void _mosquitto_messages_reconnect_reset(struct mosquitto *mosq)
{
struct mosquitto_message_all *message;
struct mosquitto_message_all *prev = NULL;
assert(mosq);
mosq->queue_len = 0;
message = mosq->messages;
while(message){
message->timestamp = 0;
if(message->direction == mosq_md_out){
if(message->msg.qos == 1){
message->state = mosq_ms_wait_puback;
}else if(message->msg.qos == 2){
message->state = mosq_ms_wait_pubrec;
}
mosq->queue_len++;
}else{
if(prev){
prev->next = message->next;
_mosquitto_message_cleanup(&message);
message = prev;
}else{
mosq->messages = message->next;
_mosquitto_message_cleanup(&message);
message = mosq->messages;
}
}
prev = message;
message = message->next;
}
}
void _mosquitto_messages_reconnect_reset(struct mosquitto *mosq)
{
struct mosquitto_message_all *message;
struct mosquitto_message_all *prev = NULL;
assert(mosq);
pthread_mutex_lock(&mosq->in_message_mutex);
message = mosq->in_messages;
mosq->in_queue_len = 0;
while(message){
mosq->in_queue_len++;
message->timestamp = 0;
if(message->msg.qos != 2){
if(prev){
prev->next = message->next;
_mosquitto_message_cleanup(&message);
message = prev;
}else{
mosq->in_messages = message->next;
_mosquitto_message_cleanup(&message);
message = mosq->in_messages;
}
}else{
/* Message state can be preserved here because it should match
* whatever the client has got. */
}
prev = message;
message = message->next;
}
mosq->in_messages_last = prev;
pthread_mutex_unlock(&mosq->in_message_mutex);
pthread_mutex_lock(&mosq->out_message_mutex);
mosq->inflight_messages = 0;
message = mosq->out_messages;
mosq->out_queue_len = 0;
while(message){
mosq->out_queue_len++;
message->timestamp = 0;
if(message->msg.qos > 0){
mosq->inflight_messages++;
}
if(mosq->max_inflight_messages == 0 || mosq->inflight_messages < mosq->max_inflight_messages){
if(message->msg.qos == 1){
message->state = mosq_ms_wait_for_puback;
}else if(message->msg.qos == 2){
/* Should be able to preserve state. */
}
}else{
message->state = mosq_ms_invalid;
}
prev = message;
message = message->next;
}
mosq->out_messages_last = prev;
pthread_mutex_unlock(&mosq->out_message_mutex);
}
int mosquitto_publish(struct mosquitto *mosq, int *mid, const char *topic, int payloadlen, const void *payload, int qos, bool retain)
{
struct mosquitto_message_all *message;
uint16_t local_mid;
if(!mosq || !topic || qos<0 || qos>2) return MOSQ_ERR_INVAL;
if(strlen(topic) == 0) return MOSQ_ERR_INVAL;
if(payloadlen < 0 || payloadlen > MQTT_MAX_PAYLOAD) return MOSQ_ERR_PAYLOAD_SIZE;
if(_mosquitto_topic_wildcard_len_check(topic) != MOSQ_ERR_SUCCESS) {
return MOSQ_ERR_INVAL;
}
//获取总共发送信息数，并加1返回
local_mid = _mosquitto_mid_generate(mosq);
if(mid) {
*mid = local_mid;
}
if(qos == 0) {
return _mosquitto_send_publish(mosq, local_mid, topic, payloadlen, payload, qos, retain, false);
} else {
message = _mosquitto_calloc(1, sizeof(struct mosquitto_message_all));
if(!message) return MOSQ_ERR_NOMEM;
message->next = NULL;
message->timestamp = time(NULL);
message->direction = mosq_md_out;
if(qos == 1) {
message->state = mosq_ms_wait_puback;
} else if(qos == 2) {
message->state = mosq_ms_wait_pubrec;
}
message->msg.mid = local_mid;
message->msg.topic = _mosquitto_strdup(topic);
if(!message->msg.topic) {
_mosquitto_message_cleanup(&message);
return MOSQ_ERR_NOMEM;
}
if(payloadlen) {
message->msg.payloadlen = payloadlen;
message->msg.payload = _mosquitto_malloc(payloadlen*sizeof(uint8_t));
if(!message->msg.payload) {
