MQTTAsync client; MQTTAsync_connectOptions conn_opts = MQTTAsync_connectOptions_initializer; MQTTAsync_token token; // 创建 MQTTAsync 客户端 MQTTAsync_create(&client, ADDRESS, CLIENTID, MQTTCLIENT_PERSISTENCE_NONE, NULL); // 设置连接参数 conn_opts.keepAliveInterval = 20; conn_opts....
MQTTAsync_connectOptions conn_opts = MQTTAsync_connectOptions_initializer; intrc; inttraceLevel = MQTTASYNC_TRACELEVEL_ERROR;// 设置跟踪级别为错误 // 初始化MQTTAsync库 MQTTAsync_create(&mqtt,"tcp://localhost:1883","clientId", MQTTCLIENT_PERSISTENCE_NONE,NULL); // 设置跟踪级别 mqttasync_settra...
{ MQTTAsync client; MQTTAsync_connectOptions conn_opts = MQTTAsync_connectOptions_initializer; int rc; // 创建 MQTT 客户端 MQTTAsync_create(&client, "tcp://mqtt.eclipseprojects.io:1883", "ClientID", MQTTCLIENT_PERSISTENCE_NONE, NULL); // 设置连接丢失、消息到达和消息传递完成的回调函数 ...
void connlost(void *context, char *cause) { MQTTAsync client = (MQTTAsync)context; MQTTAsync_connectOptions conn_opts = MQTTAsync_connectOptions_initializer; int rc; printf("\nConnection lost\n"); printf(" cause: %s\n", cause); printf("Reconnecting\n"); conn_opts.keepAliveInterval = 2...
Options_initializer { {'M, 'Q', 'T', 'C'}, 1, 60, 1, 10, NULL NULL, NULL, 30, 20, NULL, NULL } 633 654 DLLExport intMQTTAsync_connect(MQTTAsync handle MQTTconnectOptions* options); 655 656 657 typedef struct 658 { 660 char struct_id[4]; 662 int struct_...
pointer to an MQTTAsyncwillOptions * structure is passed in the MQTTAsync_connect structure used in the * MQTTAsync_connect) call that connectsthe client to the server. The pointer * to MQTTAsync_willOptions can be to NULL if the LWT function is not * required. */ ...
2>connect_options.cpp 2>create_options.cpp 2>disconnect_options.cpp 2>iclient_persistence.cpp 2>C:\Users\Usuario\Desktop\VDB\dependencias\paho.mqtt.cpp\src\iclient_persistence.cpp(113,14): warning C4267: '=': conversion from 'size_t' to 'int', possible loss of data ...
问管理要为MQTTAsync_sendMessage发送的数据EN今天的IT预算主要花在了“保持灯亮”上。事实上，大约70%...
默认用MQTTAsync_connectOptions_initializer初始化,使用5.0的时候将用MQTTAsync_connectOptions_initializer5进行初始化。其他的看下面的结构体内容解释。 typedefstruct{charstruct_id[4];//MQTC/** 这个参数必须是 0, 1, 2, 3 4 5 or 6. * 0 表示不使用SSL,也不使用serverURIs ...
c_str(), &pubmsg, nullptr); } int main() { MQTTAsync client; MQTTAsync_create(&client, "tcp://localhost:1883", "PeriodicPublisher", MQTTCLIENT_PERSISTENCE_NONE, NULL); MQTTAsync_connectOptions conn_opts = MQTTAsync_connectOptions_initializer; conn_opts.maxInflight = 1; MQTTAsync_connect...