UDP发送和接收

public bool udpSend(string ip, int port, byte[] data)
{
    Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
    IPAddress ipaddress = IPAddress.Parse(ip);
    IPEndPoint ipendpoint = new IPEndPoint(ipaddress, port);
    socket.SendTo(data, ipendpoint);
    socket.Close();
    return true;
}

int port = 8001;
UdpClient udp_client = new UdpClient(port);
IPEndPoint ip_endpoint = new IPEndPoint(IPAddress.Any, port);
while (true)
{
    byte[] data = udp_client.Receive(ref ip_endpoint);
}