/**
* Initialize the MQTT protocol modules.
* @param aBrokerState pointer to the broker state structure
*/
int MQTTProtocol_initialize(BrokerStates* aBrokerState)
{
int rc = 0;
FUNC_ENTRY;
bstate = aBrokerState;
memset(&state, '\0', sizeof(state));
rc = MQTTProtocol_reinitialize();
FUNC_EXIT_RC(rc);
return rc;
}
/**
* Timeslice function to run protocol exchanges
*/
void Protocol_timeslice()
{
int sock;
int bridge_connection = 0;
static int more_work = 0;
FUNC_ENTRY;
if ((sock = Socket_getReadySocket(more_work, NULL)) == SOCKET_ERROR)
{
#if defined(WIN32)
int errno;
errno = WSAGetLastError();
#endif
if (errno != EINTR && errno != EAGAIN && errno != EINPROGRESS && errno != EWOULDBLOCK)
{
Log(LOG_SEVERE, 0, "Restarting MQTT protocol to resolve socket problems");
MQTTProtocol_shutdown(0);
SubscriptionEngines_save(bstate->se);
MQTTProtocol_reinitialize();
goto exit;
}
}
MQTTProtocol_checkPendingWrites();
if (sock > 0)
{
Clients* client = NULL;
Node* curnode = TreeFind(bstate->clients, &sock);
if (curnode)
{
client = (Clients*)(curnode->content);
#if !defined(NO_BRIDGE)
if (client->outbound && client->connect_state == 1)
{
Bridge_handleConnection(client);
bridge_connection = 1;
}
#endif
}
if (bridge_connection == 0)
#if defined(MQTTS)
{
int protocol = PROTOCOL_MQTT;
if (client == NULL)
protocol = Socket_getParentListener(sock)->protocol;
else
protocol = client->protocol;
if (protocol == PROTOCOL_MQTT)
#endif
MQTTProtocol_timeslice(sock, client);
#if defined(MQTTS)
else if (protocol == PROTOCOL_MQTTS)
MQTTSProtocol_timeslice(sock);
}
#endif
}
if (bstate->state != BROKER_STOPPING)
#if !defined(NO_ADMIN_COMMANDS)
Persistence_read_command(bstate);
#else
;
#endif
else
