Question

我刚刚开始研究会话模式，但是花了几个小时后发现了一些我无法通过谷歌搜索找到的疑问..希望我能在这里获得专业建议/解决方案..

我们分别有三台服务器192.xxx.xxx.A，192.xxx.xxx.B，192.xxx.xxx.C（集群）和NLB（硬件）部署我们的应用程序，之前我创建了一个测试网站检查会话状态故障转移，下面是提到的测试网站的代码。

ASPX：

    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="TestCluster.aspx.cs" Inherits="TestCluster" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Test Cluster</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <h1>Test Cluster</h1>
    <asp:Button ID="btnSession" runat="server" Text="Session Test" 
            onclick="btnSession_Click"/>

    </div>
    </form>
</body>
</html>

在上面的代码中，我只有一个按钮，点击按钮时，我的HTTP请求将会启动。

ASPX.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;


public partial class TestCluster : System.Web.UI.Page
{

    static string seesionTest = "";
    static int counterAlive = 0;
    static int counterdDead = 0;
    static int isPostBackCounter = 0;
    static string IspostBack = "";
    System.IO.StreamWriter file;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            Session["activeSession"] = "Session is Alive";

            isPostBackCounter = isPostBackCounter + 1;
            if (isPostBackCounter > 1)
            {
                IspostBack = "PostBack Happened";
            }
        }

    }
    protected void btnSession_Click(object sender, EventArgs e)
    {
        long lg = 0;
        btnSession.Enabled = false;
        for (; ; )
        {
            lg++;
            if (lg == 9223372036)
            {
                btnSession.Enabled = true;
                break;
            }
            httpProcessStart();
        }
    }

    protected void httpProcessStart()
    {
        file = new System.IO.StreamWriter("e:\\log.txt");
        file.WriteLine("httpProcessStart called.");
        try
        {
            file.WriteLine("Session-"+Session["activeSession"].ToString());
            if (Session["activeSession"] != null && Session["activeSession"].ToString() != "")
            {
                file.WriteLine("activeSession");
                seesionTest = "";
                counterAlive = counterAlive + 1;
                string compName = "Response coming from " + System.Environment.GetEnvironmentVariable("COMPUTERNAME");
                seesionTest += "<br>" + counterAlive + ":" + Session["activeSession"].ToString() + " ";
                string text = "";
                if (IspostBack != null && IspostBack != "")
                {
                    text = seesionTest + ", " + "  " + IspostBack + ",  " + "  " + compName;
                }
                else
                {
                    text = seesionTest + ",  " + " " + compName;
                }
                string lines = text + DateTime.Now + "\r\n";
                file.WriteLine(lines);
                file.Flush();
                file.Close();

            }
            else
            {
                file.WriteLine("sessionDead");
                btnSession.Enabled = false;
                counterdDead = counterdDead + 1;
                string seesionDead = "Session is dead restart application";
                string text = "";
                text = seesionDead;
                string lines = text + DateTime.Now + "\r\n";
                file.WriteLine(lines);
                file.Flush();
                file.Close();
                counterAlive = 0;
            }


        }

        catch (Exception ex)
        {

            throw ex;
        }
    }
}

的web.config

<sessionState mode="StateServer" cookieless="false" timeout="20" stateConnectionString="tcpip=xxx.xxx.xxx.B:42424">

如上所述，我们有三台服务器，所以我使用服务器B来存储会话状态。提供的代码经过测试并且工作正常，但是这是一个疑问，IP（stateConnectionString =＆＃34; tcpip =？＆＃34;）如果建立NLB要么我们使用NLB的虚拟IP还是任何其他IP？如果使用NLB的虚拟IP会话将要存储在哪里？

ASP.net会话状态在群集上进行故障转移

0 个答案: