/**
* @brief Client received callback function.
* @param arg: contain the ip link information
* @param pdata: received data
* @param len: the lenght of received data
* @retval None
*/
void ICACHE_FLASH_ATTR
mqtt_tcpclient_recv(void *arg, char *pdata, unsigned short len)
{
INFO("TCP: data received %d bytes\r\n", len);
uint8_t msg_type;
uint8_t msg_qos;
uint16_t msg_id;
struct espconn *pCon = (struct espconn*)arg;
MQTT_Client *client = (MQTT_Client *)pCon->reverse;
if(len > MQTT_BUF_SIZE || len == 0)
{
INFO("receive length is invalid.\n");
return;
}
os_memcpy(client->mqtt_state.in_buffer + client->mqtt_state.message_length_read, pdata, len);
client->mqtt_state.message_length_read += len;
READPACKET:
if(client->mqtt_state.message_length_read == 1)
{
INFO("not enough data for read package length.\n!");
return;
}
client->mqtt_state.message_length = mqtt_get_total_length(client->mqtt_state.in_buffer, client->mqtt_state.message_length_read);
INFO("message length:%d\n", client->mqtt_state.message_length);
show_package(client->mqtt_state.in_buffer, client->mqtt_state.message_length_read);
if(client->mqtt_state.message_length > client->mqtt_state.message_length_read)
{
INFO("not enough data.\n");
return;
}
msg_type = mqtt_get_type(client->mqtt_state.in_buffer);
msg_qos = mqtt_get_qos(client->mqtt_state.in_buffer);
msg_id = mqtt_get_id(client->mqtt_state.in_buffer, client->mqtt_state.message_length);
INFO("client->connstate:%d, type:%d, Qos:%d, id:%d, message length:%d\n", client->connState, msg_type, msg_qos, \
msg_id, client->mqtt_state.message_length);
switch(client->connState)
{
case MQTT_CONNECT_SENDING:
if(msg_type == MQTT_MSG_TYPE_CONNACK)
{
if(client->mqtt_state.pending_msg_type != MQTT_MSG_TYPE_CONNECT)
{
INFO("MQTT: Invalid packet\r\n");
if(client->security)
{
espconn_secure_disconnect(client->pCon);
}
else
{
espconn_disconnect(client->pCon);
}
}
else
{
INFO("MQTT: Connected to %s:%d\r\n", client->host, client->port);
client->connState = MQTT_DATA;
if(client->connectedCb)
client->connectedCb((uint32_t*)client);
}
}
break;
case MQTT_DATA:
switch(msg_type)
{
case MQTT_MSG_TYPE_SUBACK:
if(client->mqtt_state.pending_msg_type == MQTT_MSG_TYPE_SUBSCRIBE && client->mqtt_state.pending_msg_id == msg_id)
INFO("MQTT: Subscribe successful\r\n");
break;
case MQTT_MSG_TYPE_UNSUBACK:
if(client->mqtt_state.pending_msg_type == MQTT_MSG_TYPE_UNSUBSCRIBE && client->mqtt_state.pending_msg_id == msg_id)
INFO("MQTT: UnSubscribe successful\r\n");
break;
case MQTT_MSG_TYPE_PUBLISH:
if(msg_qos == 1)
client->mqtt_state.outbound_message = mqtt_msg_puback(&client->mqtt_state.mqtt_connection, msg_id);
else if(msg_qos == 2)
client->mqtt_state.outbound_message = mqtt_msg_pubrec(&client->mqtt_state.mqtt_connection, msg_id);
if(msg_qos == 1 || msg_qos == 2)
{
INFO("MQTT: Queue response QoS: %d\r\n", msg_qos);
if(QUEUE_Puts(&client->msgQueue, client->mqtt_state.outbound_message->data,\
client->mqtt_state.outbound_message->length) == -1)
{
INFO("MQTT: Queue full\r\n");
}
}
show_package(client->mqtt_state.in_buffer, client->mqtt_state.message_length);
deliver_publish(client, client->mqtt_state.in_buffer, client->mqtt_state.message_length);
break;
case MQTT_MSG_TYPE_PUBACK:
