int main(int argc, char* argv[]) { int packet_length; uint16_t msg_id, msg_id_rcv; mqtt_broker_handle_t broker; mqtt_init(&broker, "sancho"); mqtt_init_auth(&broker, "quijote", "rocinante"); init_socket(&broker, "192.168.10.40", 1883, keepalive); // >>>>> CONNECT mqtt_connect(&broker); // <<<<< CONNACK packet_length = read_packet(1); if(packet_length < 0) { fprintf(stderr, "Error(%d) on read packet!\n", packet_length); return -1; } if(MQTTParseMessageType(packet_buffer) != MQTT_MSG_CONNACK) { fprintf(stderr, "CONNACK expected!\n"); return -2; } if(packet_buffer[3] != 0x00) { fprintf(stderr, "CONNACK failed!\n"); return -2; } // >>>>> PUBLISH QoS 0 printf("Publish: QoS 0\n"); mqtt_publish(&broker, "public/myexample/example", "Test libemqtt message.", 0); // >>>>> PUBLISH QoS 1 printf("Publish: QoS 1\n"); mqtt_publish_with_qos(&broker, "hello/emqtt", "Example: QoS 1", 0, 1, &msg_id); // <<<<< PUBACK packet_length = read_packet(1); if(packet_length < 0) { fprintf(stderr, "Error(%d) on read packet!\n", packet_length); return -1; } if(MQTTParseMessageType(packet_buffer) != MQTT_MSG_PUBACK) { fprintf(stderr, "PUBACK expected!\n"); return -2; } MQTTParseMessageId(packet_buffer, msg_id_rcv); if(msg_id != msg_id_rcv) { fprintf(stderr, "%d message id was expected, but %d message id was found!\n", msg_id, msg_id_rcv); return -3; } // >>>>> PUBLISH QoS 2 printf("Publish: QoS 2\n"); mqtt_publish_with_qos(&broker, "hello/emqtt", "Example: QoS 2", 1, 2, &msg_id); // Retain // <<<<< PUBREC packet_length = read_packet(1); if(packet_length < 0) { fprintf(stderr, "Error(%d) on read packet!\n", packet_length); return -1; } if(MQTTParseMessageType(packet_buffer) != MQTT_MSG_PUBREC) { fprintf(stderr, "PUBREC expected!\n"); return -2; } MQTTParseMessageId(packet_buffer, msg_id_rcv); if(msg_id != msg_id_rcv) { fprintf(stderr, "%d message id was expected, but %d message id was found!\n", msg_id, msg_id_rcv); return -3; } // >>>>> PUBREL mqtt_pubrel(&broker, msg_id); // <<<<< PUBCOMP packet_length = read_packet(1); if(packet_length < 0) { fprintf(stderr, "Error(%d) on read packet!\n", packet_length); return -1; } if(MQTTParseMessageType(packet_buffer) != MQTT_MSG_PUBCOMP) { fprintf(stderr, "PUBCOMP expected!\n"); return -2; } MQTTParseMessageId(packet_buffer, msg_id_rcv); if(msg_id != msg_id_rcv) { fprintf(stderr, "%d message id was expected, but %d message id was found!\n", msg_id, msg_id_rcv); return -3; } // >>>>> DISCONNECT mqtt_disconnect(&broker); close_socket(&broker); return 0; }
void app_parse_mqttmsg(uint8_t *packet_buffer) { uint8_t msg_type = 0; uint16_t msg_id_rcv = 0; char topic_name[56]={0}; char msg[128]={0}; msg_type = MQTTParseMessageType(packet_buffer); //printf("-----> parse:0x%02X\n", msg_type); switch(msg_type) { case MQTT_MSG_CONNACK: if(packet_buffer[3] == 0) { printf("Mqtt login server success\n"); /* subscribe */ init_topic(&g_sub_topic, sub_topic_name, sizeof(sub_topic_name)); mqtt_subscribe(&g_stMQTTBroker, g_sub_topic->name, &(g_sub_topic->msg_id)); /* publish msg with Qos 0 */ //step1:>>>publish init_topic(&g_pub_topic1, pub_topic_name1, sizeof(pub_topic_name1)); mqtt_publish(&g_stMQTTBroker, g_pub_topic1->name, pub_msg1, 0); printf("APP publish msg[%s] with Qos 0\n", pub_msg1); deinit_topic(&g_pub_topic1); /* publish msg with Qos 1 */ //step1:>>>publish //step2:<<<puback init_topic(&g_pub_topic2, pub_topic_name2, sizeof(pub_topic_name2)); mqtt_publish_with_qos(&g_stMQTTBroker, g_pub_topic2->name, pub_msg2, 0, 1, &(g_pub_topic2->msg_id)); } else printf("Mqtt login server fail!