获取连接到C＃.NET WebAPI应用程序的客户端的IP地址 [英] Get the IP address of the client connecting to a C# .NET WebAPI application

问题描述

我试过：

private const string HttpContext = "MS_HttpContext";
private const string RemoteEndpointMessage = "System.ServiceModel.Channels.RemoteEndpointMessageProperty";

public static string GetClientIpAddress(HttpRequestMessage request)
{
    if (request.Properties.ContainsKey(HttpContext))
    {
        dynamic ctx = request.Properties[HttpContext];
        if (ctx != null)
        {
            return ctx.Request.UserHostAddress;
        }
    }

    if (request.Properties.ContainsKey(RemoteEndpointMessage))
    {
        dynamic remoteEndpoint = request.Properties[RemoteEndpointMessage];
        if (remoteEndpoint != null)
        {
            return remoteEndpoint.Address;
        }
    }

    return null;
}

根据：

检索客户端在ASP.Net Web API中的IP地址

这是对自托管主机和webapi主机应该有效的组合方法。不幸的是，我得到 null 而不是IP地址。

this is the combined approach which should be valid for self host and webapi host. Unfortunately I get null instead of the IP address.

我正在尝试本地，所以我希望 127.0.0.1 或 localhost 作为IP地址

I'm trying locally so I'd expect 127.0.0.1 or localhost as the IP address

推荐答案

以下是您所拥有的扩展版本。

Here is an expanded version of what you have that works for me.

static class HttpRequestMessageExtensions {

    private const string HttpContext = "MS_HttpContext";
    private const string RemoteEndpointMessage = "System.ServiceModel.Channels.RemoteEndpointMessageProperty";
    private const string OwinContext = "MS_OwinContext";

    public static string GetClientIpString(this HttpRequestMessage request) {
        //Web-hosting
        if (request.Properties.ContainsKey(HttpContext)) {
            dynamic ctx = request.Properties[HttpContext];
            if (ctx != null) {
                return ctx.Request.UserHostAddress;
            }
        }
        //Self-hosting
        if (request.Properties.ContainsKey(RemoteEndpointMessage)) {
            dynamic remoteEndpoint = request.Properties[RemoteEndpointMessage];
            if (remoteEndpoint != null) {
                return remoteEndpoint.Address;
            }
        }
        //Owin-hosting
        if (request.Properties.ContainsKey(OwinContext)) {
            dynamic ctx = request.Properties[OwinContext];
            if (ctx != null) {
                return ctx.Request.RemoteIpAddress;
            }
        }
        if (System.Web.HttpContext.Current != null) {
            return System.Web.HttpContext.Current.Request.UserHostAddress;
        }
        // Always return all zeroes for any failure
        return "0.0.0.0";
    }

    public static IPAddress GetClientIpAddress(this HttpRequestMessage request) {
        var ipString = request.GetClientIpString();
        IPAddress ipAddress = new IPAddress(0);
        if (IPAddress.TryParse(ipString, out ipAddress)) {
            return ipAddress;
        }

        return ipAddress;
    }

}

假设你在控制器中上面的扩展方法允许调用如：

Assuming you are in a controller the above extension method allows for calls like:

HttpRequestMessage request = this.Request;

var ip = request.GetClientIpString();

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