/// <summary>
/// 发布实时数据
/// </summary>
private void PublicRealDataJson(IMqttClient MqttClient)
{
string clientid = MqttClient.Options.ClientId;
AddText("客户端发布数据 " + clientid);
if (clientid == null || clientid == "")
{
return;
}
try
{
if (MqttClient != null && MqttClient.IsConnected)
{
//构造一个对象
Random random = new Random();
for (int i = 0; i < MqttJson.Devices.Count; i++)
{
for (int p = 0; p < MqttJson.Devices[i].paras.Count; p++)
{
float v = random.Next(MqttJson.Devices[i].paras[p].SimulatorMin, MqttJson.Devices[i].paras[p].SimulatorMax);
string dateString = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
MqttJson.Devices[i].paras[p].data.Clear();
MqttJson.Devices[i].paras[p].data.Add(dateString); //日期
MqttJson.Devices[i].paras[p].data.Add(v.ToString()); //值
MqttJson.Devices[i].paras[p].data.Add("无"); //单位
}
string json = ScadaHexByteOperator.ObjectToJson(MqttJson.Devices[i]);
//发布订阅的数据
MqttClient.PublishAsync(new MqttApplicationMessage()
{
Payload = Encoding.UTF8.GetBytes(json),
QualityOfServiceLevel = MqttQualityOfServiceLevel,
Retain = false,
Topic = tbDataTopic.Text.Trim()
});
AddText(MqttJson.Devices[i].Name + " 发布了一条数据集合");
}
}
}
catch (Exception emx)
{
AddText(emx.Message);
return;
}
}
public void CreateMQTTClient()
{
for (int i = 0; i < MqttClients.Count; i++)
{
MqttClients[i].DisconnectAsync();
}
MqttClients.Clear();
MqttOptions.Clear();
for (int i = 0; i < MqttJson.Devices.Count; i++)
{
try
{
string cleintID = MqttJson.Devices[i].device.ClientID;
MqttClientOptions option = new MqttClientOptions()
{
ClientId = cleintID
};
option.ChannelOptions = new MqttClientTcpOptions()
{
Server = this.tbClientIP.Text.Trim(),
Port = Convert.ToInt32(this.tbPort.Text.Trim())
};
option.Credentials = new MqttClientCredentials()
{
Username = this.tbUser.Text.Trim(),
Password = this.tbPassword.Text.Trim()
};
option.CleanSession = true;
option.KeepAlivePeriod = TimeSpan.FromSeconds(float.Parse(tbPeried.Text.Trim()));
option.KeepAliveSendInterval = TimeSpan.FromSeconds(20000);
MqttOptions.Add(option);
IMqttClient MqttClient = new MqttFactory().CreateMqttClient();
///接收到数据
MqttClient.ApplicationMessageReceived += (sender, args) =>
{
if (args.ClientId == null || args.ClientId == "")
{
return;
}
if (args.ApplicationMessage.Payload == null || args.ApplicationMessage.Payload.Length <= 0)
{
return;
}
if (args.ApplicationMessage.Topic.Trim() == this.tbDataPassiveTopic.Text.Trim())
{
IMqttClient mqttClient = MqttClients.Find(x => x.Options.ClientId == args.ClientId);
Task.Run(() =>
{
///获取当前的json字符串
string json = args.ApplicationMessage.ConvertPayloadToString();
//将json对象转换为c#对象
MQTTPassiveSubTopicObject subTopicObject = ScadaHexByteOperator.JsonToObject <MQTTPassiveSubTopicObject>(json);
AddText("服务器请求发布数据");
if (subTopicObject != null)
{
PublicRealDataJson(mqttClient);//发布一次数据
}
});
}
else if (args.ApplicationMessage.Topic.Trim() == this.tbUpdateCycleTopic.Text.Trim())//用户上位机读取数据的间隔,是秒
{
Task.Run(() =>
{
///获取当前的json字符串
string json = args.ApplicationMessage.ConvertPayloadToString();
//将json对象转换为c#对象
MQTTPassiveSubTopicObject subTopicObject = ScadaHexByteOperator.JsonToObject <MQTTPassiveSubTopicObject>(json);
if (subTopicObject != null)
{
CommonMqttJsonObject device = MqttJson.Devices.Find(x => x.ClientID == args.ClientId);
if (device != null)
{
AddText("服务器循环周期更新 更新周期" + subTopicObject.updatecycle);
}
//修改客户端数据查询周期
device.device.UpdateCycle = subTopicObject.updatecycle;
}
});
}
else if (args.ApplicationMessage.Topic.Trim() == this.tbCommandTopic.Text.Trim())//用户上位机下置数据
{
//解析数据
AddText("服务器端下置一条数据");
}
};
MqttClient.Connected += (sender, args) =>
{
IMqttClient mqttClient = (IMqttClient)sender;
AddText("客户端与服务器连接正常");
MqttClient.SubscribeAsync(tbCommandTopic.Text, MqttQualityOfServiceLevel); //服务器端下置命令的主题
if (cbAuto.Checked) //一个被动订阅的主题
{
Task.Run(() =>
{
MqttClient.SubscribeAsync(tbUpdateCycleTopic.Text, MqttQualityOfServiceLevel); //服务器端设置了更新数据周期后通知到客户端
MqttClient.SubscribeAsync(tbDataPassiveTopic.Text, MqttQualityOfServiceLevel); //被动订阅循环主题
});
}
else//一个被动订阅的主题
{
Task.Run(() =>
{
while (true && mqttClient != null)
{
if (mqttClient.IsConnected)
{
PublicRealDataJson(mqttClient);
}
CommonMqttJsonObject device = MqttJson.Devices.Find(x => x.ClientID == mqttClient.Options.ClientId);
if (device != null)
{
Thread.Sleep(device.device.UpdateCycle);
}
}
});
}
};
MqttClient.Disconnected += async(sender, args) =>
{
AddText("客户端与服务器断开链接" + (args.Exception != null?args.Exception.Message:""));
};
MqttClients.Add(MqttClient);
}
catch (Exception emx)
{
return;
}
}
}