c#Socket通信基本使用
基本流程
Server
private void btnStart_Click(object sender, EventArgs e) { try { //当点击开始监听时在服务器端创建一个负责监视IP地址和端口号的socket Socket socketWatch = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); IPAddress ip = IPAddress.Any; //创建端口号对象 IPEndPoint point = new IPEndPoint(ip, Convert.ToInt32(txtPort.Text)); //监听 socketWatch.Bind(point); ShowMsg("监听成功"); socketWatch.Listen(10); Thread th = new Thread(Listen); th.IsBackground = true; th.Start(socketWatch); } catch { } } void ShowMsg(string str) { txtLog.AppendText(str + "\r\n"); } Socket socketSend; void Listen(object o) { Socket socketWatch = o as Socket; //等待客户端连接且创建一个负责通讯的socket while (true) { try { //负责跟客户端通讯的socket 怎么存它？--下拉框 socketSend = socketWatch.Accept(); //将远程连接的客户端的(ip地址+端口号)和socket存入集合 disSocket.Add(socketSend.RemoteEndPoint.ToString(), socketSend); //将远程连接的客户端的(ip地址+端口号)和socket存入下拉框中 cboUsers.Items.Add(socketSend.RemoteEndPoint.ToString()); //例192.168.1.1:连接成功 ShowMsg(socketSend.RemoteEndPoint.ToString() + ":" + "连接成功"); //开启一个新线程不停的接收客户端法发来的消息 Thread th = new Thread(Receive); th.IsBackground = true; th.Start(socketSend); } catch { } } } //将远程连接的客户端的(ip地址+端口号)和socket存入集合 Dictionary<string, Socket> disSocket = new Dictionary<string, Socket>(); void Receive(object o)//服务器不停的接收客户端发来的消息 { Socket socketSend = o as Socket; while (true) { try { //客户端连接成功后 服务器接收客户端发送的消息 byte[] buffer = new byte[1024 * 1024 * 2]; //实际接收到的有效字节数 int r = socketSend.Receive(buffer); if (r == 0) { break; } string str = Encoding.UTF8.GetString(buffer, 0, r); ShowMsg(socketSend.RemoteEndPoint + ":" + str); } catch { } } } private void Form1_Load(object sender, EventArgs e) { Control.CheckForIllegalCrossThreadCalls = false; } //服务器给客户端发送消息 private void btnSend_Click(object sender, EventArgs e) { try { string str = txtMsg.Text; byte[] buffer = System.Text.Encoding.UTF8.GetBytes(str); List<byte> list = new List<byte>(); list.Add(0); list.AddRange(buffer); //将泛型集合转换为数组 byte[] newBuffer = list.ToArray(); //socketSend.Send(buffer); //获得用户在下拉框中选中的IP地址 string ip = cboUsers.SelectedItem.ToString(); disSocket[ip].Send(newBuffer); } catch { } } //选择要发送的文件 private void btnSelect_Click(object sender, EventArgs e) { OpenFileDialog ofd = new OpenFileDialog(); ofd.InitialDirectory = @"C:\Users\xu.huang\Desktop"; ofd.Title = "请选择要发送的文件"; ofd.Filter = "所有文件|*.*"; ofd.ShowDialog(); txtPath.Text = ofd.FileName; } private void btnSendFile_Click(object sender, EventArgs e) { //获得要发送的文件的路径 string path = txtPath.Text; using (FileStream fsRead = new FileStream(path, FileMode.Open, FileAccess.Read)) { byte[] buffer = new byte[1024 * 1024 * 5]; int r = fsRead.Read(buffer, 0, buffer.Length); List<byte> list = new List<byte>(); list.Add(1); list.AddRange(buffer); byte[] newBuffer = list.ToArray(); disSocket[cboUsers.SelectedItem.ToString()].Send(newBuffer, 0, r + 1, SocketFlags.None); } } private void btnZd_Click(object sender, EventArgs e) { try { byte[] buffer = new byte[1]; buffer[0] = 2; disSocket[cboUsers.SelectedItem.ToString()].Send(buffer); } catch { } }
Client
Socket socketSend; private void btnStart_Click(object sender, EventArgs e) { try { //创建负责通信的Socket socketSend = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); //拿到本机ip地址及端口号 IPAddress ip = IPAddress.Parse(txtServer.Text); IPEndPoint point = new IPEndPoint(ip, Convert.ToInt32(txtPort.Text)); //获得要连接的服务器的ip地址及端口号 socketSend.Connect(point); ShowMsg("连接成功"); //开启一个新线程不停的接收服务器发来的消息 Thread th = new Thread(Receive); th.IsBackground = true; th.Start(); } catch { } } void ShowMsg(string str) { txtLog.AppendText(str + "\r\n"); } //不停的接收服务器发来的消息 void Receive() { while (true) { try { byte[] buffer = new byte[1024 * 1024 * 3]; //实际接收到的字节数 int r = socketSend.Receive(buffer);//--拿出来的哦~ if (r == 0)//--拿出来的哦~ { break; } if (buffer[0] == 0) { string s = Encoding.UTF8.GetString(buffer, 1, r - 1); ShowMsg(socketSend.RemoteEndPoint + ":" + s); } else if (buffer[0] == 1) { SaveFileDialog sfd = new SaveFileDialog(); sfd.InitialDirectory = @"C:\Users\xu.huang\Desktop"; sfd.Title = "请选择要保存的文件"; sfd.Filter = "所有文件|*.*"; sfd.ShowDialog(this); string path = sfd.FileName; using (FileStream fsWrite = new FileStream(path, FileMode.OpenOrCreate, FileAccess.Write)) { fsWrite.Write(buffer, 1, r - 1); } MessageBox.Show("保存成功"); } else if (buffer[0] == 2) { Zd(); } } catch { } } } //客户端给服务器发送消息 private void btnSend_Click(object sender, EventArgs e) { string str = txtMsg.Text; byte[] buffer = System.Text.Encoding.UTF8.GetBytes(str); socketSend.Send(buffer); } //取消跨线程检查 private void Form1_Load(object sender, EventArgs e) { Control.CheckForIllegalCrossThreadCalls = false; } //震动 void Zd() { for (int i = 0; i < 500; i++) { this.Location = new Point(200, 200); this.Location = new Point(300, 300); } }
