C#|C# Udp测试工具开发网络协议|网络|udp

1、软件UI测试界面

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2、创建Config.ini配置文件

[系统参数] 本地UDP地址=192.168.124.4 本地UDP端口=7788 目标控制器IP地址=192.168.124.255 目标控制器端口号=6666

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3、创建全局变量

IniFile ini = new IniFile("./Config.ini"); bool isUdpConnected = false; static Socket client; Thread threadRecv; string recv; string LocalIp = "192.168.1.25"; int LocalPort = 1000; string TargetIp = "192.168.1.255"; int TargetPort = 10000;

4、添加UdpForm_Load事件程序

private void UdpForm_Load(object sender, EventArgs e) { try {LocalIp = ini.IniReadValue("系统参数", "本地UDP地址"); LocalPort = int.Parse(ini.IniReadValue("系统参数", "本地UDP端口")); TargetIp = ini.IniReadValue("系统参数", "目标控制器IP地址"); TargetPort = int.Parse(ini.IniReadValue("系统参数", "目标控制器端口号")); txtLocalIp.Text = LocalIp; txtLocalPort.Text = LocalPort.ToString(); txtTargetIp.Text = TargetIp; txtTargetPort.Text = TargetPort.ToString(); client = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); client.Bind(new IPEndPoint(IPAddress.Parse(LocalIp), LocalPort)); Thread.Sleep(50); txtUdpState.Text = "本地Udp创建成功"; isUdpConnected = true; } catch { txtUdpState.Text = "本地Udp创建失败"; isUdpConnected = false; }threadRecv = new Thread(ReciveMsg); threadRecv.Start(); timer1.Start(); }

5、创建线程ReciveMsg()处理函数

/// /// 接收发送给本机ip对应端口号的数据报 /// void ReciveMsg() { while (true) { if(isUdpConnected) {EndPoint point = new IPEndPoint(IPAddress.Any, 0); //用来保存发送方的ip和端口号 byte[] buffer = new byte[1024]; int length = client.ReceiveFrom(buffer, ref point); //接收数据报 if(length>0) { //显示对方ip地址和端口号 string fromIp = point.ToString(); recv += fromIp; recv += "\r\n"; //显示发送时间 string sTime = DateTime.Now.ToString(); recv += sTime; recv += ":"; }recv += Encoding.UTF8.GetString(buffer, 0, length); recv += "\r\n"; /* EndPoint point = new IPEndPoint(IPAddress.Any, 0); //用来保存发送方的ip和端口号 byte[] buffer = new byte[1024]; int length = client.ReceiveFrom(buffer, ref point); //接收数据报 recv += Encoding.UTF8.GetString(buffer, 0, length); recv += "\r\n"; //txtReciv.Text += recv; */ }} }

6、添加btnSend_Click按钮事件程序

private void btnSend_Click(object sender, EventArgs e) { try { UdpSend(txtSend.Text, TargetIp, TargetPort); } catch {} }

7、封装UdpSend方法

/// /// 本地Udp对外单播 /// /// /// 【C#|C# Udp测试工具开发】 /// private void UdpSend(string strSend, string ip, int port) { try { if (isUdpConnected) { string targetIp = ip; //int targetPort = int.Parse(port); EndPoint point = new IPEndPoint(IPAddress.Parse(targetIp), port); string msg = strSend; client.SendTo(Encoding.UTF8.GetBytes(msg), point); } } catch { }}

8、关闭程序，关闭创建的所有线程