请问如何在ASP中获取客户端IP地址?NET时使用MVC 6。 请求。ServerVariables["REMOTE_ADDR"]无效。


当前回答

我发现,你们中的一些人发现你们得到的IP地址是:::1或0.0.0.1

这是一个问题,因为你试图从你自己的机器获取IP,而c#试图返回IPv6的混乱。

所以,我实现了来自@Johna (https://stackoverflow.com/a/41335701/812720)和@David (https://stackoverflow.com/a/8597351/812720)的答案,感谢他们!

下面是解决方案:

add Microsoft.AspNetCore.HttpOverrides Package in your References (Dependencies/Packages) add this line in Startup.cs public void Configure(IApplicationBuilder app, IHostingEnvironment env) { // your current code // start code to add // to get ip address app.UseForwardedHeaders(new ForwardedHeadersOptions { ForwardedHeaders = ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto }); // end code to add } to get IPAddress, use this code in any of your Controller.cs IPAddress remoteIpAddress = Request.HttpContext.Connection.RemoteIpAddress; string result = ""; if (remoteIpAddress != null) { // If we got an IPV6 address, then we need to ask the network for the IPV4 address // This usually only happens when the browser is on the same machine as the server. if (remoteIpAddress.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6) { remoteIpAddress = System.Net.Dns.GetHostEntry(remoteIpAddress).AddressList .First(x => x.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork); } result = remoteIpAddress.ToString(); }

现在你可以从remoteIpAddress或result获取IPv4地址

其他回答

在项目。Json添加一个依赖:

"Microsoft.AspNetCore.HttpOverrides": "2.2.0"

在Startup.cs中,在Configure()方法中添加:

app.UseForwardedHeaders(new ForwardedHeadersOptions
{
    ForwardedHeaders = ForwardedHeaders.XForwardedFor |
    ForwardedHeaders.XForwardedProto
});  

当然,还有:

using Microsoft.AspNetCore.HttpOverrides;

然后,我可以通过使用:

Request.HttpContext.Connection.RemoteIpAddress

在我的情况下,在VS中调试时,我总是得到IpV6 localhost,但在IIS上部署时,我总是得到远程IP。

一些有用的链接: 如何在ASP中获取客户端IP地址。网络核心?RemoteIpAddress为空

::1可能是因为:

连接终止在IIS,然后转发到Kestrel, v.next web服务器,因此连接到web服务器确实是从本地主机。(https://stackoverflow.com/a/35442401/5326387)

编辑12/2020:感谢SolidSnake:截至2020年12月,最新版本是2.2.0

Edit 06/2021:感谢Hakan fakhtik:在。net 5中,命名空间是Microsoft.AspNetCore.Builder

您可以使用IHttpConnectionFeature来获取此信息。

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

API已经更新。不知道它什么时候改变了,但根据达米安·爱德华兹在12月底的说法,你现在可以这样做:

var remoteIpAddress = request.HttpContext.Connection.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。