void
fb_mqtt_unsubscribe(FbMqtt *mqtt, const gchar *topic1, ...)
{
const gchar *topic;
FbMqttMessage *msg;
FbMqttPrivate *priv;
va_list ap;
g_return_if_fail(FB_IS_MQTT(mqtt));
g_return_if_fail(fb_mqtt_connected(mqtt, FALSE));
priv = mqtt->priv;
/* Facebook requires a message identifier, use QoS1 */
msg = fb_mqtt_message_new(FB_MQTT_MESSAGE_TYPE_UNSUBSCRIBE,
FB_MQTT_MESSAGE_FLAG_QOS1);
fb_mqtt_message_write_mid(msg, &priv->mid); /* Message identifier */
fb_mqtt_message_write_str(msg, topic1); /* First topic */
va_start(ap, topic1);
while ((topic = va_arg(ap, const gchar*)) != NULL) {
fb_mqtt_message_write_str(msg, topic); /* Remaining topics */
}
va_end(ap);
fb_mqtt_write(mqtt, msg);
g_object_unref(msg);
}
/**
* Unsubscribes from one or more topics.
*
* @param mqtt The #fb_mqtt.
* @param topic1 The first topic name.
* @param ... Additional topic names, NULL-terminated.
**/
void fb_mqtt_unsubscribe(fb_mqtt_t *mqtt, const gchar *topic1, ...)
{
fb_mqtt_msg_t *msg;
va_list ap;
const gchar *topic;
g_return_if_fail(mqtt != NULL);
if (G_UNLIKELY(!fb_mqtt_connected(mqtt, TRUE)))
return;
/* Facebook requires a message identifier, use QoS1 */
msg = fb_mqtt_msg_new(FB_MQTT_MSG_TYPE_UNSUBSCRIBE, FB_MQTT_MSG_FLAG_QOS1);
fb_mqtt_msg_write_mid(msg, &mqtt->mid); /* Message identifier */
fb_mqtt_msg_write_str(msg, topic1); /* First topic */
va_start(ap, topic1);
while ((topic = va_arg(ap, const gchar*)) != NULL)
fb_mqtt_msg_write_str(msg, topic); /* Remaining topics */
va_end(ap);
fb_mqtt_write(mqtt, msg);
fb_mqtt_msg_free(msg);
}
/**
* Connects to the MQTT service. This first establishes an SSL based
* socket. Then it sends the initial connection packet with optional
* arguments, which correspond to the flags provided. The arguments
* must be passed in order: client identifier, will topic, will
* message, username, and password (not required). The arguments must
* be in a string format.
*
* @param mqtt The #fb_mqtt.
* @param timeout The keep-alive timeout (seconds).
* @param flags The #fb_mqtt_connect_flags.
* @param cid The client identifier.
* @param ... Additional arguments in order, NULL-terminated.
**/
void fb_mqtt_connect(fb_mqtt_t *mqtt, guint8 flags, const gchar *cid, ...)
{
fb_mqtt_msg_t *msg;
va_list ap;
const gchar *str;
g_return_if_fail(mqtt != NULL);
if (G_UNLIKELY(fb_mqtt_connected(mqtt, FALSE)))
return;
/* Facebook always sends a CONNACK, use QoS1 */
flags |= FB_MQTT_CONNECT_FLAG_QOS1;
msg = fb_mqtt_msg_new(FB_MQTT_MSG_TYPE_CONNECT, 0);
fb_mqtt_msg_write_str(msg, FB_MQTT_NAME); /* Protocol name */
fb_mqtt_msg_write_byte(msg, FB_MQTT_VERS); /* Protocol version */
fb_mqtt_msg_write_byte(msg, flags); /* Flags */
fb_mqtt_msg_write_u16(msg, FB_MQTT_KA); /* Keep alive */
fb_mqtt_msg_write_str(msg, cid); /* Client identifier */
va_start(ap, cid);
while ((str = va_arg(ap, const gchar*)) != NULL)
fb_mqtt_msg_write_str(msg, str);
va_end(ap);
fb_mqtt_write(mqtt, msg);
fb_mqtt_msg_free(msg);
fb_mqtt_timeout(mqtt);
}
void
fb_mqtt_disconnect(FbMqtt *mqtt)
{
FbMqttMessage *msg;
if (G_UNLIKELY(!fb_mqtt_connected(mqtt, FALSE))) {
return;
}
msg = fb_mqtt_message_new(FB_MQTT_MESSAGE_TYPE_DISCONNECT, 0);
fb_mqtt_write(mqtt, msg);
g_object_unref(msg);
fb_mqtt_close(mqtt);
}
/**
* Disconnects from the MQTT service. This cleanly disconnects from the
* MQTT services, rather than killing the socket stream. This closes
* the #fb_mqtt via #fb_mqtt_close().
