c# - 在 ASP.NET Core 2.2 中获取客户端的 IP 地址

Question

我在 asp.net core 2.2 中创建了一个微服务应用程序。我想从他使用它的地方取出用户的 IP 地址。

下面的代码片段提供了托管服务器的 IP 地址。

var remoteIpAddress = request.HttpContext.Connection.RemoteIpAddress;

我想获取将 API 用于审核日志目的的用户的 IP 地址。

Answer 1

注入(inject) IHttpContextAccessor

然后放下面的片段

var result = string.Empty;

 //first try to get IP address from the forwarded header
                if (_httpContextAccessor.HttpContext.Request.Headers != null)
                {
                    //the X-Forwarded-For (XFF) HTTP header field is a de facto standard for identifying the originating IP address of a client
                    //connecting to a web server through an HTTP proxy or load balancer

                    var forwardedHeader = _httpContextAccessor.HttpContext.Request.Headers["X-Forwarded-For"];
                    if (!StringValues.IsNullOrEmpty(forwardedHeader))
                        result = forwardedHeader.FirstOrDefault();
                }

                //if this header not exists try get connection remote IP address
                if (string.IsNullOrEmpty(result) && _httpContextAccessor.HttpContext.Connection.RemoteIpAddress != null)
                    result = _httpContextAccessor.HttpContext.Connection.RemoteIpAddress.ToString();

我认为它可能会起作用。