_mosquitto_message_cleanup(&message);
return MOSQ_ERR_NOMEM;
}
memcpy(message->msg.payload, payload, payloadlen*sizeof(uint8_t));
} else {
message->msg.payloadlen = 0;
message->msg.payload = NULL;
}
message->msg.qos = qos;
message->msg.retain = retain;
message->dup = false;
_mosquitto_message_queue(mosq, message);
return _mosquitto_send_publish(mosq, message->msg.mid, message->msg.topic, message->msg.payloadlen, message->msg.payload, message->msg.qos, message->msg.retain, message->dup);
}
}
int _mosquitto_handle_pubrel(struct mosquitto *mosq)
{
uint16_t mid;
struct mosquitto_message_all *message = NULL;
int rc;
assert(mosq);
if(mosq->core.in_packet.remaining_length != 2){
return MOSQ_ERR_PROTOCOL;
}
rc = _mosquitto_read_uint16(&mosq->core.in_packet, &mid);
if(rc) return rc;
_mosquitto_log_printf(mosq, MOSQ_LOG_DEBUG, "Received PUBREL (Mid: %d)", mid);
if(!_mosquitto_message_remove(mosq, mid, mosq_md_in, &message)){
/* Only pass the message on if we have removed it from the queue - this
* prevents multiple callbacks for the same message. */
if(mosq->on_message){
mosq->on_message(mosq->obj, &message->msg);
}else{
_mosquitto_message_cleanup(&message);
}
}
rc = _mosquitto_send_pubcomp(mosq, mid);
if(rc) return rc;
return MOSQ_ERR_SUCCESS;
}
void _mosquitto_message_cleanup_all(struct mosquitto *mosq)
{
struct mosquitto_message_all *tmp;
assert(mosq);
while(mosq->in_messages){
tmp = mosq->in_messages->next;
_mosquitto_message_cleanup(&mosq->in_messages);
mosq->in_messages = tmp;
}
while(mosq->out_messages){
tmp = mosq->out_messages->next;
_mosquitto_message_cleanup(&mosq->out_messages);
mosq->out_messages = tmp;
}
}
int _mosquitto_message_delete(struct mosquitto *mosq, uint16_t mid, enum mosquitto_msg_direction dir)
{
struct mosquitto_message_all *message;
int rc;
assert(mosq);
rc = _mosquitto_message_remove(mosq, mid, dir, &message);
if(rc == MOSQ_ERR_SUCCESS){
_mosquitto_message_cleanup(&message);
}
return rc;
}
//超过重发限，需要移除消息，返回失败信息，add by lanhuaiyu@20150508
void _mos_message_retry_check_timeout(struct mosquitto *mosq)
{
time_t now = mosquitto_time();
assert(mosq);
struct mosquitto_message_all *cur, *prev = NULL;
pthread_mutex_lock(&mosq->out_message_mutex);
cur = mosq->out_messages;
while(cur){
if (cur->timestamp > 0
&& cur->state != mosq_ms_invalid
&& (now - cur->timestamp) > mosq->max_message_retry)
{
_mosquitto_log_printf(mosq, MOSQ_LOG_NOTICE, "Message timeout %d will give up;now:%ld timestamp:%ld ", cur->msg.mid,now, cur->timestamp, mosq->max_message_retry);
if(prev){
prev->next = cur->next;
}else{
mosq->out_messages = cur->next;
}
mosq->out_queue_len--;
if(cur->next == NULL){
mosq->out_messages_last = prev;
}else if(!mosq->out_messages){
mosq->out_messages_last = NULL;
}
if(cur->msg.qos > 0){
mosq->inflight_messages--;
}
if (mosq->on_publish != NULL) {
mosq->on_publish(mosq, mosq->userdata,cur->msg.mid, MOSQ_ERR_MSG_FAILED);
}
struct mosquitto_message_all* temp_del = cur;
cur = cur->next;
//need release memory
_mosquitto_message_cleanup(&temp_del);
}
else{
prev = cur;
cur = cur->next;
}
}
pthread_mutex_unlock(&mosq->out_message_mutex);
}
int _mosquitto_handle_pubrel(struct mosquitto_db *db, struct mosquitto *mosq)
{
uint16_t mid;
#ifndef WITH_BROKER
struct mosquitto_message_all *message = NULL;
#endif
int rc;
assert(mosq);
if(mosq->protocol == mosq_p_mqtt311){
if((mosq->in_packet.command&0x0F) != 0x02){
return MOSQ_ERR_PROTOCOL;
}
}
rc = _mosquitto_read_uint16(&mosq->in_packet, &mid);