if(client->mqtt_state.pending_msg_type == MQTT_MSG_TYPE_PUBLISH && client->mqtt_state.pending_msg_id == msg_id)
{
INFO("MQTT: received MQTT_MSG_TYPE_PUBACK, finish QoS1 publish\r\n");
}
break;
case MQTT_MSG_TYPE_PUBREC:
client->mqtt_state.outbound_message = mqtt_msg_pubrel(&client->mqtt_state.mqtt_connection, msg_id);
if(QUEUE_Puts(&client->msgQueue, client->mqtt_state.outbound_message->data, client->mqtt_state.outbound_message->length) == -1)
{
INFO("MQTT: Queue full\r\n");
}
break;
case MQTT_MSG_TYPE_PUBREL:
client->mqtt_state.outbound_message = mqtt_msg_pubcomp(&client->mqtt_state.mqtt_connection, msg_id);
if(QUEUE_Puts(&client->msgQueue, client->mqtt_state.outbound_message->data, client->mqtt_state.outbound_message->length) == -1)
{
INFO("MQTT: Queue full\r\n");
}
break;
case MQTT_MSG_TYPE_PUBCOMP:
if(client->mqtt_state.pending_msg_type == MQTT_MSG_TYPE_PUBLISH && client->mqtt_state.pending_msg_id == msg_id)
{
INFO("MQTT: receive MQTT_MSG_TYPE_PUBCOMP, finish QoS2 publish\r\n");
}
break;
case MQTT_MSG_TYPE_PINGREQ:
client->mqtt_state.outbound_message = mqtt_msg_pingresp(&client->mqtt_state.mqtt_connection);
if(QUEUE_Puts(&client->msgQueue, client->mqtt_state.outbound_message->data, client->mqtt_state.outbound_message->length) == -1)
{
INFO("MQTT: Queue full\r\n");
}
break;
case MQTT_MSG_TYPE_PINGRESP:
INFO("receive a heart beat response!\n");
client->heart_beat_flag = 1;
break;
}
break;
}
// process package adhesive.
uint16_t remain_length = client->mqtt_state.message_length_read - client->mqtt_state.message_length;
client->mqtt_state.message_length_read = remain_length;
INFO("client->mqtt_state.message_length_read = %d\n", client->mqtt_state.message_length_read);
INFO("client->mqtt_state.message_length = %d\n", client->mqtt_state.message_length);
INFO("the package is\n");
show_package(client->mqtt_state.in_buffer, client->mqtt_state.message_length);
if(remain_length > 0)
{
int i = 0;
for(i = 0; i< remain_length; i++)
{
client->mqtt_state.in_buffer[i] = \
client->mqtt_state.in_buffer[client->mqtt_state.message_length_read - remain_length + i];
}
INFO("Get another published message\r\n");
goto READPACKET;
}
system_os_post(MQTT_TASK_PRIO, 0, (os_param_t)client);
}
/**
* @brief Client received callback function.
* @param arg: contain the ip link information
* @param pdata: received data
* @param len: the lenght of received data
* @retval None
*/
void ICACHE_FLASH_ATTR
mqtt_tcpclient_recv(void *arg, char *pdata, unsigned short len)
{
uint8_t msg_type;
uint8_t msg_qos;
uint16_t msg_id;
struct espconn *pCon = (struct espconn*)arg;
MQTT_Client *client = (MQTT_Client *)pCon->reverse;
//spam INFO("TCP: data received\r\n");
if(len < MQTT_BUF_SIZE && len > 0){
memcpy(client->mqtt_state.in_buffer, pdata, len);
switch(client->connState){
case MQTT_CONNECT_SENDING:
if(mqtt_get_type(client->mqtt_state.in_buffer) != MQTT_MSG_TYPE_CONNACK){
//spam INFO("MQTT: Invalid packet\r\n");
if(client->security){
espconn_secure_disconnect(client->pCon);
}
else {
espconn_disconnect(client->pCon);
}
} else {
//spam INFO("MQTT: Connected to %s:%d\r\n", client->host, client->port);
client->connState = MQTT_DATA;
if(client->connectedCb)
client->connectedCb((uint32_t*)client);
}
break;
case MQTT_DATA:
client->mqtt_state.message_length_read = len;
