Configure how VerneMQ handles certain aspects of MQTT Retry Interval Set the time in seconds after a QoS=1 or QoS=2 message has been sent that VerneMQ will wait before retrying when no response is received. Copy retry_interval = 20 This option default to 20 seconds. Inflight Messages This ...
client = new MqttClient(IPAddress.Parse(txtIP), int.Parse(txtPort), false, null); client.MqttMsgPublishReceived += Client_MqttMsgPublishReceived; client.MqttMsgSubscribed += Client_MqttMsgSubscribed; ; client.Connect(clientId, username, password); }); //订阅按钮监听事件 subscribe_btn.onClick...
mqttConnectOptions.setKeepAliveInterval 方法解析 1. 方法的作用 mqttConnectOptions.setKeepAliveInterval 方法用于设置MQTT客户端与服务器之间在没有数据交换时的心跳包发送间隔。这个机制用于保持客户端与MQTT服务器之间的连接活跃,防止因为长时间没有数据传输而导致的连接断开。
MqttClientOptionsaddEnabledSecureTransportProtocol(Stringprotocol) Add an enabled SSL/TLS protocols, appended to the ordered protocols. intgetAckTimeout() Gets the time in seconds after which the client stops waiting for a PUBACK, PUBREC or PUBCOMP packet from the server in response t...
mqttclient_ssloptions是一个用于设置MQTT客户端SSL连接选项的函数,在使用MQTT协议进行加密通信时非常有用。下面是mqttclient_ssloptions函数的原型: c void mqttclient_ssloptions(MQTTClient* client, const MQTTClient_SSLOptions* options); mqttclient_ssloptions函数接受两个参数:client和options。client参数是一个...
MQTT是一种轻量级的消息传输协议,常用于物联网设备间的通信。通过使用SSL(安全套接层)协议,可以确保通信的机密性和完整性。在本文中,我们将逐步回答关于mqttclient_ssloptions的C代码示例的问题,以帮助读者了解如何使用它进行安全通信。 首先,我们需要了解mqttclient_ssloptions是什么。mqttclient_ssloptions是一个结构...
MqttClientOptionsaddEnabledSecureTransportProtocol(Stringprotocol) Add an enabled SSL/TLS protocols, appended to the ordered protocols. intgetAckTimeout() Gets the time in seconds after which the client stops waiting for a PUBACK, PUBREC or PUBCOMP packet from the server in response t...
io.vertx.mqtt.MqttClientOptions public class MqttClientOptions extends NetClientOptions Represents options used by the MQTT client. Field Summary Fields Modifier and TypeField and Description static int DEFAULT_ACK_TIMEOUT static boolean DEFAULT_CLEAN_SESSION static String DEFAULT_HOST...
mqttclient_ssloptions函数允许用户定义SSL配置参数,以满足特定的安全需求。 以下是一个使用mqttclient_ssloptions的C代码示例: #include <stdio.h> #include <mqttclient.h> int main() { 创建MQTT客户端 MQTTClient client; 创建SSL选项对象 SSLOptions sslOptions; 设置SSL选项参数 sslOptions.cafile = "ca....
mqttclientoptions 参数 MQTT是一种轻量级的发布/订阅消息传输协议,广泛应用于物联网设备连接。在使用MQTT进行设备通信时,我们需要配置MQTT客户端选项。这些选项可以影响MQTT连接的性能、安全性以及其它方面。 **连接选项** * **主机名和端口**:这是最基本的连接选项,指定了MQTT服务器的地址和端口。 * **认证信息...