mqtt向android推送消息（一）——发送端使用.net

使用.net进行mqtt协议通讯，主要是为了开发居于mqtt协议向android推送消息，使用.net开发可以参考mqtt.org上面的库，我用的是M2MQTT，网上资料很少，具体例子如下：
一、消息发布：

if (this.sender == null)            {                this.sender = new MqttClient(IPAddress.Parse(host), 1883);                //var mqttClient = new MqttClient("localhost");                this.sender.Connect("sender");            }            this.sender.Publish("mobileGKTopic", System.Text.Encoding.Default.GetBytes(textBox2.Text));

二、消息接收

 mqttClient = new MqttClient(IPAddress.Parse(host), 1883);            //mqttClient = new MqttClient("localhost");            mqttClient.Connect("Receiver");            mqttClient.MqttMsgPublishReceived += new MqttClient.MqttMsgPublishEventHandler(mqttClient_MqttMsgPublishReceived);                        mqttClient.Subscribe(new string[] { "testTopic" }, new byte[] { MqttMsgBase.QOS_LEVEL_AT_LEAST_ONCE });private void mqttClient_MqttMsgPublishReceived(object sender, uPLibrary.Networking.M2Mqtt.Messages.MqttMsgPublishEventArgs e)        {            //throw new NotImplementedException();            var msg = System.Text.Encoding.Default.GetString(e.Message);            if (!String.IsNullOrEmpty(msg))            {                textBox1.AppendText(Environment.NewLine);                textBox1.AppendText(msg);            }        }

需要注意的是，编译mqtt库时要把条件编译SSL关闭，SSL的编译我还没有高清。
mqtt向android推送消息（一）——发送端使用.net_第1张图片

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