C# 通过x509证书 调用WCF的例子源码下载

封装HttpWebRequest常用方法

socket 客户端和服务端发送和接收文件的源代码(the source code of socket in order to send and receive file)

一个用C写的内存管理系统,模拟操作系统内存,很好不错的(A memory management system written in C, analog operating system memory, very good)

黑客攻防入门书籍 很好很强大 讲了各种攻击方法(Getting Started with a very good offensive and defensive hacking books, talk about a variety of very strong attack methods)

网络瓶颈测量的一个工具，能够计算链路带宽，可用带宽，瓶颈定位等(pathneck bottleneck location)

ASP.NET车站售票系统的设计与实现(源码+数据库+毕业论文)

c++ tcp文件传输例子源码下载(含服务器端和客户端完整源码)

这个源码涉及到网络编程，图像处理，数据压缩与传输。(source involved in the programming of the network, image processing, data compression and transmission.)

private void Connect_Click(object sender, System.EventArgs e)        {            //将光标置为等待状态            Cursor cr = Cursor.Current;            Cursor.Current = Cursors.WaitCursor;            String a ,b,c;              //用110端口新建POP3服务器连接            Server = new TcpClient(PopServer.Text, 110);            Status.Items.Clear();             try            {                //初始化                NetStrm = Server.GetStream();                RdStrm = new StreamReader(Server.GetStream());                Status.Items.Add(RdStrm.ReadLine());                 //登录服务器过程                Data = "USER " Username.Text CRLF;                szData = System.Text.Encoding.ASCII.GetBytes(Data.ToCharArray());                NetStrm.Write(szData, 0, szData.Length);                Status.Items.Add(RdStrm.ReadLine());                 Data = "PASS " Password.Text CRLF;                szData = System.Text.Encoding.ASCII.GetBytes(Data.ToCharArray());                NetStrm.Write(szData, 0, szData.Length);                Status.Items.Add(RdStrm.ReadLine());                 //向服务器发送STAT命令，从而取得邮箱的相关信息：邮件数量和大小                Data = "STAT" CRLF;                szData = System.Text.Encoding.ASCII.GetBytes(Data.ToCharArray());                NetStrm.Write(szData, 0, szData.Length);                //Status.Items.Add(RdStrm.ReadLine());                 //改变按钮的状态                Connect.Enabled = false;                Disconnect.Enabled = true;                Retrieve.Enabled = true;                 //将光标置回原来状态                Cursor.Current = cr;             }            catch (InvalidOperationException err)            {                Status.Items.Add("Error: " err.ToString());            }        }

可以查询网络DNS的一个小程序，以运行，无错误，可直接使用(Can the DNS query network a small program to run, no mistake, can use directly)