Request.UserHostAddress return IP address of Load Balancer

Question

I have a critical line of code in my site that worked in our development environment but not on production. Well, I say it worked in development but the truth is it gave

Answer 1

Used this code to inspect production environment... It worked for me:

    System.Web.HttpRequest oRequest = System.Web.HttpContext.Current.Request;

    string header;
    string ip;

    header = "HTTP_X_FORWARDED_FOR";
    ip = oRequest.ServerVariables[header];
    Response.Write(string.Format("{0} - {1}", header, ip) + Environment.NewLine);

    header = "REMOTE_ADDR";
    ip = oRequest.ServerVariables[header];
    Response.Write(string.Format("{0} - {1}", header, ip) + Environment.NewLine);

    header = "HTTP_CLIENT_IP";
    ip = oRequest.ServerVariables[header];
    Response.Write(string.Format("{0} - {1}", header, ip) + Environment.NewLine);

    header = "Request.UserHostAddress";
    ip = oRequest.UserHostAddress;
    Response.Write(string.Format("{0} - {1}", header, ip) + Environment.NewLine);