Does free Xively account causes QoS 1 or 2 publish failed? - mqtt

Question

My code (below) is working if I use QoS 0. But for QoS 1 or QoS 2. MQTTClient_publishMessage(...) failed.
Am I missing any configuration? Or, is it because I am using free XIvely account?
I use Paho API.
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/**
* #file
*
* Paho MQ Client API to Xively mqtt broker
*
*/
enter code here
#include "MQTTClient.h"
#include <stdlib.h>
void usage()
{
printf("Usage: speicify QoS\n");
printf(" turn on bulb -> ka_pub Qos 1 1\n");
printf(" turn off bulb -> ka_pub Qos 1 0\n");
printf(" send 7 to led -> ka_pub Qos 2 7\n");
printf(" send 2 to led -> ka_pub Qos 2 2\n");
}
int main(int argc, char** argv)
{
int rc = 0;
if (argc < 3) {
usage();
exit (0);
}
char TOPIC[250] ; // given enough space first to avoid malloc
MQTTClient client;
MQTTClient_connectOptions conn_opts = MQTTClient_connectOptions_initializer;
MQTTClient_message pubmsg = MQTTClient_message_initializer;
MQTTClient_deliveryToken token;
int QoS = atoi(argv[1]);
if (argv[2][0] == '1') {
strcpy(TOPIC, BULB_TOPIC);
conn_opts.username = BULB_API_KEY ;
conn_opts.password = "" ; // will be ignored
} else
if (argv[2][0] == '2') {
strcpy(TOPIC, LED_TOPIC) ;
conn_opts.username = LED_API_KEY ;
conn_opts.password = "" ; // will be ignored
} else {
printf("Bad arg\n");
usage();
exit (0);
}
setenv("MQTT_C_CLIENT_TRACE", "ON", 1); // same as 'stdout'
setenv("MQTT_C_CLIENT_TRACE_LEVEL", "ERROR", 1); //ERROR, PROTOCOL, MINIMUM, MEDIUM and MAXIMUM
MQTTClient_create(&client, XIVELY_END_URL, "test", MQTTCLIENT_PERSISTENCE_DEFAULT, NULL);
//conn_opts.keepAliveInterval = 20; // init to 60
//conn_opts.cleansession = 1; // default 1, will clean previous msg in server
conn_opts.reliable = 0 ; //default 1, only 1 can in-flight, 0 - allow 10 msg
if ((rc = MQTTClient_connect(client, &conn_opts)) != MQTTCLIENT_SUCCESS)
{
printf("Failed to connect, return code %d\n", rc);
exit(-1);
}
// prepare publish msg
char tmsg[250] ; // check max 250 boundary later
if (argv[2][0] == '1')
sprintf(tmsg, "{\"id\":\"switch\",\"current_value\":\"%c\"}", argv[3][0]);
else
sprintf(tmsg, "{\"id\":\"num\",\"current_value\":\"%c\"}", argv[3][0]) ;
int tmsg_len = strlen(tmsg);
pubmsg.payload = &tmsg[0] ;
pubmsg.payloadlen = tmsg_len; //mlen
pubmsg.qos = QoS;
pubmsg.retained = 0;
MQTTClient_publishMessage(client, TOPIC, &pubmsg, &token);
//MQTTClient_publish(client, TOPIC, pubmsg.payloadlen, pubmsg.payload,
// pubmsg.qos, pubmsg.retained, &token);
rc = MQTTClient_waitForCompletion(client, token, 100000);
printf("Finish publish for TOPIC: %s, QoS: %d, msg of '%s'\n", TOPIC, pubmsg.qos, (char *) pubmsg.payload);
if (rc == 0)
MyLog(LOGA_INFO, "verdict pass");
else
MyLog(LOGA_INFO, "verdict fail");
MQTTClient_disconnect(client, 10000);
MQTTClient_destroy(&client);
return rc;
}
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Answer 1

I don't believe Xively supports QoS>0.