Asp Net Web API 2.1 get client IP address
C#asp.netasp.net Web-ApiC# Problem Overview
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 ?
HttpContext.Current.Request.UserHostAddress;
from other questions:
public static class HttpRequestMessageExtensions
{
private const string HttpContext = "MS_HttpContext";
private const string RemoteEndpointMessage = "System.ServiceModel.Channels.RemoteEndpointMessageProperty";
public static string GetClientIpAddress(this HttpRequestMessage request)
{
if (request.Properties.ContainsKey(HttpContext))
{
dynamic ctx = request.Properties[HttpContext];
if (ctx != null)
{
return ctx.Request.UserHostAddress;
}
}
if (request.Properties.ContainsKey(RemoteEndpointMessage))
{
dynamic remoteEndpoint = request.Properties[RemoteEndpointMessage];
if (remoteEndpoint != null)
{
return remoteEndpoint.Address;
}
}
return null;
}
}
C# Solutions
Solution 1 - C#
Following link might help you. Here's code from the following link.
reference : getting-the-client-ip-via-asp-net-web-api
using System.Net.Http;
using System.ServiceModel.Channels;
using System.Web;
using System.Web.Http;
namespace Trikks.Controllers.Api
{
public class IpController : ApiController
{
public string GetIp()
{
return GetClientIp();
}
private string GetClientIp(HttpRequestMessage request = null)
{
request = request ?? Request;
if (request.Properties.ContainsKey("MS_HttpContext"))
{
return ((HttpContextWrapper)request.Properties["MS_HttpContext"]).Request.UserHostAddress;
}
else if (request.Properties.ContainsKey(RemoteEndpointMessageProperty.Name))
{
RemoteEndpointMessageProperty prop = (RemoteEndpointMessageProperty)request.Properties[RemoteEndpointMessageProperty.Name];
return prop.Address;
}
else if (HttpContext.Current != null)
{
return HttpContext.Current.Request.UserHostAddress;
}
else
{
return null;
}
}
}
}
Another way of doing this is below.
reference: how-to-access-the-client-s-ip-address
For web hosted version
string clientAddress = HttpContext.Current.Request.UserHostAddress;
For self hosted
object property;
Request.Properties.TryGetValue(typeof(RemoteEndpointMessageProperty).FullName, out property);
RemoteEndpointMessageProperty remoteProperty = property as RemoteEndpointMessageProperty;
Solution 2 - C#
With Web API 2.2: Request.GetOwinContext().Request.RemoteIpAddress
Solution 3 - C#
Try to get the Ip using
ip = HttpContext.Current != null ? HttpContext.Current.Request.UserHostAddress : "";
Solution 4 - C#
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;
}
Solution 5 - C#
I think this is the most clear solution, using an extension method:
public static class HttpRequestMessageExtensions
{
private const string HttpContext = "MS_HttpContext";
private const string RemoteEndpointMessage = "System.ServiceModel.Channels.RemoteEndpointMessageProperty";
public static string GetClientIpAddress(this HttpRequestMessage request)
{
if (request.Properties.ContainsKey(HttpContext))
{
dynamic ctx = request.Properties[HttpContext];
if (ctx != null)
{
return ctx.Request.UserHostAddress;
}
}
if (request.Properties.ContainsKey(RemoteEndpointMessage))
{
dynamic remoteEndpoint = request.Properties[RemoteEndpointMessage];
if (remoteEndpoint != null)
{
return remoteEndpoint.Address;
}
}
return null;
}
}
So just use it like:
var ipAddress = request.GetClientIpAddress();
We use this in our projects.
Source/Reference: Retrieving the client’s IP address in ASP.NET Web API
Solution 6 - C#
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?
Solution 7 - C#
It's better to cast it to HttpContextBase, this way you can mock and test it more easily
public string GetUserIp(HttpRequestMessage request)
{
if (request.Properties.ContainsKey("MS_HttpContext"))
{
var ctx = request.Properties["MS_HttpContext"] as HttpContextBase;
if (ctx != null)
{
return ctx.Request.UserHostAddress;
}
}
return null;
}
Solution 8 - C#
My solution is similar to user1587439's answer, but works directly on the controller's instance (instead of accessing HttpContext.Current).
In the 'Watch' window, I saw that this.RequestContext.WebRequest contains the 'UserHostAddress' property, but since it relies on the WebHostHttpRequestContext type (which is internal to the 'System.Web.Http' assembly) - I wasn't able to access it directly, so I used reflection to directly access it:
string hostAddress = ((System.Web.HttpRequestWrapper)this.RequestContext.GetType().Assembly.GetType("System.Web.Http.WebHost.WebHostHttpRequestContext").GetProperty("WebRequest").GetMethod.Invoke(this.RequestContext, null)).UserHostAddress;
I'm not saying it's the best solution. using reflection may cause issues in the future in case of framework upgrade (due to name changes), but for my needs it's perfect
Solution 9 - C#
string userRequest = System.Web.HttpContext.Current.Request.UserHostAddress;
This works on me.
System.Web.HttpContext.Current.Request.UserHostName; this one return me the same return I get from the UserHostAddress.