if(rc) return rc;
#ifdef WITH_BROKER
_mosquitto_log_printf(NULL, MOSQ_LOG_DEBUG, "Received PUBREL from %s (Mid: %d)", mosq->id, mid);
if(mqtt3_db_message_release(db, mosq, mid, mosq_md_in)){
/* Message not found. Still send a PUBCOMP anyway because this could be
* due to a repeated PUBREL after a client has reconnected. */
}
#else
_mosquitto_log_printf(mosq, MOSQ_LOG_DEBUG, "Client %s received PUBREL (Mid: %d)", mosq->id, mid);
if(!_mosquitto_message_remove(mosq, mid, mosq_md_in, &message)){
/* Only pass the message on if we have removed it from the queue - this
* prevents multiple callbacks for the same message. */
pthread_mutex_lock(&mosq->callback_mutex);
if(mosq->on_message){
mosq->in_callback = true;
mosq->on_message(mosq, mosq->userdata, &message->msg);
mosq->in_callback = false;
}
pthread_mutex_unlock(&mosq->callback_mutex);
_mosquitto_message_cleanup(&message);
}
#endif
rc = _mosquitto_send_pubcomp(mosq, mid);
if(rc) return rc;
return MOSQ_ERR_SUCCESS;
}
int _mosquitto_handle_pubrel(struct mosquitto_db *db, struct mosquitto *mosq)
{
uint16_t mid;
#ifndef WITH_BROKER
struct mosquitto_message_all *message = NULL;
#endif
int rc;
assert(mosq);
#ifdef WITH_STRICT_PROTOCOL
if(mosq->in_packet.remaining_length != 2){
return MOSQ_ERR_PROTOCOL;
}
#endif
rc = _mosquitto_read_uint16(&mosq->in_packet, &mid);
if(rc) return rc;
#ifdef WITH_BROKER
_mosquitto_log_printf(NULL, MOSQ_LOG_DEBUG, "Received PUBREL from %s (Mid: %d)", mosq->id, mid);
if(mqtt3_db_message_release(db, mosq, mid, mosq_md_in)){
/* Message not found. */
return MOSQ_ERR_SUCCESS;
}
#else
_mosquitto_log_printf(mosq, MOSQ_LOG_DEBUG, "Client %s received PUBREL (Mid: %d)", mosq->id, mid);
if(!_mosquitto_message_remove(mosq, mid, mosq_md_in, &message)){
/* Only pass the message on if we have removed it from the queue - this
* prevents multiple callbacks for the same message. */
pthread_mutex_lock(&mosq->callback_mutex);
if(mosq->on_message){
mosq->in_callback = true;
mosq->on_message(mosq, mosq->userdata, &message->msg);
mosq->in_callback = false;
}
pthread_mutex_unlock(&mosq->callback_mutex);
_mosquitto_message_cleanup(&message);
}
#endif
rc = _mosquitto_send_pubcomp(mosq, mid);
if(rc) return rc;
return MOSQ_ERR_SUCCESS;
}
int mosquitto_publish(struct mosquitto *mosq, int *mid, const char *topic, int payloadlen, const void *payload, int qos, bool retain)
{
struct mosquitto_message_all *message;
uint16_t local_mid;
int queue_status;
if(!mosq || !topic || qos<0 || qos>2) return MOSQ_ERR_INVAL;
if(STREMPTY(topic)) return MOSQ_ERR_INVAL;
if(payloadlen < 0 || payloadlen > MQTT_MAX_PAYLOAD) return MOSQ_ERR_PAYLOAD_SIZE;
if(mosquitto_pub_topic_check(topic) != MOSQ_ERR_SUCCESS){
return MOSQ_ERR_INVAL;
}
local_mid = _mosquitto_mid_generate(mosq);
if(mid){
*mid = local_mid;
}
if(qos == 0){
return _mosquitto_send_publish(mosq, local_mid, topic, payloadlen, payload, qos, retain, false);
}else{
message = _mosquitto_calloc(1, sizeof(struct mosquitto_message_all));
if(!message) return MOSQ_ERR_NOMEM;
message->next = NULL;
message->timestamp = mosquitto_time();
message->msg.mid = local_mid;
message->msg.topic = _mosquitto_strdup(topic);
if(!message->msg.topic){
_mosquitto_message_cleanup(&message);
return MOSQ_ERR_NOMEM;
}
if(payloadlen){
message->msg.payloadlen = payloadlen;
message->msg.payload = _mosquitto_malloc(payloadlen*sizeof(uint8_t));
if(!message->msg.payload){
_mosquitto_message_cleanup(&message);
return MOSQ_ERR_NOMEM;
}