client->mqtt_state.message_length = mqtt_get_total_length(client->mqtt_state.in_buffer, client->mqtt_state.message_length_read);
msg_type = mqtt_get_type(client->mqtt_state.in_buffer);
msg_qos = mqtt_get_qos(client->mqtt_state.in_buffer);
msg_id = mqtt_get_id(client->mqtt_state.in_buffer, client->mqtt_state.in_buffer_length);
switch(msg_type)
{
case MQTT_MSG_TYPE_SUBACK:
//spam if(client->mqtt_state.pending_msg_type == MQTT_MSG_TYPE_SUBSCRIBE && client->mqtt_state.pending_msg_id == msg_id)
//spam INFO("MQTT: Subscribe successful to %s:%d\r\n", client->host, client->port);
break;
case MQTT_MSG_TYPE_UNSUBACK:
//spam if(client->mqtt_state.pending_msg_type == MQTT_MSG_TYPE_UNSUBSCRIBE && client->mqtt_state.pending_msg_id == msg_id)
//spam INFO("MQTT: UnSubscribe successful\r\n");
break;
case MQTT_MSG_TYPE_PUBLISH:
if(msg_qos == 1)
client->mqtt_state.outbound_message = mqtt_msg_puback(&client->mqtt_state.mqtt_connection, msg_id);
else if(msg_qos == 2)
client->mqtt_state.outbound_message = mqtt_msg_pubrec(&client->mqtt_state.mqtt_connection, msg_id);
deliver_publish(client, client->mqtt_state.in_buffer, client->mqtt_state.message_length_read);
break;
case MQTT_MSG_TYPE_PUBACK:
if(client->mqtt_state.pending_msg_type == MQTT_MSG_TYPE_PUBLISH && client->mqtt_state.pending_msg_id == msg_id){
//spam INFO("MQTT: Publish successful\r\n");
if(client->publishedCb)
client->publishedCb((uint32_t*)client);
}
break;
case MQTT_MSG_TYPE_PUBREC:
client->mqtt_state.outbound_message = mqtt_msg_pubrel(&client->mqtt_state.mqtt_connection, msg_id);
break;
case MQTT_MSG_TYPE_PUBREL:
client->mqtt_state.outbound_message = mqtt_msg_pubcomp(&client->mqtt_state.mqtt_connection, msg_id);
break;
case MQTT_MSG_TYPE_PUBCOMP:
if(client->mqtt_state.pending_msg_type == MQTT_MSG_TYPE_PUBLISH && client->mqtt_state.pending_msg_id == msg_id){
//spam INFO("MQTT: Public successful\r\n");
if(client->publishedCb)
client->publishedCb((uint32_t*)client);
}
break;
case MQTT_MSG_TYPE_PINGREQ:
client->mqtt_state.outbound_message = mqtt_msg_pingresp(&client->mqtt_state.mqtt_connection);
break;
case MQTT_MSG_TYPE_PINGRESP:
// Ignore
break;
}
// NOTE: this is done down here and not in the switch case above
// because the PSOCK_READBUF_LEN() won't work inside a switch
// statement due to the way protothreads resume.
if(msg_type == MQTT_MSG_TYPE_PUBLISH)
{
uint16_t len;
// adjust message_length and message_length_read so that
// they only account for the publish data and not the rest of the
// message, this is done so that the offset passed with the
// continuation event is the offset within the publish data and
// not the offset within the message as a whole.
len = client->mqtt_state.message_length_read;
mqtt_get_publish_data(client->mqtt_state.in_buffer, &len);
len = client->mqtt_state.message_length_read - len;
client->mqtt_state.message_length -= len;
client->mqtt_state.message_length_read -= len;
if(client->mqtt_state.message_length_read < client->mqtt_state.message_length)
{
//client->connState = MQTT_PUBLISH_RECV;
}
}
break;
case MQTT_PUBLISH_RECV:
/*
* Long publish message, not implement yet
* TODO: Implement method used deliver_publish_continuation
*/
break;
}
}
system_os_post(MQTT_TASK_PRIO, 0, (os_param_t)client);
}
/**
* @brief Client received callback function.
