com.loocme.sys.udp.SocketClient Maven / Gradle / Ivy

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package com.loocme.sys.udp;

import lombok.extern.slf4j.Slf4j;

import java.io.IOException;
import java.net.*;

@Slf4j
public class SocketClient
{

    private static DatagramSocket priClient;
    private static byte[] priClientLock = new byte[1];

    public static void send(String ip, int port, byte[] data)
    {
        if (null == data || 0 == data.length)
        {
            return;
        }

        DatagramSocket client = getPriClient();
        if (null == client)
        {
            return;
        }

        try
        {
            DatagramPacket packet = new DatagramPacket(data, data.length, new InetSocketAddress(ip, port));
            client.send(packet);
        }
        catch (IOException e)
        {
            log.error("upd send data failed, the reason is : ", e);
        }
    }

    public static void broadcast(int port, byte[] data)
    {
        if (null == data || 0 == data.length)
        {
            return;
        }

        DatagramSocket client = getPriClient();
        if (null == client)
        {
            return;
        }

        try
        {
            DatagramPacket packet = new DatagramPacket(data, data.length, InetAddress.getByName("255.255.255.255"), port);
            client.send(packet);
        }
        catch (IOException e)
        {
            log.error("upd send data failed, the reason is : ", e);
        }
    }

    private static DatagramSocket getPriClient()
    {
        if (null != priClient)
        {
            return priClient;
        }

        synchronized (priClientLock)
        {
            if (null != priClient)
            {
                return priClient;
            }

            try
            {
                priClient = new DatagramSocket();
                log.info("start upd client .");
            }
            catch (SocketException e)
            {
                log.error("start upd client failed. the reason is : ", e);
                priClient = null;
            }
        }
        return priClient;
    }
}