Asp Net Web API 2.1 get client IP address

Question

Hello I need get client IP that request some method in web api, I have tried to use this code from here but it always returns server local IP, how to get in correct way ?

Answer 1

If you're self-hosting with Asp.Net 2.1 using the OWIN Self-host NuGet package you can use the following code:

 private string getClientIp(HttpRequestMessage request = null)
    {
        if (request == null)
        {
            return null;
        }

        if (request.Properties.ContainsKey("MS_OwinContext"))
        {
            return ((OwinContext) request.Properties["MS_OwinContext"]).Request.RemoteIpAddress;
        }
        return null;
    }

Answer 2

Replying to this 4 year old post, because this seems overcomplicated to me, at least if you're hosting on IIS.

Here's how I solved it:

using System;
using System.Net;
using System.Web;
using System.Web.Http;
...
[HttpPost]
[Route("ContactForm")]
public IHttpActionResult PostContactForm([FromBody] ContactForm contactForm)
    {
        var hostname = HttpContext.Current.Request.UserHostAddress;
        IPAddress ipAddress = IPAddress.Parse(hostname);
        IPHostEntry ipHostEntry = Dns.GetHostEntry(ipAddress);
        ...

Unlike OP, this gives me the client IP and client hostname, not the server. Perhaps they've fixed the bug since then?

Answer 3

Try to get the Ip using

ip = HttpContext.Current != null ? HttpContext.Current.Request.UserHostAddress : "";