Socket 传送文件

服务器端：

 Thread recvThread;

 private void StartReceive()

 {

     recvThread = new Thread(new ThreadStart(Recv));

     recvThread.IsBackground = false;

     recvThread.Start();

 }

 Socket listenSocket;

 private void Recv()

 {

    IPEndPoint local = new IPEndPoint(Dns.GetHostByName(Dns.GetHostName()).AddressList[0], 2005);

    EndPoint localEP = (EndPoint)local;

    listenSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); //定义Socket并初始化

    listenSocket.Bind(localEP);

    listenSocket.Listen(10);

    while (true)

    {

       Socket socket = listenSocket.Accept();

       if (socket.Connected)

       {

           //先接收文件名

           byte[] fileNameBuffer = new byte[1024];

           socket.Receive(fileNameBuffer, 0, fileNameBuffer.Length, SocketFlags.None);

           string fileName = Encoding.UTF8.GetString(fileNameBuffer);

           string[] str = fileName.Split(new char[] { '#' });

           fileName = str[0];

           string pathRecv = "d:\\aaa\\" + fileName;

           FileStream file = new FileStream(pathRecv, FileMode.OpenOrCreate, FileAccess.Write); //写入文件流

           //再接收文件内容

           byte[] buffer = new byte[1024];

           int bytesRecv;

           int totalBytes = 0;

           do

           {

               bytesRecv = socket.Receive(buffer, 0, buffer.Length, SocketFlags.None);

               totalBytes += bytesRecv;

               file.Write(buffer, 0, bytesRecv);

           } while (bytesRecv > 0);

           socket.Close();

           file.Close();

       }

    }

 }

客户端

 　　　　private void SendFile(string path, string ip, int port)

        {

            IPEndPoint remoteEP = new IPEndPoint(IPAddress.Parse(ip), port); //构造结点

            Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

            try

            {

                socket.Connect(remoteEP);

            }

            catch

            {

                MessageBox.Show("对方不在");

            }

            if (socket.Connected)

            {

                FileStream fs = File.Open(path, FileMode.Open, FileAccess.Read);

                string fileName = fs.Name;

                int begin = fileName.LastIndexOf("\\");

                fileName = fileName.Substring(fileName.LastIndexOf("\\") + 1, fileName.Length - begin - 1);

                fileName += "#";

                //先把文件名发过去

                byte[] fileNameBuffer = new byte[1024];

                fileNameBuffer = Encoding.UTF8.GetBytes(fileName);

                socket.Send(fileNameBuffer, 0, fileNameBuffer.Length, SocketFlags.None);

                //再把文件内容发过去

                byte[] fileBuffer = new byte[1024];

                int bytesRead;

                int totalBytes = 0;

                try

                {

                    do

                    {

                        bytesRead = fs.Read(fileBuffer, 0, fileBuffer.Length);

                        socket.Send(fileBuffer, 0, bytesRead, SocketFlags.None);

                        totalBytes += bytesRead;

                    } while (bytesRead > 0);

                    MessageBox.Show("发送完毕");

                    fs.Close();

                    socket.Close();

                }

                catch

                {

                    MessageBox.Show("发送文件错误");

                }

            }

        }