【c#编程技术总结】Socket通信 Udp

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Udp是没有绝对的c/s观念的，只是为了方便设定了客户端，服务端。此篇是搭载Unity使用的。.Net下也可以

public class UdpManager : MonoBehaviour
{
    public Button server;
    public Button client;

    private Thread clientThread;
    private Thread serverThread;

    private Socket clientSocket;
    private Socket serverSocket;

    // 采用socket类，使用最基本的同步方法
    void Start()
    {
        server.onClick.AddListener(StartServer);
        client.onClick.AddListener(StartClient);
    }

    private void StartClient()
    {
        IPEndPoint ip = new IPEndPoint(IPAddress.Parse("192.168.10.99"), 7000);
        clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
        clientSocket.Bind(ip);
        Debug.Log("启动客户端");
        clientThread = new Thread(ClientThread);
        clientThread.Start();

    }
    public void ClientThread( )
    {
        IPEndPoint ip = new IPEndPoint(IPAddress.Parse("192.168.10.99"), 7001);
        try
        {
            while (true)
            {
                Thread.Sleep(100);

                string welcome = "我是客户端";
                Debug.Log("广播消息");
                var data = Encoding.UTF8.GetBytes(welcome);
                clientSocket.SendTo(data, data.Length, SocketFlags.None, ip);

                IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
                EndPoint Remote = sender;
                var recdata = new byte[2048];
                if (clientSocket.Available <= 0) continue;
                int recv = clientSocket.ReceiveFrom(recdata, ref Remote);
                Debug.Log(Encoding.UTF8.GetString(recdata, 0, recv)+ "from " + Remote.ToString());
            }
        }
        catch (Exception e)
        {
            Debug.Log(e.Message);
        }
     
        clientSocket.Close();
    }
    
    private void StartServer()
    {
        IPEndPoint ip = new IPEndPoint(IPAddress.Parse("192.168.10.99"), 7001);
        serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);

        serverSocket.Bind(ip);
       

        Debug.Log("启动服务器!");
        serverThread = new Thread(ServerThread);
        serverThread.Start();
    }

    public void ServerThread()
    {
        IPEndPoint sender = new IPEndPoint(IPAddress.Any, 7000);
        EndPoint Remote = sender;
       
        try
        {
            while (true)
            {
                if (serverSocket.Available <= 0) continue;
                byte[] data = new byte[2048];
                var  recv = serverSocket.ReceiveFrom(data, ref Remote);
                string recvStr = Encoding.UTF8.GetString(data, 0, recv);
                Debug.Log(recvStr+ " from " + Remote.ToString());

                //客户机连接成功后，发送信息
                string welcome = "我是服务器: ";
                serverSocket.SendTo(Encoding.UTF8.GetBytes(welcome), Remote);
            }
        }
        catch (Exception e)
        {
            Debug.Log(e.Message);
        }
    }
    private void OnDestroy()
    {
        if (clientThread!=null)
        {
            clientThread.Abort();
        }
        if (clientSocket!=null)
        {
            clientSocket.Close();
            clientSocket = null;
        }
        if (serverThread!=null)
        {
            serverThread.Abort();
        }
        if (serverSocket!=null)
        {
            serverSocket.Close();
            serverSocket = null;
        }
    }
}

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