cdbe62c2bb
This change in behaviour can be justified by considering when the timeout may have occurred. * If a connection is unreliable and has dropped, but without one end noticing, the messages will be retried on reconnection. Sending additional PUBLISH or PUBREL would not have changed anything. * If a client is overloaded/unable to respond/has a slow connection then sending additional PUBLISH or PUBREL would not help the client catch up. Once the backlog has cleared the client will respond. If it is not able to catch up, sending additional duplicates would not help either.
64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
/*
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Copyright (c) 2009-2015 Roger Light <roger@atchoo.org>
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All rights reserved. This program and the accompanying materials
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are made available under the terms of the Eclipse Public License v1.0
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and Eclipse Distribution License v1.0 which accompany this distribution.
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The Eclipse Public License is available at
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http://www.eclipse.org/legal/epl-v10.html
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and the Eclipse Distribution License is available at
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http://www.eclipse.org/org/documents/edl-v10.php.
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Contributors:
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Roger Light - initial implementation and documentation.
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*/
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#include <assert.h>
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#include "mosquitto.h"
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#include "logging_mosq.h"
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#include "memory_mosq.h"
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#include "messages_mosq.h"
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#include "net_mosq.h"
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#include "packet_mosq.h"
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#include "read_handle.h"
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int handle__connack(struct mosquitto *mosq)
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{
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uint8_t byte;
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uint8_t result;
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int rc;
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assert(mosq);
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log__printf(mosq, MOSQ_LOG_DEBUG, "Client %s received CONNACK", mosq->id);
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rc = packet__read_byte(&mosq->in_packet, &byte); // Reserved byte, not used
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if(rc) return rc;
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rc = packet__read_byte(&mosq->in_packet, &result);
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if(rc) return rc;
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pthread_mutex_lock(&mosq->callback_mutex);
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if(mosq->on_connect){
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mosq->in_callback = true;
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mosq->on_connect(mosq, mosq->userdata, result);
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mosq->in_callback = false;
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}
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pthread_mutex_unlock(&mosq->callback_mutex);
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switch(result){
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case 0:
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if(mosq->state != mosq_cs_disconnecting){
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mosq->state = mosq_cs_connected;
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}
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message__retry_check(mosq);
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return MOSQ_ERR_SUCCESS;
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case 1:
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case 2:
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case 3:
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case 4:
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case 5:
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return MOSQ_ERR_CONN_REFUSED;
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default:
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return MOSQ_ERR_PROTOCOL;
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}
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}
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