How to send a request to Opensimulator server

I'm trying to testing a server performance, while the number of users increse, for a CVE system by using OpenSimulator. I thought to send, while bots moving in the CVE, a request to the Server and get its response time. I'm trying to do it with code below:

using System;
using System.Net;

namespace Request
{
    class MainClass
    {
        public static void Main(string[] args)
        {
            WebRequest req = HttpWebRequest.Create("http://externalip:9000/");

            try
            {
                // get the time of a sync request
                var watch = System.Diagnostics.Stopwatch.StartNew();
                WebResponse response = req.GetResponse();
                watch.Stop();
                var elapsedMs = watch.ElapsedMilliseconds;
                //

                long len = response.ContentLength;

                if (len <= 0)
                {
                    Console.WriteLine("ERROR: Got length {0} for {1} {2}", len, req.Method, req.RequestUri);
                }
                else
                {
                    Console.WriteLine("Got length {0} for {1} {2}", len, req.Method, req.RequestUri);
                }
            }
            catch (WebException e)
            {
                Console.WriteLine("ERROR: Got {0} on {1} {2}", e.Status, req.Method, req.RequestUri);
            }
        }
    }
}

But i noticed that it work only with request to a specific resource. So I thought two possibility:

• Find a uri to request a resource, like a texture

• Find a way to send a generic request to the server

How can i implement one of these solutions? Any other suggestions?