winform:用Socket下传文件

[IceCoffee503]

主要是把服务器上的文件传到客户端，其中文件包括视频、音频、Flash等各种文件。

[kkun_3yue3]

[Quote=引用楼主 lizeqin503 的帖子:]
主要是把服务器上的文件传到客户端，其中文件包括视频、音频、Flash等各种文件。
[/Quote]


先建立连接
客户端侦听
服务器端将要发送的文件读取进来
循环发送
客户端接收，
生成本地文件

[kkun_3yue3]

客户端建立侦听

private void BeginService_Click(object sender, EventArgs e) {
            try {
                this.btnBegin.Enabled = false;
                Socket listen = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                listen.Bind(server_ip);
                listen.Listen(LISTEN_NUM);
                listen.BeginAccept(new AsyncCallback(OnConnectRequest), listen);
            } catch (Exception) {
                return;
            }
        }

服务器端与客户端建立连接

Socket client;
private void 连接服务器ToolStripMenuItem_Click(object sender, EventArgs e) {
            try {
                client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                client.Blocking = false;
                client.BeginConnect(clientInfo.ServerIPEndPoint, new AsyncCallback(OnConnect), client);
            } catch (Exception exp) {
                throw exp;
            }
        }

服务器端将要发送的文件读取进来
//代码仅做演示，实际开发中要考虑很多问题，这里仅供参考

FileStream fs = new FileStream("c:\\1.xls", FileMode.Open);
            if (fs != null) {
                byte[] _buffer=new byte[int.MaxValue];
                int i = fs.Read(_buffer, 0, (int)fs.Length);
            }

循环发送
...

生成文件地文件参考〔服务器端将要发送的文件读取进来〕

[IceCoffee503]

OnConnect
OnConnectRequest
这两个是什么意思呀

[kkun_3yue3]

//连接上服务器后,准备接收消息
        public void OnConnect(IAsyncResult ar) {
            Socket sock = (Socket)ar.AsyncState;

            try {
                if (sock.Connected) {
                    string _Command = string.Format("Login|{0}|{1}|{2}", clientInfo.UserName, clientInfo.UserName, clientInfo.UserName);
                    byte[] _bCommand = Encoding.Unicode.GetBytes(_Command);
                    client.Send(_bCommand);

                    AsyncCallback recieveData = new AsyncCallback(OnRecievedData);
                    sock.BeginReceive(msgBuff, 0, msgBuff.Length, SocketFlags.None, recieveData, sock);
                } 
            } catch (Exception ex) {
                throw ex;
            }
        }

//开始侦听
        public void OnConnectRequest(IAsyncResult ar) {
            Socket listener = ar.AsyncState as Socket;
            client = listener.EndAccept(ar);

            client.BeginReceive(msgBuff, 0, msgBuff.Length, SocketFlags.None, new AsyncCallback(OnRecievedData), client);
            listener.BeginAccept(new AsyncCallback(OnConnectRequest), listener);
        }

[kkun_3yue3]

//接收数据
        public void OnRecievedData(IAsyncResult ar) {
            Socket listener = ar.AsyncState as Socket;
            try {
                int nBytesRec = listener.EndReceive(ar);

                if (nBytesRec > 0) {
                    //byte ==> string
                    string sRecieved = Encoding.Unicode.GetString(msgBuff, 0, nBytesRec);

                    //处理来自客户端的消息 
                    ProcessMessage(listener, sRecieved);

                    //注册消息回调函数
                    SetupRecieveCallback(listener);

                    //listener.Send(Encoding.Unicode.GetBytes(string.Format("Begin|kkun|kkun|{0}", user_list.Count <= 1)));
                } else {
                    this.Invoke(new Action<IPEndPoint>(Tstring_User_Remove), listener.RemoteEndPoint);
                    this.Invoke(new Action<string>(Tstring_Info), string.Format("disconnect from server {0}", listener.RemoteEndPoint));
                    listener.Shutdown(SocketShutdown.Both);
                    listener.Close();
                    //continue;
                }
            } catch(Exception exp) {
                this.Invoke(new Action<IPEndPoint>(Tstring_User_Remove), listener.RemoteEndPoint);
                this.Invoke(new Action<string>(Tstring_Info), string.Format("disconnect from server {0}", listener.RemoteEndPoint));
                this.Invoke(new Action<string>(Tstring_Info), string.Format("disconnect from server {0}", exp.Message));
                listener.Shutdown(SocketShutdown.Both);
                listener.Close();
            }
        }

[IceCoffee503]

谢谢，我先看看

[IceCoffee503]

这几天忙的写代码，都忘了给分了，谢谢你的思路！
我已经做出来了！