* @param arg: contain the ip link information
* @param pdata: received data
* @param len: the lenght of received data
* @retval None
*/
void ICACHE_FLASH_ATTR
mqtt_tcpclient_recv(void *arg, char *pdata, unsigned short len)
{
uint8_t msg_type;
uint8_t msg_qos;
uint16_t msg_id;
struct espconn *pCon = (struct espconn*)arg;
MQTT_Client *client = (MQTT_Client *)pCon->reverse;
READPACKET:
INFO("TCP: data received %d bytes\r\n", len);
if(len < MQTT_BUF_SIZE && len > 0){
os_memcpy(client->mqtt_state.in_buffer, pdata, len);
msg_type = mqtt_get_type(client->mqtt_state.in_buffer);
msg_qos = mqtt_get_qos(client->mqtt_state.in_buffer);
msg_id = mqtt_get_id(client->mqtt_state.in_buffer, client->mqtt_state.in_buffer_length);
switch(client->connState){
case MQTT_CONNECT_SENDING:
if(msg_type == MQTT_MSG_TYPE_CONNACK){
if(client->mqtt_state.pending_msg_type != MQTT_MSG_TYPE_CONNECT){
INFO("MQTT: Invalid packet\r\n");
if(client->security){
espconn_secure_disconnect(client->pCon);
}
else {
espconn_disconnect(client->pCon);
}
} else {
INFO("MQTT: Connected to %s:%d\r\n", client->host, client->port);
client->connState = MQTT_DATA;
if(client->connectedCb)
client->connectedCb((uint32_t*)client);
}
}
break;
case MQTT_DATA:
client->mqtt_state.message_length_read = len;
client->mqtt_state.message_length = mqtt_get_total_length(client->mqtt_state.in_buffer, client->mqtt_state.message_length_read);
switch(msg_type)
{
case MQTT_MSG_TYPE_SUBACK:
if(client->mqtt_state.pending_msg_type == MQTT_MSG_TYPE_SUBSCRIBE && client->mqtt_state.pending_msg_id == msg_id)
INFO("MQTT: Subscribe successful\r\n");
break;
case MQTT_MSG_TYPE_UNSUBACK:
if(client->mqtt_state.pending_msg_type == MQTT_MSG_TYPE_UNSUBSCRIBE && client->mqtt_state.pending_msg_id == msg_id)
INFO("MQTT: UnSubscribe successful\r\n");
break;
case MQTT_MSG_TYPE_PUBLISH:
if(msg_qos == 1)
client->mqtt_state.outbound_message = mqtt_msg_puback(&client->mqtt_state.mqtt_connection, msg_id);
else if(msg_qos == 2)
client->mqtt_state.outbound_message = mqtt_msg_pubrec(&client->mqtt_state.mqtt_connection, msg_id);
if(msg_qos == 1 || msg_qos == 2){
INFO("MQTT: Queue response QoS: %d\r\n", msg_qos);
if(QUEUE_Puts(&client->msgQueue, client->mqtt_state.outbound_message->data, client->mqtt_state.outbound_message->length) == -1){
INFO("MQTT: Queue full\r\n");
}
}
deliver_publish(client, client->mqtt_state.in_buffer, client->mqtt_state.message_length_read);
break;
case MQTT_MSG_TYPE_PUBACK:
if(client->mqtt_state.pending_msg_type == MQTT_MSG_TYPE_PUBLISH && client->mqtt_state.pending_msg_id == msg_id){
INFO("MQTT: received MQTT_MSG_TYPE_PUBACK, finish QoS1 publish\r\n");
}
break;
case MQTT_MSG_TYPE_PUBREC:
client->mqtt_state.outbound_message = mqtt_msg_pubrel(&client->mqtt_state.mqtt_connection, msg_id);
if(QUEUE_Puts(&client->msgQueue, client->mqtt_state.outbound_message->data, client->mqtt_state.outbound_message->length) == -1){
INFO("MQTT: Queue full\r\n");
}
break;
case MQTT_MSG_TYPE_PUBREL:
client->mqtt_state.outbound_message = mqtt_msg_pubcomp(&client->mqtt_state.mqtt_connection, msg_id);
if(QUEUE_Puts(&client->msgQueue, client->mqtt_state.outbound_message->data, client->mqtt_state.outbound_message->length) == -1){
INFO("MQTT: Queue full\r\n");
}
break;
case MQTT_MSG_TYPE_PUBCOMP:
if(client->mqtt_state.pending_msg_type == MQTT_MSG_TYPE_PUBLISH && client->mqtt_state.pending_msg_id == msg_id){
INFO("MQTT: receive MQTT_MSG_TYPE_PUBCOMP, finish QoS2 publish\r\n");
}
break;
case MQTT_MSG_TYPE_PINGREQ:
client->mqtt_state.outbound_message = mqtt_msg_pingresp(&client->mqtt_state.mqtt_connection);
if(QUEUE_Puts(&client->msgQueue, client->mqtt_state.outbound_message->data, client->mqtt_state.outbound_message->length) == -1){
INFO("MQTT: Queue full\r\n");
}
break;
case MQTT_MSG_TYPE_PINGRESP:
// Ignore
break;
}
// NOTE: this is done down here and not in the switch case above
// because the PSOCK_READBUF_LEN() won't work inside a switch
// statement due to the way protothreads resume.
