一、说明 环境: Windows 7 旗舰版 Visual Studio 2013 CMake version 3.19.8 paho.mqtt.c V1.3.13 二、报错 MQTTClient_message::MQTTClient_message”: 没有重载函数接受 9 个参数 三、解决方法 MQTTClient_message MQTT_Pubmsg = MQTTClient_message_initializer; 上面这行代码放错地方,上面是放到了.h头文...
MQTTClient_connectOptions conn_opts = MQTTClient_connectOptions_initializer; MQTTClient_message pubmsg = MQTTClient_message_initializer; MQTTClient_deliveryToken token;intrc; MQTTClient_create(&client, ADDRESS, CLIENTID, MQTTCLIENT_PERSISTENCE_NONE, NULL); conn_opts.keepAliveInterval =20; conn_opts....
//初始化MQTT Client选项 MQTTClient_connectOptions conn_opts = MQTTClient_connectOptions_initializer; //#define MQTTClient_message_initializer { {'M', 'Q', 'T', 'M'}, 0, 0, NULL, 0, 0, 0, 0 } MQTTClient_message pubmsg = MQTTClient_message_initializer; //声明消息token MQTTClient_de...
//初始化客户端选项 conn_opts MQTTClient_connectOptions conn_opts = MQTTClient_connectOptions_initializer; //消息初始化 pubmsg MQTTClient_message pubmsg = MQTTClient_message_initializer; MQTTClient_deliveryToken token; int rc; char *username = "test"; char *password = "test"; if ((rc = MQT...
MQTTClient client;MQTTClient_connectOptionsconn_opts=MQTTClient_connectOptions_initializer;MQTTClient_messagepubmsg=MQTTClient_message_initializer; MQTTClient_deliveryToken token; AI代码助手复制代码 4. 核心功能实现 4.1 建立连接 intrc;if((rc = MQTTClient_create(&client, ADDRESS, CLIENTID, ...
intrc;MQTTClientclient;MQTTClient_create(&client,ADDRESS,CLIENTID,0,NULL);MQTTClient_connectOptionsconn_opts=MQTTClient_connectOptions_initializer;conn_opts.username=USERNAME;conn_opts.password=PASSWORD;MQTTClient_setCallbacks(client,NULL,NULL,on_message,NULL);if((rc=MQTTClient_connect(client,&conn_...
int MQTTSubscribe(Client*c, const char*topicFilter, enum QoS qos, messageHandler messageHandler) 描述 向MQTT服务器订阅主题 参数 c:Client结构体指针; topicFilter:订阅的主题; qos:订阅的服务质量等级; messageHandler:接收回调,当订阅的主题有信息下发时,在这里接收; ...
#define QOS 1 #define TIMEOUT 10000L int main(int argc, char* argv[]) { MQTTClient client; MQTTClient_connectOptions conn_opts = MQTTClient_connectOptions_initializer; MQTTClient_message pubmsg = MQTTClient_message_initializer; MQTTClient_deliveryToken token; int rc; MQTTClient_create(&client...
message; 214 215#defineMQTTAsync_message_initializer{ {'M', 'Q', 'T' 'M'}, 0, 0, NULL, 0 0, 0, 0 } 216 243typedef intMQTTAsync_messageArrivedvoid* context char* topic, int topicLen, MQTTmessage* message); 244 263 typedef void MQTTAsync_deliveryComplete(void* ...
{ /* MQTT Client initialization */ MQTTClient client; MQTTClient_connectOptions conn_opts = MQTTClient_connectOptions_initializer; MQTTClient_message pubmsg = MQTTClient_message_initializer; MQTTClient_deliveryToken token; int rc; //status code received from broker rc = MQTTClient_create(&client,...