初始化版本

SLC1-N/UDPBroadcast.cs

@@ -0,0 +1,83 @@
+using System;
+using System.Net;
+using System.Net.Sockets;
+using System.Text;
+using System.Threading;
+
+namespace SLC1_N
+{
+    class UDPBroadcast
+    {
+        //UDP广播获取仪器IP地址
+        private static Socket sock;
+        private static IPEndPoint iep1;
+        private static byte[] data;
+        Thread UDPlisten;
+
+        public string[] ch_ipaddress;
+        /// <summary>
+        /// UDP广播获取仪器IP地址
+        /// </summary>
+        public void UDP_Broadcast()
+        {
+            ch_ipaddress = new string[3];
+            string PrefixIP = new GetIP().GetLocalIP();
+            int IP_index = PrefixIP.LastIndexOf(".");
+            PrefixIP = PrefixIP.Remove(IP_index + 1);
+            PrefixIP += "255";
+
+            sock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
+            //255.255.255.255
+            //iep1 = new IPEndPoint(IPAddress.Broadcast, 9999);
+            IPAddress ip;
+            ip = IPAddress.Parse(PrefixIP);
+            iep1 = new IPEndPoint(ip, 9999);
+
+            string hostname = Dns.GetHostName();
+            data = Encoding.ASCII.GetBytes("hello,udp server");
+
+            sock.SetSocketOption(SocketOptionLevel.Socket,
+            SocketOptionName.Broadcast, 1);
+
+            UDPlisten = new Thread(UDP_Listening);
+            UDPlisten.Start();
+            sock.SendTo(data, iep1);
+
+        }
+        public void UDP_Listening()
+        {
+            while (true)
+            {
+                byte[] data = new byte[1024];
+                int recv = sock.Receive(data);
+                string RecvData = Encoding.ASCII.GetString(data, 0, recv);
+                string[] IPData = RecvData.Split('\n');
+                int ip_num = IPData.Length;
+                if (ip_num > 0)
+                {
+                    int i;
+                    for (i = 0; i < ip_num; i++)
+                    {
+                        string[] ipaddress = IPData[i].Split(':');
+                        int ch_station = Convert.ToInt32(ipaddress[0]);
+                        switch (ch_station)
+                        {
+                            case 1:
+                                ch_ipaddress[0] = ipaddress[1];
+                                break;
+                            case 2:
+                                ch_ipaddress[1] = ipaddress[1];
+                                break;
+                            case 3:
+                                ch_ipaddress[2] = ipaddress[1];
+                                break;
+                            case 4:
+                                ch_ipaddress[3] = ipaddress[1];
+                                break;
+                        }
+                    }
+                }
+            }
+        }
+    }
+}