一些测试过可以在国内使用的免费的MQTT服务器的host和ipport

测试使用的Json

{"你好":"我是发送的消息哦"}

{"Name":"尼桑","Age":223,"Height":176.0,"Width":130.0,"Sex":false,"_scoreDic":{"数学":"123","英语":"23","语文":"3"},"_dateList":["2022-08-13T00:00:00+08:00","2022-08-13T22:15:57.5702248+08:00"],"child":{"ChildName":"GTR","ChlidAge":"12","strList":["chld1","chld2"]}}

     class TestJsonItem
    {
        public  string Name="尼桑";
        public int Age=223;
        public float Height=176;
        public float Width=130;
        public bool Sex=false;

        public Dictionary<string, string> _scoreDic=new Dictionary<string, string>();
        public List<DateTime> _dateList=new List<DateTime>();
        public TestJsonItemChild child=new TestJsonItemChild();
    }

    public  class TestJsonItemChild
    {
        public string ChildName="GTR";
        public string ChlidAge="12";
        public List<string> strList=new List<string>();
    }

//接收消息
	void client_MqttMsgPublishReceived(object sender, MqttMsgPublishEventArgs e) 
	{
        Debug.Log("Received: " + System.Text.Encoding.UTF8.GetString(e.Message)  );
	} 

//发送
			client.Publish(top1, System.Text.Encoding.UTF8.GetBytes("Sending from Unity3D!!!"), MqttMsgBase.QOS_LEVEL_EXACTLY_ONCE, true);