memcpy(message->msg.payload, payload, payloadlen*sizeof(uint8_t));
}else{
message->msg.payloadlen = 0;
message->msg.payload = NULL;
}
message->msg.qos = qos;
message->msg.retain = retain;
message->dup = false;
pthread_mutex_lock(&mosq->out_message_mutex);
printf("================ mosquitto.c ================\n");
printf("#mosq->inflight_messages : %s\n", mosq->inflight_messages);
queue_status = _mosquitto_message_queue(mosq, message, mosq_md_out);
if(queue_status == 0){
if(qos == 1){
message->state = mosq_ms_wait_for_puback;
}else if(qos == 2){
message->state = mosq_ms_wait_for_pubrec;
}
pthread_mutex_unlock(&mosq->out_message_mutex);
return _mosquitto_send_publish(mosq, message->msg.mid, message->msg.topic, message->msg.payloadlen, message->msg.payload, message->msg.qos, message->msg.retain, message->dup);
}else{
message->state = mosq_ms_invalid;
pthread_mutex_unlock(&mosq->out_message_mutex);
return MOSQ_ERR_SUCCESS;
}
}
}
int _mosquitto_handle_publish(struct mosquitto *mosq)
{
uint8_t header;
struct mosquitto_message_all *message;
int rc = 0;
uint16_t mid;
assert(mosq);
message = _mosquitto_calloc(1, sizeof(struct mosquitto_message_all));
if(!message) return MOSQ_ERR_NOMEM;
header = mosq->in_packet.command;
message->direction = mosq_md_in;
message->dup = (header & 0x08)>>3;
message->msg.qos = (header & 0x06)>>1;
message->msg.retain = (header & 0x01);
rc = _mosquitto_read_string(&mosq->in_packet, &message->msg.topic);
if(rc){
_mosquitto_message_cleanup(&message);
return rc;
}
rc = _mosquitto_fix_sub_topic(&message->msg.topic);
if(rc){
_mosquitto_message_cleanup(&message);
return rc;
}
if(!strlen(message->msg.topic)){
_mosquitto_message_cleanup(&message);
return MOSQ_ERR_PROTOCOL;
}
if(message->msg.qos > 0){
rc = _mosquitto_read_uint16(&mosq->in_packet, &mid);
if(rc){
_mosquitto_message_cleanup(&message);
return rc;
}
message->msg.mid = (int)mid;
}
message->msg.payloadlen = mosq->in_packet.remaining_length - mosq->in_packet.pos;
if(message->msg.payloadlen){
message->msg.payload = _mosquitto_calloc(message->msg.payloadlen+1, sizeof(uint8_t));
rc = _mosquitto_read_bytes(&mosq->in_packet, message->msg.payload, message->msg.payloadlen);
if(rc){
_mosquitto_message_cleanup(&message);
return rc;
}
}
_mosquitto_log_printf(mosq, MOSQ_LOG_DEBUG,
"Client %s received PUBLISH (d%d, q%d, r%d, m%d, '%s', ... (%ld bytes))",
mosq->id, message->dup, message->msg.qos, message->msg.retain,
message->msg.mid, message->msg.topic,
(long)message->msg.payloadlen);
message->timestamp = mosquitto_time();
switch(message->msg.qos){
case 0:
pthread_mutex_lock(&mosq->callback_mutex);
if(mosq->on_message){
mosq->in_callback = true;
mosq->on_message(mosq, mosq->userdata, &message->msg);
mosq->in_callback = false;
}
pthread_mutex_unlock(&mosq->callback_mutex);
_mosquitto_message_cleanup(&message);
return MOSQ_ERR_SUCCESS;
case 1:
rc = _mosquitto_send_puback(mosq, message->msg.mid);
pthread_mutex_lock(&mosq->callback_mutex);
if(mosq->on_message){
mosq->in_callback = true;
mosq->on_message(mosq, mosq->userdata, &message->msg);
mosq->in_callback = false;
}
pthread_mutex_unlock(&mosq->callback_mutex);
_mosquitto_message_cleanup(&message);
return rc;
case 2:
rc = _mosquitto_send_pubrec(mosq, message->msg.mid);
message->state = mosq_ms_wait_for_pubrel;
pthread_mutex_lock(&mosq->message_mutex);
_mosquitto_message_queue(mosq, message, true);
pthread_mutex_unlock(&mosq->message_mutex);
return rc;
default:
return MOSQ_ERR_PROTOCOL;
}
}