using System;
using System.Net.Http;
using System.ServiceModel.Channels; // Necessita la reference alla libreria System.ServiceModel
using System.Web;
using System.Web.Http;
//etc
        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;
            }
        }

public string DetectClientBrowser()
{
	string browserSignature = string.Empty;
	try
	{
		var userAgent = HttpContext.Current.Request.UserAgent;
		HttpBrowserCapabilities userBrowser = new HttpBrowserCapabilities
		{
			Capabilities = new Hashtable { { string.Empty, userAgent } }
		};
		var factory = new BrowserCapabilitiesFactory();
		factory.ConfigureBrowserCapabilities(new NameValueCollection(), userBrowser);
 
		//Set User browser Properties
		browserSignature = $"{userBrowser.Browser}_{userBrowser.Version}";
		//m_log.Debug($"browser {browserSignature}");
	}
	catch (Exception ex)
	{
		m_log.Error(ex.Message, ex);
	}
	return browserSignature;
}