【新增】增加获取用户真实ip地址中间件【RealIpMiddleware】，防止Nginx转发后只能获取服务器ip的问题。

CoreCms.Net.Middlewares/MiddlewareHelpers.cs

@@ -30,6 +30,16 @@ namespace CoreCms.Net.Middlewares
             return app.UseMiddleware<RequRespLogMildd>();
         }
 
+        /// <summary>
+        /// 获取用户访问真实ip
+        /// </summary>
+        /// <param name="app"></param>
+        /// <returns></returns>
+        public static IApplicationBuilder RealIpMiddleware(this IApplicationBuilder app)
+        {
+            return app.UseMiddleware<RealIpMiddleware>();
+        }
+
 
         /// <summary>
         /// 异常处理中间件（后端模式）
@@ -67,7 +77,7 @@ namespace CoreCms.Net.Middlewares
         /// <param name="app"></param>
         /// <param name="dataSources"></param>
         /// <returns></returns>
-        public static IApplicationBuilder UseRecordAccessLogsMildd(this IApplicationBuilder app,string dataSources)
+        public static IApplicationBuilder UseRecordAccessLogsMildd(this IApplicationBuilder app, string dataSources)
         {
             return app.UseMiddleware<RecordAccessLogsMildd>(dataSources);
         }

CoreCms.Net.Middlewares/RealIpMiddleware.cs

@@ -0,0 +1,31 @@
+using Microsoft.AspNetCore.Http;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CoreCms.Net.Middlewares
+{
+    /// <summary>
+    /// 获取真实ip地址
+    /// </summary>
+    public class RealIpMiddleware
+    {
+        private readonly RequestDelegate _next; public RealIpMiddleware(RequestDelegate next)
+        {
+            _next = next;
+        }
+        public Task Invoke(HttpContext context)
+        {
+            var headers = context.Request.Headers;
+            if (headers.ContainsKey("X-Forwarded-For"))
+            {
+                context.Connection.RemoteIpAddress = IPAddress.Parse(headers["X-Forwarded-For"].ToString().Split(',', StringSplitOptions.RemoveEmptyEntries)[0]);
+            }
+            return _next(context);
+        }
+    }
+
+}