*
* @param mqtt The #fb_mqtt.
**/
void fb_mqtt_disconnect(fb_mqtt_t *mqtt)
{
fb_mqtt_msg_t *msg;
g_return_if_fail(mqtt != NULL);
if (G_UNLIKELY(!fb_mqtt_connected(mqtt, FALSE)))
return;
msg = fb_mqtt_msg_new(FB_MQTT_MSG_TYPE_DISCONNECT, 0);
fb_mqtt_write(mqtt, msg);
fb_mqtt_msg_free(msg);
fb_mqtt_close(mqtt);
}
/**
* Publishes a message to MQTT service.
*
* @param mqtt The #fb_mqtt.
* @param topic The message topic.
* @param pload The #GByteArray payload or NULL.
**/
void fb_mqtt_publish(fb_mqtt_t *mqtt, const gchar *topic,
const GByteArray *pload)
{
fb_mqtt_msg_t *msg;
g_return_if_fail(mqtt != NULL);
if (G_UNLIKELY(!fb_mqtt_connected(mqtt, TRUE)))
return;
/* Message identifier not required, but for consistency use QoS1 */
msg = fb_mqtt_msg_new(FB_MQTT_MSG_TYPE_PUBLISH, FB_MQTT_MSG_FLAG_QOS1);
fb_mqtt_msg_write_str(msg, topic); /* Message topic */
fb_mqtt_msg_write_mid(msg, &mqtt->mid); /* Message identifier */
if (pload != NULL)
fb_mqtt_msg_write(msg, pload->data, pload->len);
fb_mqtt_write(mqtt, msg);
fb_mqtt_msg_free(msg);
}
void
fb_mqtt_connect(FbMqtt *mqtt, guint8 flags, const GByteArray *pload)
{
FbMqttMessage *msg;
g_return_if_fail(!fb_mqtt_connected(mqtt, FALSE));
g_return_if_fail(pload != NULL);
/* Facebook always sends a CONNACK, use QoS1 */
flags |= FB_MQTT_CONNECT_FLAG_QOS1;
msg = fb_mqtt_message_new(FB_MQTT_MESSAGE_TYPE_CONNECT, 0);
fb_mqtt_message_write_str(msg, FB_MQTT_NAME); /* Protocol name */
fb_mqtt_message_write_byte(msg, FB_MQTT_LEVEL); /* Protocol level */
fb_mqtt_message_write_byte(msg, flags); /* Flags */
fb_mqtt_message_write_u16(msg, FB_MQTT_KA); /* Keep alive */
fb_mqtt_message_write(msg, pload->data, pload->len);
fb_mqtt_write(mqtt, msg);
fb_mqtt_timeout(mqtt);
g_object_unref(msg);
}
void
fb_mqtt_publish(FbMqtt *mqtt, const gchar *topic, const GByteArray *pload)
{
FbMqttMessage *msg;
FbMqttPrivate *priv;
g_return_if_fail(FB_IS_MQTT(mqtt));
g_return_if_fail(fb_mqtt_connected(mqtt, FALSE));
priv = mqtt->priv;
/* Message identifier not required, but for consistency use QoS1 */
msg = fb_mqtt_message_new(FB_MQTT_MESSAGE_TYPE_PUBLISH,
FB_MQTT_MESSAGE_FLAG_QOS1);
fb_mqtt_message_write_str(msg, topic); /* Message topic */
fb_mqtt_message_write_mid(msg, &priv->mid); /* Message identifier */
if (pload != NULL) {
fb_mqtt_message_write(msg, pload->data, pload->len);
}
fb_mqtt_write(mqtt, msg);
g_object_unref(msg);
}
