在ASP.NET Core中，如何检查请求是否为本地? [英] In ASP.NET Core how do you check if request is local?

问题描述

在常规ASP.NET中，您可以通过执行此操作来确定当前请求是否来自本地主机:

In the regular ASP.NET you could do this in a view to determine if the current request was from localhost:

HttpContext.Current.Request.IsLocal

但是无论如何，在ASP.NET 6/Core/中我都找不到类似的东西.

But I can't find something similar in ASP.NET 6/Core/whatever it is meant to be called.

推荐答案

更新:ASP.NET Core 2.0具有一种称为Url.IsLocalUrl 的方法(请参见此我认为该代码可以工作，但是我无法对其进行完整的测试

I think this code will work, but I haven't been able to test it completely

var callingUrl = Request.Headers["Referer"].ToString();
var isLocal = Url.IsLocalUrl(callingUrl);

但是请参见下面Will Dean对这种方法的评论:

But see Will Dean's comment below about this approach:

任何想使用更新"版本来检查Referrer标头的人都应牢记，标头极易被欺骗，在某种程度上不适用于环回IP地址.

Anyone thinking about using the 'updated' version which checks the Referrer header should bear in mind that headers are extremely easy to spoof, to a degree that doesn't apply to loopback IP addresses.

---

原始解决方案

我碰到了这种情况，它在寻找一种解决方案来知道请求是否是本地的.不幸的是，ASP.NET 1.1.0版在连接上没有IsLocal方法.我在名为 Strathweb ，但那也已经过时了.

I came across this looking for a solution to knowing if a request is local. Unfortunately ASP.NET version 1.1.0 does not have a IsLocal method on a connection. I found one solution on a web site called Strathweb but that is out of date too.

我已经创建了自己的IsLocal扩展名，并且似乎可以使用，但是我不能说我已经在所有情况下都进行了测试，但是欢迎您尝试一下.

I have created my own IsLocal extension, and it seems to work, but I can't say I have tested it in all circumstances, but you are welcome to try it.

public static class IsLocalExtension
{
    private const string NullIpAddress = "::1";

    public static bool IsLocal(this HttpRequest req)
    {
        var connection = req.HttpContext.Connection;
        if (connection.RemoteIpAddress.IsSet())
        {
            //We have a remote address set up
            return connection.LocalIpAddress.IsSet() 
                  //Is local is same as remote, then we are local
                ? connection.RemoteIpAddress.Equals(connection.LocalIpAddress) 
                  //else we are remote if the remote IP address is not a loopback address
                : IPAddress.IsLoopback(connection.RemoteIpAddress);
        }

        return true;
    }

    private static bool IsSet(this IPAddress address)
    {
        return address != null && address.ToString() != NullIpAddress;
    }
}

您可以通过使用Request属性(即

You call it in a controller action from using the Request property, i.e.

 public IActionResult YourAction()
 {
     var isLocal = Request.IsLocal();
     //... your code here
 }

我希望能对某人有所帮助.

I hope that helps someone.

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