Enhanced HttpContext.GetRemoteIpAddress() extension

UnitTests/AspNetCore/Extensions/HttpContextExtensionsTests.cs

@@ -113,9 +113,9 @@ namespace UnitTests.AspNetCore.Extensions
 		}
 
 		[DataTestMethod]
-		[DataRow("X-Forwarded-For")]
+		[DataRow("Cf-Connecting-Ip")]
 		[DataRow("X-Real-IP")]
-		[DataRow("CF-Connecting-IP")]
+		[DataRow("X-Forwarded-For")]
 		public void ShouldReturnDefaultHeader(string headerName)
 		{
 			// arrange
@@ -170,6 +170,24 @@ namespace UnitTests.AspNetCore.Extensions
 			Assert.AreEqual(remote, result);
 		}
 
+		[TestMethod]
+		public void ShouldReturnFirstAddressOnMultipleProxies()
+		{
+			// arrange
+			remote = IPAddress.Parse("1.2.3.4");
+			var header = IPAddress.Parse("5.6.7.8");
+			requestHeaders.Add("X-Forwarded-For", $"{header}, 111.222.111.222");
+
+			var context = GetContext();
+
+			// act
+			var result = context.GetRemoteIpAddress();
+
+			// assert
+			Assert.AreNotEqual(remote, result);
+			Assert.AreEqual(header, result);
+		}
+
 		#endregion RemoteAddres
 
 		#region Local Request