/**
* MQTT retry protocol and socket pending writes processing.
* @param now current time
* @param doRetry boolean - retries as well as pending writes?
* @return not actually used
*/
int MQTTProtocol_retry(time_t now, int doRetry)
{
Node* current = NULL;
int rc = 0;
FUNC_ENTRY;
current = TreeNextElement(bstate->clients, current);
/* look through the outbound message list of each client, checking to see if a retry is necessary */
while (current)
{
Clients* client = (Clients*)(current->content);
current = TreeNextElement(bstate->clients, current);
if (client->connected == 0)
{
#if defined(MQTTS)
if (client->protocol == PROTOCOL_MQTTS)
{
if (difftime(now,client->lastContact) > bstate->retry_interval)
{
int rc2 = 0;
/* NB: no dup bit for these packets */
if (client->connect_state == 1) /* TODO: handle err */
rc2 = MQTTSPacket_send_willTopicReq(client);
else if (client->connect_state == 2) /* TODO: handle err */
rc2 = MQTTSPacket_send_willMsgReq(client);
if (rc2 == SOCKET_ERROR)
{
client->good = 0;
Log(LOG_WARNING, 29, NULL, client->clientID, client->socket);
MQTTProtocol_closeSession(client, 1);
client = NULL;
}
}
}
#endif
continue;
}
if (client->good == 0)
{
MQTTProtocol_closeSession(client, 1);
continue;
}
if (Socket_noPendingWrites(client->socket) == 0)
continue;
if (doRetry)
MQTTProtocol_retries(now, client);
if (client)
{
if (MQTTProtocol_processQueued(client))
rc = 1;
}
}
FUNC_EXIT_RC(rc);
return rc;
}
int MQTTSProtocol_handleWillTopics(void* pack, int sock, char* clientAddr, Clients* client)
{
MQTTS_WillTopic* willTopic = (MQTTS_WillTopic*)pack;
int rc = 0;
FUNC_ENTRY;
Log(LOG_PROTOCOL, 45, NULL, sock, clientAddr, client->clientID,
willTopic->flags.QoS, willTopic->flags.retain, willTopic->willTopic);
if (client->connect_state == 1)
{
MQTTProtocol_setWillTopic(client, willTopic->willTopic, willTopic->flags.retain, willTopic->flags.QoS);
willTopic->willTopic = NULL;
client->connect_state = 2;
rc = MQTTSPacket_send_willMsgReq(client);
}
MQTTSPacket_free_packet(pack);
time( &(client->lastContact) );
FUNC_EXIT_RC(rc);
return rc;
}
