ASP.NET 获取客户端访问端口

using System;  using System.Collections.Generic;
  using System.Web;
  using System.Web.UI;
  using System.Web.UI.WebControls;
  public partial class _Default : System.Web.UI.Page
  {
  private void Page_Load(object sender, System.EventArgs e)
  {
  System.Collections.Specialized.NameValueCollection coll = Request.ServerVariables;
  foreach (string key in coll.AllKeys)
  {
  foreach (string value in coll.GetValues(key))
  {
  Response.Write(key + "------" + value + "<br/>");
  }
  }
  string port = Request.ServerVariables["REMOTE_PORT"].ToString();
  Response.Write(port);
  }
  }