ForwardLimit = null,
            KnownNetworks = { new IPNetwork(IPAddress.Parse("::ffff:172.17.0.1"), 104) }
        });

::ffff:172.17.0.1是我在使用之前获得的ip

Request.HttpContext.Connection.RemoteIpAddress.ToString();

试试这个:

string remoteHost = $"{httpContext.Connection.RemoteIpAddress}:{httpContext.Connection.RemotePort}";

第一次添加

Microsoft.AspNetCore.Http
services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();

在Startup.cs中的ConfigureServices中 然后在控制器中添加以下代码

   private IHttpContextAccessor _accessor;
    
  public LoginController(IHttpContextAccessor accessor)
            {
              _accessor = accessor;
            }

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

希望这对你有用