mqtt协议里并没有messageId的说法，但是你mqtt发的消息，可以根据完整topic+发送端clientId+发送的分钟级...
sorry for that, but it has happened to me several times that MqttClient.PublishAsync(...) throws an MQTTnet.Exceptions.MqttCommunicationException exception with message "The client is not connected.", but a check on MqttClient.IsConnected before calling PublishAsync() returns true, which odd....
mqtt-client::InvalidMessageException: The data provided in the message stream was not a valid MQTT Message, exception is Exception: mqtt_client::MQTTEncoding: The input string has extended UTF characters, which are not supported, bytestream is null or empty That said version 3.1.1 does seem to...
mqtt协议里并没有messageId的说法，但是你mqtt发的消息，可以根据完整topic+发送端clientId+发送的分钟级...
It uses lwIP's MQTT client and mbedtls to connect to a broker and transmit a message to a topic. Important note about SNI Some cloud providers (e.g. AWS) require that SNI be enabled on the client. There does not appear to be a way to configure lwip's MQTT app client to set up ...
sorry for that, but it has happened to me several times that MqttClient.PublishAsync(...) throws an MQTTnet.Exceptions.MqttCommunicationException exception with message "The client is not connected.", but a check on MqttClient.IsConnected before calling PublishAsync() returns true, which odd....