if(msg_type == MQTT_MSG_TYPE_PUBLISH)
{
len = client->mqtt_state.message_length_read;
if(client->mqtt_state.message_length < client->mqtt_state.message_length_read)
{
//client->connState = MQTT_PUBLISH_RECV;
//Not Implement yet
len -= client->mqtt_state.message_length;
pdata += client->mqtt_state.message_length;
INFO("Get another published message\r\n");
goto READPACKET;
}
}
break;
}
} else {
INFO("ERROR: Message too long\r\n");
}
system_os_post(MQTT_TASK_PRIO, 0, (os_param_t)client);
}
/**
* @brief Client received callback function.
* @param arg: contain the ip link information
* @param pdata: received data
* @param len: the length of received data
* @retval None
*/
static void ICACHE_FLASH_ATTR
mqtt_tcpclient_recv(void* arg, char* pdata, unsigned short len) {
//os_printf("MQTT: recv CB\n");
uint8_t msg_type;
uint16_t msg_id;
uint16_t msg_len;
struct espconn* pCon = (struct espconn*)arg;
MQTT_Client* client = (MQTT_Client *)pCon->reverse;
if (client == NULL) return; // aborted connection
//os_printf("MQTT: Data received %d bytes\n", len);
do {
// append data to our buffer
int avail = client->in_buffer_size - client->in_buffer_filled;
if (len <= avail) {
os_memcpy(client->in_buffer + client->in_buffer_filled, pdata, len);
client->in_buffer_filled += len;
len = 0;
} else {
os_memcpy(client->in_buffer + client->in_buffer_filled, pdata, avail);
client->in_buffer_filled += avail;
len -= avail;
pdata += avail;
}
// check out what's at the head of the buffer
msg_type = mqtt_get_type(client->in_buffer);
msg_id = mqtt_get_id(client->in_buffer, client->in_buffer_size);
msg_len = mqtt_get_total_length(client->in_buffer, client->in_buffer_size);
if (msg_len > client->in_buffer_size) {
// oops, too long a message for us to digest, disconnect and hope for a miracle
os_printf("MQTT: Too long a message (%d bytes)\n", msg_len);
mqtt_doAbort(client);
return;
}
// check whether what's left in the buffer is a complete message
if (msg_len > client->in_buffer_filled) break;
if (client->connState != MQTT_CONNECTED) {
// why are we receiving something??
