using System; |
using System.Collections.Generic; |
using System.ComponentModel; |
using System.Data; |
using System.Drawing; |
using System.Linq; |
using System.Net; |
using System.Net.Sockets; |
using System.Text; |
using System.Threading; |
using System.Threading.Tasks; |
using System.Windows.Forms; |
namespace MyWeiChert |
{ |
public partial class 服务端 : Form |
{ |
public 服务端() |
{ |
InitializeComponent(); |
//关闭对文本框的非法线程操作检查 |
TextBox.CheckForIllegalCrossThreadCalls = false ; |
} |
Thread threadWatch = null ; //负责监听客户端的线程 |
Socket socketWatch = null ; //负责监听客户端的套接字 |
private void btnServerConn_Click( object sender, EventArgs e) |
{ |
try |
{ |
//定义一个套接字用于监听客户端发来的信息 包含3个参数(IP4寻址协议,流式连接,TCP协议) |
socketWatch = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); |
//服务端发送信息 需要1个IP地址和端口号 |
IPAddress ipaddress = IPAddress.Parse(txtIP.Text.Trim()); //获取文本框输入的IP地址 |
//将IP地址和端口号绑定到网络节点endpoint上 |
IPEndPoint endpoint = new IPEndPoint(ipaddress, int .Parse(txtPORT.Text.Trim())); //获取文本框上输入的端口号 |
//监听绑定的网络节点 |
socketWatch.Bind(endpoint); |
//将套接字的监听队列长度限制为20 |
socketWatch.Listen(20); |
//创建一个监听线程 |
threadWatch = new Thread(WatchConnecting); |
//将窗体线程设置为与后台同步 |
threadWatch.IsBackground = true ; |
//启动线程 |
threadWatch.Start(); |
//启动线程后 txtMsg文本框显示相应提示 |
txtMsg.AppendText( "开始监听客户端传来的信息!" + "\r\n" ); |
} |
catch (Exception ex) |
{ |
MessageBox.Show(ex.ToString()); |
throw ; |
} |
} |
//创建一个负责和客户端通信的套接字 |
Socket socConnection = null ; |
/// <summary> |
/// 监听客户端发来的请求 |
/// </summary> |
private void WatchConnecting() |
{ |
while ( true ) //持续不断监听客户端发来的请求 |
{ |
socConnection = socketWatch.Accept(); |
txtMsg.AppendText( "客户端连接成功" + "\r\n" ); |
//创建一个通信线程 |
ParameterizedThreadStart pts = new ParameterizedThreadStart(ServerRecMsg); |
Thread thr = new Thread(pts); |
thr.IsBackground = true ; |
//启动线程 |
thr.Start(socConnection); |
} |
} |
/// <summary> |
/// 发送信息到客户端的方法 |
/// </summary> |
/// <param name="sendMsg">发送的字符串信息</param> |
private bool ServerSendMsg( string sendMsg) |
{ |
try |
{ |
//将输入的字符串转换成 机器可以识别的字节数组 |
byte [] arrSendMsg = Encoding.UTF8.GetBytes(sendMsg); |
//向客户端发送字节数组信息 |
socConnection.Send(arrSendMsg); |
//将发送的字符串信息附加到文本框txtMsg上 |
txtMsg.AppendText( "服务端:" + GetCurrentTime() + "\r\n" + sendMsg + "\r\n" ); |
return true ; |
} |
catch (Exception ex) |
{ |
MessageBox.Show(ex.ToString()); |
return false ; |
} |
} |
/// <summary> |
/// 接收客户端发来的信息 |
/// </summary> |
/// <param name="socketClientPara">客户端套接字对象</param> |
private void ServerRecMsg( object socketClientPara) |
{ |
Socket socketServer = socketClientPara as Socket; |
while ( true ) |
{ |
//创建一个内存缓冲区 其大小为1024*1024字节 即1M |
byte [] arrServerRecMsg = new byte [1024 * 1024]; |
//将接收到的信息存入到内存缓冲区,并返回其字节数组的长度 |
int length = socketServer.Receive(arrServerRecMsg); |
Dingding.Ding(); |
//将机器接受到的字节数组转换为人可以读懂的字符串 |
string strSRecMsg = Encoding.UTF8.GetString(arrServerRecMsg, 0, length); |
//将发送的字符串信息附加到文本框txtMsg上 |
txtMsg.AppendText( "客户端:" + GetCurrentTime() + "\r\n" + strSRecMsg + "\r\n" ); |
} |
} |
//发送信息到客户端 |
private void btnSendMsg_Click( object sender, EventArgs e) |
{ |
//调用 ServerSendMsg方法 发送信息到客户端 |
if (ServerSendMsg(txtSendMsg.Text.Trim())) |
{ |
txtSendMsg.Text = "" ; |
} |
} |
//快捷键 Enter 发送信息 |
private void txtSendMsg_KeyDown( object sender, KeyEventArgs e) |
{ |
//如果用户按下了Enter键 |
if (e.KeyCode == Keys.Enter) |
{ |
//则调用 服务器向客户端发送信息的方法 |
if (ServerSendMsg(txtSendMsg.Text.Trim())) |
{ |
txtSendMsg.Text = "" ; |
} |
} |
} |
/// <summary> |
/// 获取当前系统时间的方法 |
/// </summary> |
/// <returns>当前时间</returns> |
private DateTime GetCurrentTime() |
{ |
DateTime currentTime = new DateTime(); |
currentTime = DateTime.Now; |
return currentTime; |
} |
} |
} |