Question

我正在尝试获取客户端IP并将值与配置进行比较。如果匹配，则需要返回true / false。如何使此变量可供Web应用程序访问？我是.NET Core的新手。谢谢

我已跟随本文创建中间件类，但不确定如何从此上下文传递变量。

https://docs.microsoft.com/en-us/aspnet/core/security/ip-safelist?view=aspnetcore-2.2

for name, email, message in csv_reader:
    yag.send(email, subject = name, contents = message)
    print("sent")
    time.sleep(wait)

Answer 1

我会创建一个界面，例如：

public interface IIPChecker
{
    bool IsSafe(IPAddress remoteIpAddress);
}

具有实现：

public class IPChecker : IIPChecker
{
    private readonly IPAddress[] _safeList;

    public IPChecker(string safeList)
    {
        var _safeList = safeList
            .Split(';')
            .Select(IPAddress.Parse)
            .ToArray();
    }

    public bool IsSafe(IPAddress remoteIpAddress)
    {
        return _safeList.Contains(remoteIpAddress);
    }
}

并将其注入需要它的控制器中

public class ValuesController : ControllerBase
{
    private readonly IIPChecker _ipChecker;

    public ValuesController(IIPChecker ipChecker)
    {
        _ipChecker = ipChecker;
    }

    // GET api/values
    [HttpGet]
    public ActionResult<IEnumerable<string>> Get()
    {
        var isValid = _ipChecker.IsSafe(HttpContext.Connection.RemoteIpAddress);

        .....
    }
}

如果在所有控制器中都需要此信息，则可以将其更改为从类似的东西继承

public class IpCheckController : ControllerBase
{
    private readonly IIPChecker _ipChecker;

    public IpCheckController(IIPChecker ipChecker)
    {
        _ipChecker = ipChecker;
    }

    private bool IsSafe => _ipChecker.IsSafe(HttpContext.Connection.RemoteIpAddress);
}

Answer 2

获取客户端RemoteIp并与配置值进行比较。您必须先在启动文件中定义 Http访问器，如下所示。

services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();

，然后在中间件中使用以下代码访问RemoteIp并比较该值。

var remoteIp = context.Request.HttpContext.Connection.RemoteIpAddress.ToString();

获取客户端IP并将值与配置进行比较

2 个答案: