利用TcpClient TcpListener 实现发送图片

客户端：实现向服务器发送文件

using System;

using System.Collections.Generic;

using System.Text;

using System.IO;

using System.Net.Sockets;

using System.Net;

 

namespace tcpclient

{

    class tcpclient

    {

        private static int portNum = 11000;

        static void Main(string[] args)

        {

            //第一步：读取文件

            Console.WriteLine("本程序实现向服务器发送文件...");

            FileStream fs = File.Open("http://www.cnblogs.com/img.gif", FileMode.Open);

            byte[] buffer = new byte[fs.Length];

            fs.Read(buffer, 0, (int)fs.Length);

            fs.Close();

 

            //第二步：发送文件

            try

            {

                TcpClient client = new TcpClient(System.Net.Dns.GetHostName(), portNum);

                NetworkStream ns = client.GetStream();

                ns.Write(buffer, 0, buffer.Length);

                ns.Close();

                client.Close();

            }

            catch (Exception e)

            {

                Console.WriteLine(e.ToString());

            }

        }

    }

}

 

服务器端：不断接收客户端的输入

using System;

using System.Collections.Generic;

using System.Text;

using System.IO;

using System.Net.Sockets;

using System.Net;

 

namespace tcpfile

{

    class tcpserver

    {

        private const int portNum = 11000;

        static void Main(string[] args)

        {

            bool done = false;

            //TcpListener listener = new TcpListener(portNum); //根据VS2005 MSDN 此方法已经过时，不再使用

            // IPEndPoint类将网络标识为IP地址和端口号

            TcpListener listener = new TcpListener(new IPEndPoint(IPAddress.Any, portNum));

            listener.Start();

           while (!done)

            {

                Console.Write("Waiting for connection...");

                TcpClient client = listener.AcceptTcpClient();

                Console.WriteLine("Connection accepted.");

                NetworkStream ns = client.GetStream();

              

                byte[] tempBuffer = new byte[4096];

                FileStream fs = 
                     File.Open(new Random().Next().ToString() + ".gif", 
                     FileMode.CreateNew);

                int bytesRead = 0;

                do

                {

                    bytesRead = ns.Read(tempBuffer, 0, 4096);

                    fs.Write(tempBuffer, 0, bytesRead);

                }while (bytesRead > 0);

               

                fs.Close();

                client.Close();

                Console.WriteLine("file accepted.");

              

            }

            listener.Stop();

        }

 

    }

}