NGINX X_FORWARDED_FOR example

#11
stefanprodan · Jan 11, 2017 · 5306bed · 5306bed
1 parent cf0882a
commit 5306bed
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Showing 3 changed files with 33 additions and 2 deletions.
diff --git a/MvcThrottle.Demo/App_Start/FilterConfig.cs b/MvcThrottle.Demo/App_Start/FilterConfig.cs
@@ -80,6 +80,7 @@ public static void RegisterGlobalFilters(GlobalFilterCollection filters)
                         { "Home/about", new RateLimits { PerHour = 30 } }
                     }
                 },
+                IpAddressParser = new NginxIpAddressParser(),
                 Logger = new MvcThrottleCustomLogger()
             };
 

diff --git a/MvcThrottle.Demo/Helpers/NginxIpAddressParser.cs b/MvcThrottle.Demo/Helpers/NginxIpAddressParser.cs
@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Web;
+
+namespace MvcThrottle.Demo.Helpers
+{
+    public class NginxIpAddressParser : IpAddressParser
+    {
+        public override string GetClientIp(HttpRequestBase request)
+        {
+            var ipAddress = request.UserHostAddress;
+
+            // get client IP from reverse proxy
+            var xForwardedFor = request.ServerVariables["HTTP_X_FORWARDED_FOR"];
+            if (!string.IsNullOrEmpty(xForwardedFor))
+            {
+                // Search for public IP addresses 
+                var publicForwardingIps = xForwardedFor.Split(',').Where(ip => !IsPrivateIpAddress(ip)).ToList();
+
+                // If we found any public IP, return the first one when NGNIX is used, otherwise return the user host address
+                return publicForwardingIps.Any() ? publicForwardingIps.First().Trim() : ipAddress;
+            }
+
+            return ipAddress;
+        }
+    }
+}
diff --git a/MvcThrottle.Demo/MvcThrottle.Demo.csproj b/MvcThrottle.Demo/MvcThrottle.Demo.csproj
@@ -15,13 +15,14 @@
     <AssemblyName>MvcThrottle.Demo</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
-    <UseIISExpress>false</UseIISExpress>
+    <UseIISExpress>true</UseIISExpress>
     <IISExpressSSLPort />
     <IISExpressAnonymousAuthentication />
     <IISExpressWindowsAuthentication />
     <IISExpressUseClassicPipelineMode />
     <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\</SolutionDir>
     <RestorePackages>true</RestorePackages>
+    <UseGlobalApplicationHostFile />
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -126,6 +127,7 @@
     </Compile>
     <Compile Include="Helpers\MvcThrottleCustomFilter.cs" />
     <Compile Include="Helpers\MvcThrottleCustomLogger.cs" />
+    <Compile Include="Helpers\NginxIpAddressParser.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <ItemGroup>
@@ -194,7 +196,7 @@
           <AutoAssignPort>True</AutoAssignPort>
           <DevelopmentServerPort>53048</DevelopmentServerPort>
           <DevelopmentServerVPath>/</DevelopmentServerVPath>
-          <IISUrl>http://localhost/MvcThrottle.Demo</IISUrl>
+          <IISUrl>http://localhost:53048/</IISUrl>
           <NTLMAuthentication>False</NTLMAuthentication>
           <UseCustomServer>False</UseCustomServer>
           <CustomServerUrl>