\n"); break; case MQTT_MSG_SUBACK: msg_id_rcv = mqtt_parse_msg_id(packet_buffer); if(g_sub_topic && msg_id_rcv == g_sub_topic->msg_id) printf("Subcribe topic[%s] success\n", g_sub_topic->name); break; case MQTT_MSG_PUBLISH: mqtt_parse_pub_topic(packet_buffer, topic_name); mqtt_parse_publish_msg(packet_buffer, msg); printf("****** Topic[%s] recv msg: *****\n%s\n",topic_name, msg); /* unsubscribe */ if(!strcmp(g_sub_topic->name, topic_name)) mqtt_unsubscribe(&g_stMQTTBroker, g_sub_topic->name, &(g_sub_topic->msg_id)); break; case MQTT_MSG_UNSUBACK: msg_id_rcv = mqtt_parse_msg_id(packet_buffer); if(g_sub_topic && msg_id_rcv == g_sub_topic->msg_id) { printf("Unsubcribe topic[%s] success\n", g_sub_topic->name); deinit_topic(&g_sub_topic); } break; case MQTT_MSG_PUBACK://Qos1 msg_id_rcv = mqtt_parse_msg_id(packet_buffer); if(g_pub_topic2 && msg_id_rcv == g_pub_topic2->msg_id) { printf("APP publish msg[%s] with Qos 1\n", pub_msg2); deinit_topic(&g_pub_topic2); /* publish msg with Qos 2 */ //step1:>>>publish //step2:<<<pubrec //step3:>>>pubrel //step4:<<<pubcomp init_topic(&g_pub_topic3, pub_topic_name3, sizeof(pub_topic_name3)); mqtt_publish_with_qos(&g_stMQTTBroker, g_pub_topic3->name, pub_msg3, 1, 2, &(g_pub_topic3->msg_id)); } break; case MQTT_MSG_PUBREC://Qos2 msg_id_rcv = mqtt_parse_msg_id(packet_buffer); if(g_pub_topic3 && msg_id_rcv == g_pub_topic3->msg_id) mqtt_pubrel(&g_stMQTTBroker, g_pub_topic3->msg_id); break; case MQTT_MSG_PUBCOMP://Qos2 msg_id_rcv = mqtt_parse_msg_id(packet_buffer); if(g_pub_topic3 && msg_id_rcv == g_pub_topic3->msg_id) { printf("APP publish msg[%s] with Qos 2\n", pub_msg3); deinit_topic(&g_pub_topic3); } break; default: printf("Unknow mqtt msg type\n"); break; } }
int main(int argc, char* argv[]) { int packet_length; uint16_t msg_id, msg_id_rcv; mqtt_broker_handle_t broker; mqtt_init(&broker, "avengalvon"); mqtt_init_auth(&broker, "cid", "campeador"); init_socket(&broker, "127.0.0.1", 1883); // >>>>> CONNECT mqtt_connect(&broker); // <<<<< CONNACK packet_length = read_packet(1); if(packet_length < 0) { fprintf(stderr, "Error(%d) on read packet!\n", packet_length); return -1; } if(MQTTParseMessageType(packet_buffer) != MQTT_MSG_CONNACK) { fprintf(stderr, "CONNACK expected!\n"); return -2; } if(packet_buffer[3] != 0x00) { fprintf(stderr, "CONNACK failed!\n"); return -2; } // >>>>> PUBLISH QoS 0 printf("Publish: QoS 0\n"); mqtt_publish(&broker, "hello/emqtt", "Example: QoS 0", 0); // >>>>> PUBLISH QoS 1 printf("Publish: QoS 1\n"); mqtt_publish_with_qos(&broker, "hello/emqtt", "Example: QoS 1", 0, 1, &msg_id); // <<<<< PUBACK packet_length = read_packet(1); if(packet_length < 0) { fprintf(stderr, "Error(%d) on read packet!\n", packet_length); return -1; } if(MQTTParseMessageType(packet_buffer) != MQTT_MSG_PUBACK) { fprintf(stderr, "PUBACK expected!\n"); return -2; } msg_id_rcv = mqtt_parse_msg_id(packet_buffer); if(msg_id != msg_id_rcv) { fprintf(stderr, "%d message id was expected, but %d message id was found!\n", msg_id, msg_id_rcv); return -3; } // >>>>> PUBLISH QoS 2 printf("Publish: QoS 2\n"); mqtt_publish_with_qos(&broker, "hello/emqtt", "Example: QoS 2", 1, 2, &msg_id); // Retain // <<<<< PUBREC packet_length = read_packet(1); if(packet_length < 0) { fprintf(stderr, "Error(%d) on read packet!\n", packet_length); return -1; } if(MQTTParseMessageType(packet_buffer) != MQTT_MSG_PUBREC) { fprintf(stderr, "PUBREC expected!\n"); return -2; } msg_id_rcv = mqtt_parse_msg_id(packet_buffer); if(msg_id != msg_id_rcv) { fprintf(stderr, "%d message id was expected, but %d message id was found!\n", msg_id, msg_id_rcv); return -3; } // >>>>> PUBREL mqtt_pubrel(&broker, msg_id); // <<<<< PUBCOMP packet_length = read_packet(1); if(packet_length < 0) { fprintf(stderr, "Error(%d) on read packet!\n", packet_length); return -1; } if(MQTTParseMessageType(packet_buffer) != MQTT_MSG_PUBCOMP) { fprintf(stderr, "PUBCOMP expected!\n"); return -2; } msg_id_rcv = mqtt_parse_msg_id(packet_buffer); if(msg_id != msg_id_rcv) { fprintf(stderr, "%d message id was expected, but %d message id was found!\n", msg_id, msg_id_rcv); return -3; } // >>>>> DISCONNECT mqtt_disconnect(&broker); close_socket(&broker); return 0; }