DBG_MQTT("MQTT ERROR: recv in invalid state %d\n", client->connState);
mqtt_doAbort(client);
return;
}
// we are connected and are sending/receiving data messages
uint8_t pending_msg_type = 0;
uint16_t pending_msg_id = 0;
if (client->pending_buffer != NULL) {
pending_msg_type = mqtt_get_type(client->pending_buffer->data);
pending_msg_id = mqtt_get_id(client->pending_buffer->data, client->pending_buffer->filled);
}
DBG_MQTT("MQTT: Recv type=%s id=%04X len=%d; Pend type=%s id=%02X\n",
mqtt_msg_type[msg_type], msg_id, msg_len, mqtt_msg_type[pending_msg_type],pending_msg_id);
switch (msg_type) {
case MQTT_MSG_TYPE_CONNACK:
//DBG_MQTT("MQTT: Connect successful\n");
// callbacks for internal and external clients
if (client->connectedCb) client->connectedCb((uint32_t*)client);
if (client->cmdConnectedCb) client->cmdConnectedCb((uint32_t*)client);
client->reconTimeout = 1; // reset the reconnect backoff
break;
case MQTT_MSG_TYPE_SUBACK:
if (pending_msg_type == MQTT_MSG_TYPE_SUBSCRIBE && pending_msg_id == msg_id) {
//DBG_MQTT("MQTT: Subscribe successful\n");
client->pending_buffer = PktBuf_ShiftFree(client->pending_buffer);
}
break;
case MQTT_MSG_TYPE_UNSUBACK:
if (pending_msg_type == MQTT_MSG_TYPE_UNSUBSCRIBE && pending_msg_id == msg_id) {
//DBG_MQTT("MQTT: Unsubscribe successful\n");
client->pending_buffer = PktBuf_ShiftFree(client->pending_buffer);
}
break;
case MQTT_MSG_TYPE_PUBACK: // ack for a publish we sent
if (pending_msg_type == MQTT_MSG_TYPE_PUBLISH && pending_msg_id == msg_id) {
//DBG_MQTT("MQTT: QoS1 Publish successful\n");
client->pending_buffer = PktBuf_ShiftFree(client->pending_buffer);
}
break;
case MQTT_MSG_TYPE_PUBREC: // rec for a publish we sent
if (pending_msg_type == MQTT_MSG_TYPE_PUBLISH && pending_msg_id == msg_id) {
//DBG_MQTT("MQTT: QoS2 publish cont\n");
client->pending_buffer = PktBuf_ShiftFree(client->pending_buffer);
// we need to send PUBREL
mqtt_msg_pubrel(&client->mqtt_connection, msg_id);
mqtt_enq_message(client, client->mqtt_connection.message.data,
client->mqtt_connection.message.length);
}
break;
case MQTT_MSG_TYPE_PUBCOMP: // comp for a pubrel we sent (originally publish we sent)
if (pending_msg_type == MQTT_MSG_TYPE_PUBREL && pending_msg_id == msg_id) {
//DBG_MQTT("MQTT: QoS2 Publish successful\n");
client->pending_buffer = PktBuf_ShiftFree(client->pending_buffer);
}
break;
case MQTT_MSG_TYPE_PUBLISH: { // incoming publish
// we may need to ACK the publish
uint8_t msg_qos = mqtt_get_qos(client->in_buffer);
#ifdef MQTT_DBG
uint16_t topic_length = msg_len;
os_printf("MQTT: Recv PUBLISH qos=%d %s\n", msg_qos,
mqtt_get_publish_topic(client->in_buffer, &topic_length));
#endif
if (msg_qos == 1) mqtt_msg_puback(&client->mqtt_connection, msg_id);
if (msg_qos == 2) mqtt_msg_pubrec(&client->mqtt_connection, msg_id);
if (msg_qos == 1 || msg_qos == 2) {
mqtt_enq_message(client, client->mqtt_connection.message.data,
client->mqtt_connection.message.length);
}
// send the publish message to clients
deliver_publish(client, client->in_buffer, msg_len);
}
break;
case MQTT_MSG_TYPE_PUBREL: // rel for a rec we sent (originally publish received)
if (pending_msg_type == MQTT_MSG_TYPE_PUBREC && pending_msg_id == msg_id) {
//DBG_MQTT("MQTT: Cont QoS2 recv\n");
client->pending_buffer = PktBuf_ShiftFree(client->pending_buffer);
// we need to send PUBCOMP
mqtt_msg_pubcomp(&client->mqtt_connection, msg_id);
mqtt_enq_message(client, client->mqtt_connection.message.data,
client->mqtt_connection.message.length);
}
break;
case MQTT_MSG_TYPE_PINGRESP:
client->keepAliveAckTick = 0;
break;
}
// Shift out the message and see whether we have another one
if (msg_len < client->in_buffer_filled)
os_memcpy(client->in_buffer, client->in_buffer+msg_len, client->in_buffer_filled-msg_len);
client->in_buffer_filled -= msg_len;
} while(client->in_buffer_filled > 0 || len > 0);
// Send next packet out, if possible
if (!client->sending && client->pending_buffer == NULL && client->msgQueue != NULL) {
mqtt_send_message(client);
}
}