using System;

public class Program

{

    public static void Main()

    {

        var SiteUrl = "http://localhost:80";

        var Path = string.Format("/tunnel/{0}/proxyies", Guid.NewGuid());

        var UuId = Guid.NewGuid();

        var uri = new Uri(new Uri(new Uri(SiteUrl), Path), UuId.ToString()).ToString();

        Console.WriteLine(uri);

    }

}