C# socket 聊天室（含文件传输）

tcp 客户端 服务端 namespace Server{ public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void btnStart_Click(object sender, EventArgs e) { try { //当点击开始监听的时候 在服务器端创建一个负责监IP地址跟端口号的Socket Socket socketWatch = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); IPAddress ip = IPAddress.Any;//IPAddress.Parse(txtServer.Text); //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 { } } /// <summary> /// 等待客户端的连接 并且创建与之通信用的Socket /// </summary> /// Socket socketSend; void Listen(object o) { Socket socketWatch = o as Socket; //等待客户端的连接 并且创建一个负责通信的Socket while (true) { try { //负责跟客户端通信的Socket socketSend = socketWatch.Accept(); //将远程连接的客户端的IP地址和Socket存入集合中 dicSocket.Add(socketSend.RemoteEndPoint.ToString(), socketSend); //将远程连接的客户端的IP地址和端口号存储下拉框中 cboUsers.Items.Add(socketSend.RemoteEndPoint.ToString()); //192.168.11.78：连接成功 ShowMsg(socketSend.RemoteEndPoint.ToString() ":" "连接成功"); //开启 一个新线程不停的接受客户端发送过来的消息 Thread th = new Thread(Recive); th.IsBackground = true; th.Start(socketSend); } catch { } } } //将远程连接的客户端的IP地址和Socket存入集合中 Dictionary<string, Socket> dicSocket = new Dictionary<string, Socket>(); /// <summary> /// 服务器端不停的接受客户端发送过来的消息 /// </summary> /// <param name="o"></param> void Recive(object o) { Socket socketSend = o as Socket; while (true) { try { //客户端连接成功后，服务器应该接受客户端发来的消息 byte[] buffer = new byte[1024 * 1024 * 2]; //实际接受到的有效字节数 int r = socketSend.Receive(buffer); if (r == 0) { break; } string str = Encoding.UTF8.GetString(buffer, 0, r); ShowMsg(socketSend.RemoteEndPoint ":" str); } catch { } } } void ShowMsg(string str) { txtLog.AppendText(str "\r\n"); } private void Form1_Load(object sender, EventArgs e) { Control.CheckForIllegalCrossThreadCalls = false; } /// <summary> /// 服务器给客户端发送消息 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btnSend_Click(object sender, EventArgs e) { 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(); //buffer = list.ToArray();不可能 //获得用户在下拉框中选中的IP地址 string ip = cboUsers.SelectedItem.ToString(); dicSocket[ip].Send(newBuffer); // socketSend.Send(buffer); } /// <summary> /// 选择要发送的文件 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btnSelect_Click(object sender, EventArgs e) { OpenFileDialog ofd = new OpenFileDialog(); ofd.InitialDirectory = @"C:\Users\DELL\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(); dicSocket[cboUsers.SelectedItem.ToString()].Send(newBuffer, 0, r 1, SocketFlags.None); } } /// <summary> /// 发送震动 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btnZD_Click(object sender, EventArgs e) { byte[] buffer = new byte[1]; buffer[0] = 2; dicSocket[cboUsers.SelectedItem.ToString()].Send(buffer); } } }