/// <summary>
/// 发送消息到远程端并等待返回
/// </summary>
/// <param name="topic">主题</param>
/// <param name="api">api</param>
/// <param name="body">内容</param>
/// <exception cref="TimeoutException"></exception>
/// <returns></returns>
public static async Task <Message> SendAsync(SingleTopic topic, Api api, ITimeoutRequest body)
{
var message = EmqttdClient.GenerateMessage(api, body, Mode.Send);
var key = message.GetUniqueKey(topic.UniqueId);
var timeout = TimeSpan.FromSeconds(body.Timeout);
var taskSetter = taskTable.Create <Message>(key, timeout);
await EmqttdClient.PublishAsync(topic, message);
return(await taskSetter.GetTask());
}
/// <summary>
/// 初始化mqtt客户端
/// </summary>
/// <returns></returns>
private async static Task InitMqttClientAsync()
{
using (await asyncRoot.LockAsync())
{
if (_mqttClientInstance != null)
{
return;
}
var userName = EmqttdClient.GetSubAccout();
var password = config.Subscribe.Password;
await MqttAcl.AuthAclAsync(userName, password);
await MqttAcl.AuthAclAsync(config.Publish.Account, config.Publish.Password);
_mqttClientInstance = new MqttClient(config.Subscribe.Address, userName);
_mqttClientInstance.OnMessageArrived += EmqttdClient.OnMqttClientReturn;
_mqttClientInstance.OnConnectionLost += mqttClient_OnConnectionLost;
var option = new ConnectOption
{
Username = userName,
Password = password,
};
try
{
Logger.Info("IIS_MQTT", "Connect " + option.ToDebugString());
await _mqttClientInstance.ConnectAsync(option);
Logger.Info("IIS_MQTT", "Connect OK ...");
await _mqttClientInstance.SubscribeAsync(mqTopic, MqttQoS.ExactlyOnce);
}
catch (Exception ex)
{
Logger.Error("IIS_MQTT", ex.ToString());
Logger.Exception(ex);
throw ex;
}
}
}
/// <summary>
/// 回复消息到远程端
/// </summary>
/// <param name="topic">主题</param>
/// <param name="api">api</param>
/// <param name="body">内容</param>
/// <returns></returns>
public static async Task ReturnAsync(SingleTopic topic, Api api, object body)
{
var message = GenerateMessage(api, body, Mode.Return);
await EmqttdClient.PublishAsync(topic, message);
}
/// <summary>
/// 投递消息到远程端
/// </summary>
/// <param name="topic">主题</param>
/// <param name="api">api</param>
/// <param name="body">内容</param>
/// <returns></returns>
public static async Task PostAsync(Topic topic, Api api, object body)
{
var message = EmqttdClient.GenerateMessage(api, body, Mode.Post);
await EmqttdClient.PublishAsync(topic, message);
}
