How do I get the caller's IP address in a WebMethod?

Question

How do I get the caller's IP address in a WebMethod?

[WebMethod]
public void Foo()
{
    // HttpRequest... ? - Not giving me any options through intellisense...
}

using C# and ASP.NET

Answer 1

HttpContext.Current.Request.UserHostAddress is what you want.

Answer 2

The HttpContext is actually available inside the WebService base class, so just use Context.Request (or HttpContext.Current which also points to the current context) to get access to the members provided by the HttpRequest.

Answer 3

Try this:

string ipAddress = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];

Haven't tried it in a webMethod, but I use it in standard HttpRequests

Answer 4

Try:

Context.Request.UserHostAddress

Answer 5

Just a caution. IP addresses can't be used to uniquely identify clients. NAT Firewalls and corporate proxies are everywhere, and hide many users behind a single IP.