static int MqttSample_CmdSubscribe(struct MqttSampleContext *ctx)
{
int err;
char topic[1024];
sprintf(topic, "%s/%s/45523/test-1", ctx->proid, ctx->apikey);
err = Mqtt_PackSubscribePkt(ctx->mqttbuf, 11, topic, MQTT_QOS_LEVEL1);
if(err != MQTTERR_NOERROR) {
printf("Critical bug: failed to pack the subscribe packet.\n");
return -1;
}
sprintf(topic, "%s/%s/45523/test-2", ctx->proid, ctx->apikey);
err = Mqtt_AppendSubscribeTopic(ctx->mqttbuf, topic, MQTT_QOS_LEVEL1);
if (err != MQTTERR_NOERROR) {
printf("Critical bug: failed to pack the subscribe packet.\n");
return -1;
}
return 0;
}
/**
* @brief 设备订阅报文，TOPIC是TOPIC_TO_SUB
* @param ctx:上下文变量
* @retval ret:0,成功，<0 失败
**/
static int MqttSample_CmdSubscribe(struct MqttSampleContext *ctx)
{
int err;
int bytes = 0;
printf("%s %d\n", __func__, __LINE__);
err = Mqtt_PackSubscribePkt(ctx->mqttbuf, 1, TOPIC_TO_SUB, MQTT_QOS_LEVEL1);
if(err != MQTTERR_NOERROR)
{
printf("Critical bug: failed to pack the subscribe packet.\n");
return -1;
}
printf("%s %d\n", __func__, __LINE__);
/* err = Mqtt_AppendSubscribeTopic(ctx->mqttbuf, "433223/Bs04OCJioNgpmvjRphRak15j7Z8=/25267/test-2", MQTT_QOS_LEVEL2); */
if(err != MQTTERR_NOERROR)
{
printf("Critical bug: failed to append the topic to the "
"subscribe packet.\n");
return -1;
}
bytes = Mqtt_SendPkt(ctx->mqttctx, ctx->mqttbuf, 0);
MqttBuffer_Reset(ctx->mqttbuf);
return 0;
}