remotable object class libary(interface):
using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.IO;

namespace Interfejs
{
    public interface IPobierz
    {
        string KodHTML(string URL);
    }
}

definitions for this interface(in serwer)
using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.IO;
using Interfejs;

namespace Serwer
{
    class Definicje : MarshalByRefObject, IPobierz
    {
        public string KodHTML(string URL)
        {
            HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(URL);
            HttpWebResponse res = req.GetResponse() as HttpWebResponse;
            Stream data = res.GetResponseStream();
            StreamReader sr = new StreamReader(data);
            string html = sr.ReadToEnd();
            return html; 
        }
    }
}