UDP同步通信

//1.创建套接字
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
//2.绑定本机地址
IPEndPoint ipPoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 8081);
socket.Bind(ipPoint);
Console.WriteLine("服务器开启");
//3.接受消息
byte[] bytes = new byte[512];
//这个变量主要是用来记录 谁发的信息给你 传入函数后 在内部 它会帮助我们进行赋值
EndPoint remoteIpPoint2 = new IPEndPoint(IPAddress.Any, 0);
int length = socket.ReceiveFrom(bytes, ref remoteIpPoint2);
Console.WriteLine("IP:" + (remoteIpPoint2 as IPEndPoint).Address.ToString() +
    "port:" + (remoteIpPoint2 as IPEndPoint).Port +
    "发来了" +
    Encoding.UTF8.GetString(bytes, 0, length));

//4.发送到指定目标
//由于我们先收 所以 我们已经知道谁发了消息给我 我直接发给它就行了
socket.SendTo(Encoding.UTF8.GetBytes("欢迎发送消息给服务器"), remoteIpPoint2);

//5.释放关闭
socket.Shutdown(SocketShutdown.Both);
socket.Close();

//1.创建套接字
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);

//2.绑定本机地址
IPEndPoint ipPoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 8080);
socket.Bind(ipPoint);

//3.发送到指定目标
IPEndPoint remoteIpPoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 8081);
//指定要发送的字节数 和 远程计算机的 IP和端口
socket.SendTo(Encoding.UTF8.GetBytes("唐老狮来了"), remoteIpPoint);

//4.接受消息
byte[] bytes = new byte[512];
//这个变量主要是用来记录 谁发的信息给你 传入函数后 在内部 它会帮助我们进行赋值
EndPoint remoteIpPoint2 = new IPEndPoint(IPAddress.Any, 0);
int length = socket.ReceiveFrom(bytes, ref remoteIpPoint2);
print("IP:" + (remoteIpPoint2 as IPEndPoint).Address.ToString() +
    "port:" + (remoteIpPoint2 as IPEndPoint).Port +
    "发来了" +
    Encoding.UTF8.GetString(bytes, 0, length));

//5.释放关闭
socket.Shutdown(SocketShutdown.Both);
socket.Close();