How to get client's IP address on an Azure Web App developed in ASP.NET?

Question

I have developed a web application that is deployed as a web app on Azure.

I need to get the client's IP address such that I can use a GeoIP API to get the country from which the client is connecting.

So here's my question, how can I get the client's IP address when they send a request to view the homepage? I am using ASP.NET MVC.

I tried System.Web.HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]; but it returns null so does ["HTTP_X_FORWARDED_FOR"] — EidolonMK, Oct 01 '17 at 18:35
You could check this list https://stackoverflow.com/a/6914521/2373249 — hardkoded, Oct 01 '17 at 18:43

score 9 · Answer 1 · answered Oct 01 '17 at 19:35

9

Try this (verified on an Azure Web App using ASP.NET Core 2.x):

using Microsoft.AspNetCore.Http.Features;
using System.Net;

....

var connection = HttpContext.Features.Get<IHttpConnectionFeature>();
IPAddress clientIP = connection.RemoteIpAddress;

answered Oct 01 '17 at 19:35

David Ebbo

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IPv4 Address? I think it is not. – Ahmer Ali Ahsan Jul 17 '18 at 20:17
This works on .net core 3.1 – James Westgate Nov 25 '21 at 12:48

How to get client's IP address on an Azure Web App developed in ASP.NET?

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