针对你提出的“mqtt client is not connected”的问题,这里有几个可能的解决方案和检查点,帮助你排查和解决问题: 检查MQTT客户端的配置信息是否正确: 确保你使用的MQTT客户端库与MQTT服务器的版本兼容。 检查客户端的端口号、主机地址等配置是否正确。 确认MQTT服务器是否运行正常,网络连接是否畅通: 尝试使用命令行...
It is sent by the telemetry (MQXR) service, if it detects the connection to the client has broken without the client requesting it. A client can publish a retained publication at any time; see Retained publications and MQTT clients. A new subscription to a topic can request to be sent ...
It is sent by the telemetry (MQXR) service, if it detects the connection to the client has broken without the client requesting it. A client can publish a retained publication at any time; see Retained publications and MQTT clients. A new subscription to a topic can request to be sent ...
Mqtt5Client should connect with specified protocol version Actual behavior com.hivemq.client.mqtt.exceptions.ConnectionFailedException: java.lang.IllegalArgumentException: Protocol TLSv1.2 is not supported. To Reproduce Steps mqttClientBuilder.sslConfig() .protocols(Collections.singletonList(TlsVersion.TLS_1...
When I try to build the client: application = client.buildApplication(applicationId).build(); I get this exception: org.eclipse.paho.client.mqttv3.MqttException: Client is not connected at org.eclipse.paho.client.mqttv3.internal.Exceptio...
重启sshd服务，导致ssh连接不上服务器，经过排查，查看日志发现出现一下错误 Oct 25 12:59:00 kdg...
3657 org.eclipse.paho.mqttv5.common.MqttException: Client is not connected 所有设备都是报这个喔。webhook地址是正确的,一直在用,另外会告警high_system_memory_usage,会不会是这个原因呢? 就是所有客户端频繁断开。blankalupo 2023 年3 月 27 日 02:58 5 high_system_memory_usage 只是内存使用量的一个...
之前的文章中我也有介绍mqtt,这次遇到一个问题,让我百思不得其解,由于之前在我的调试之下解决了问题,主要是部署在服务器上的mqttServer用的clientid和我本地测试用的代码用的clientid重复了,后来纠正后可以正常使用了,但是最近又不能用了,想想哪里肯定又又设置问题了。
确认过用户名、密码和Client ID无误,问题仍未解决,期待回复! 测试是使用的MQTTX工具,通过AccessKey生成对应Client ID的用户名和密码。配置公网接入点和端口1883,点击连接报错。工具截图如下: 用户名和密码、Client ID等都检查了,无法解决,盼复!!!
MQTTAsync_connectOptions connOpts = MQTTAsync_connectOptions_initializer; void onConnectLost(void * context, char * cause) { (*Disconnected)(); MQTTAsync client = (MQTTAsync)context; fprintf(stderr, "\nMQTT connection lost\n"); if (cause) fprintf(stderr, "\t\tcause: %s\n", cause);...