/**
* Process an incoming pubrel packet for a socket
* @param pack pointer to the publish packet
* @param sock the socket on which the packet was received
* @return completion code
*/
int MQTTProtocol_handlePubrels(void* pack, int sock, Clients* client)
{
Pubrel* pubrel = (Pubrel*)pack;
//Clients* client = (Clients*)(TreeFind(bstate->clients, &sock)->content);
int rc = TCPSOCKET_COMPLETE;
FUNC_ENTRY;
Log(LOG_PROTOCOL, 17, NULL, sock, client->clientID, pubrel->msgId);
/* look for the message by message id in the records of inbound messages for this client */
if (ListFindItem(client->inboundMsgs, &(pubrel->msgId), messageIDCompare) == NULL)
{
if (pubrel->header.bits.dup == 0)
Log(LOG_WARNING, 50, NULL, "PUBREL", client->clientID, pubrel->msgId);
/* Apparently this is "normal" behaviour, so we don't need to issue a warning */
rc = MQTTPacket_send_pubcomp(pubrel->msgId, sock, client->clientID);
}
else
{
Messages* m = (Messages*)(client->inboundMsgs->current->content);
if (m->qos != 2)
Log(LOG_WARNING, 51, NULL, "PUBREL", client->clientID, pubrel->msgId, m->qos);
else if (m->nextMessageType != PUBREL)
Log(LOG_WARNING, 52, NULL, "PUBREL", client->clientID, pubrel->msgId);
else
{
Publish publish;
char* saved_clientid = malloc(strlen(client->clientID) + 1);
strcpy(saved_clientid, client->clientID);
/* send pubcomp before processing the publications because a lot of return publications could fill up the socket buffer */
rc = MQTTPacket_send_pubcomp(pubrel->msgId, sock, client->clientID);
publish.header.bits.qos = m->qos;
publish.header.bits.retain = m->retain;
publish.msgId = m->msgid;
publish.topic = m->publish->topic;
publish.payload = m->publish->payload;
publish.payloadlen = m->publish->payloadlen;
++(bstate->msgs_received);
bstate->bytes_received += m->publish->payloadlen;
Protocol_processPublication(&publish, client->clientID);
/* The client structure might have been removed in processPublication, on error */
if (TreeFind(bstate->clients, &sock) || TreeFind(bstate->disconnected_clients, saved_clientid))
{
ListRemove(client->inboundMsgs, m);
MQTTProtocol_removePublication(m->publish);
}
free(saved_clientid);
}
}
free(pack);
FUNC_EXIT_RC(rc);
return rc;
}
/**
* Process an incoming pubrel packet for a socket
* @param pack pointer to the publish packet
* @param sock the socket on which the packet was received
* @return completion code
*/
int MQTTProtocol_handlePubrels(void* pack, int sock)
{
Pubrel* pubrel = (Pubrel*)pack;
Clients* client = NULL;
int rc = TCPSOCKET_COMPLETE;
FUNC_ENTRY;
client = (Clients*)(ListFindItem(bstate->clients, &sock, clientSocketCompare)->content);
Log(LOG_PROTOCOL, 17, NULL, sock, client->clientID, pubrel->msgId);
/* look for the message by message id in the records of inbound messages for this client */
if (ListFindItem(client->inboundMsgs, &(pubrel->msgId), messageIDCompare) == NULL)
{
if (pubrel->header.bits.dup == 0)
Log(TRACE_MIN, 3, NULL, "PUBREL", client->clientID, pubrel->msgId);
else
/* Apparently this is "normal" behaviour, so we don't need to issue a warning */
rc = MQTTPacket_send_pubcomp(pubrel->msgId, &client->net, client->clientID);
}
else
{
Messages* m = (Messages*)(client->inboundMsgs->current->content);
if (m->qos != 2)
Log(TRACE_MIN, 4, NULL, "PUBREL", client->clientID, pubrel->msgId, m->qos);
else if (m->nextMessageType != PUBREL)
Log(TRACE_MIN, 5, NULL, "PUBREL", client->clientID, pubrel->msgId);
else
{
Publish publish;
/* send pubcomp before processing the publications because a lot of return publications could fill up the socket buffer */
rc = MQTTPacket_send_pubcomp(pubrel->msgId, &client->net, client->clientID);
publish.header.bits.qos = m->qos;
publish.header.bits.retain = m->retain;
publish.msgId = m->msgid;
publish.topic = m->publish->topic;
publish.topiclen = m->publish->topiclen;
publish.payload = m->publish->payload;
publish.payloadlen = m->publish->payloadlen;
Protocol_processPublication(&publish, client);
#if !defined(NO_PERSISTENCE)
rc += MQTTPersistence_remove(client, PERSISTENCE_PUBLISH_RECEIVED, m->qos, pubrel->msgId);
#endif
ListRemove(&(state.publications), m->publish);
ListRemove(client->inboundMsgs, m);
++(state.msgs_received);
}
}
free(pack);
FUNC_EXIT_RC(rc);
return rc;
}