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esp_mqtt/mqtt/mqtt.c

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32 KiB
C
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/* mqtt.c
* Protocol: http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/os/mqtt-v3.1.1-os.html
*
* Copyright (c) 2014-2015, Tuan PM <tuanpm at live dot com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Redis nor the names of its contributors may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "user_interface.h"
#include "osapi.h"
#include "espconn.h"
#include "os_type.h"
#include "mem.h"
#include "mqtt_msg.h"
#include "debug.h"
#include "user_config.h"
#include "mqtt.h"
#include "queue.h"
#define MQTT_TASK_PRIO 2
#define MQTT_TASK_QUEUE_SIZE 1
#define MQTT_SEND_TIMOUT 5
#ifndef MQTT_SSL_SIZE
#define MQTT_SSL_SIZE 5120
#endif
#ifndef QUEUE_BUFFER_SIZE
#define QUEUE_BUFFER_SIZE 2048
#endif
unsigned char *default_certificate;
unsigned int default_certificate_len = 0;
unsigned char *default_private_key;
unsigned int default_private_key_len = 0;
os_event_t mqtt_procTaskQueue[MQTT_TASK_QUEUE_SIZE];
#ifdef PROTOCOL_NAMEv311
LOCAL uint8_t zero_len_id[2] = { 0, 0 };
#endif
LOCAL void ICACHE_FLASH_ATTR mqtt_dns_found(const char *name, ip_addr_t * ipaddr, void *arg) {
struct espconn *pConn = (struct espconn *)arg;
MQTT_Client *client = (MQTT_Client *) pConn->reverse;
if (ipaddr == NULL) {
MQTT_INFO("DNS: Found, but got no ip, try to reconnect\r\n");
client->connState = TCP_RECONNECT_REQ;
return;
}
MQTT_INFO("DNS: found ip %d.%d.%d.%d\n",
*((uint8 *) & ipaddr->addr),
*((uint8 *) & ipaddr->addr + 1), *((uint8 *) & ipaddr->addr + 2), *((uint8 *) & ipaddr->addr + 3));
if (client->ip.addr == 0 && ipaddr->addr != 0) {
os_memcpy(client->pCon->proto.tcp->remote_ip, &ipaddr->addr, 4);
if (client->security) {
#ifdef MQTT_SSL_ENABLE
espconn_secure_set_size(ESPCONN_CLIENT, MQTT_SSL_SIZE);
espconn_secure_connect(client->pCon);
#else
MQTT_INFO("TCP: Do not support SSL\r\n");
#endif
} else {
espconn_connect(client->pCon);
}
client->connState = TCP_CONNECTING;
MQTT_INFO("TCP: connecting...\r\n");
}
system_os_post(MQTT_TASK_PRIO, 0, (os_param_t) client);
}
LOCAL void ICACHE_FLASH_ATTR deliver_publish(MQTT_Client * client, uint8_t * message, int length) {
mqtt_event_data_t event_data;
event_data.topic_length = length;
event_data.topic = mqtt_get_publish_topic(message, &event_data.topic_length);
event_data.data_length = length;
event_data.data = mqtt_get_publish_data(message, &event_data.data_length);
if (client->dataCb)
client->dataCb((uint32_t *) client, event_data.topic, event_data.topic_length, event_data.data,
event_data.data_length);
}
void ICACHE_FLASH_ATTR mqtt_send_keepalive(MQTT_Client * client) {
MQTT_INFO("\r\nMQTT: Send keepalive packet to %s:%d!\r\n", client->host, client->port);
client->mqtt_state.outbound_message = mqtt_msg_pingreq(&client->mqtt_state.mqtt_connection);
client->mqtt_state.pending_msg_type = MQTT_MSG_TYPE_PINGREQ;
client->mqtt_state.pending_msg_type = mqtt_get_type(client->mqtt_state.outbound_message->data);
client->mqtt_state.pending_msg_id =
mqtt_get_id(client->mqtt_state.outbound_message->data, client->mqtt_state.outbound_message->length);
client->sendTimeout = MQTT_SEND_TIMOUT;
MQTT_INFO("MQTT: Sending, type: %d, id: %04X\r\n", client->mqtt_state.pending_msg_type,
client->mqtt_state.pending_msg_id);
err_t result = ESPCONN_OK;
if (client->security) {
#ifdef MQTT_SSL_ENABLE
result =
espconn_secure_send(client->pCon, client->mqtt_state.outbound_message->data,
client->mqtt_state.outbound_message->length);
#else
MQTT_INFO("TCP: Do not support SSL\r\n");
#endif
} else {
result =
espconn_send(client->pCon, client->mqtt_state.outbound_message->data,
client->mqtt_state.outbound_message->length);
}
client->mqtt_state.outbound_message = NULL;
if (ESPCONN_OK == result) {
client->keepAliveTick = 0;
client->connState = MQTT_DATA;
system_os_post(MQTT_TASK_PRIO, 0, (os_param_t) client);
} else {
client->connState = TCP_RECONNECT_DISCONNECTING;
system_os_post(MQTT_TASK_PRIO, 0, (os_param_t) client);
}
}
/**
* @brief Delete tcp client and free all memory
* @param mqttClient: The mqtt client which contain TCP client
* @retval None
*/
void ICACHE_FLASH_ATTR mqtt_tcpclient_delete(MQTT_Client * mqttClient) {
if (mqttClient->pCon != NULL) {
MQTT_INFO("TCP: Free memory\r\n");
// Force abort connections
espconn_abort(mqttClient->pCon);
// Delete connections
espconn_delete(mqttClient->pCon);
if (mqttClient->pCon->proto.tcp) {
os_free(mqttClient->pCon->proto.tcp);
mqttClient->pCon->proto.tcp = NULL;
}
os_free(mqttClient->pCon);
mqttClient->pCon = NULL;
}
}
/**
* @brief Delete MQTT client and free all memory
* @param mqttClient: The mqtt client
* @retval None
*/
void ICACHE_FLASH_ATTR mqtt_client_delete(MQTT_Client * mqttClient) {
if (mqttClient == NULL)
return;
if (mqttClient->pCon != NULL) {
mqtt_tcpclient_delete(mqttClient);
}
if (mqttClient->host != NULL) {
os_free(mqttClient->host);
mqttClient->host = NULL;
}
if (mqttClient->user_data != NULL) {
os_free(mqttClient->user_data);
mqttClient->user_data = NULL;
}
if (mqttClient->mqtt_state.in_buffer != NULL) {
os_free(mqttClient->mqtt_state.in_buffer);
mqttClient->mqtt_state.in_buffer = NULL;
}
if (mqttClient->mqtt_state.out_buffer != NULL) {
os_free(mqttClient->mqtt_state.out_buffer);
mqttClient->mqtt_state.out_buffer = NULL;
}
if (mqttClient->mqtt_state.outbound_message != NULL) {
if (mqttClient->mqtt_state.outbound_message->data != NULL) {
os_free(mqttClient->mqtt_state.outbound_message->data);
mqttClient->mqtt_state.outbound_message->data = NULL;
}
}
if (mqttClient->mqtt_state.mqtt_connection.buffer != NULL) {
// Already freed but not NULL
mqttClient->mqtt_state.mqtt_connection.buffer = NULL;
}
if (mqttClient->connect_info.client_id != NULL) {
#ifdef PROTOCOL_NAMEv311
/* Don't attempt to free if it's the zero_len array */
if (((uint8_t *) mqttClient->connect_info.client_id) != zero_len_id)
os_free(mqttClient->connect_info.client_id);
#else
os_free(mqttClient->connect_info.client_id);
#endif
mqttClient->connect_info.client_id = NULL;
}
if (mqttClient->connect_info.username != NULL) {
os_free(mqttClient->connect_info.username);
mqttClient->connect_info.username = NULL;
}
if (mqttClient->connect_info.password != NULL) {
os_free(mqttClient->connect_info.password);
mqttClient->connect_info.password = NULL;
}
if (mqttClient->connect_info.will_topic != NULL) {
os_free(mqttClient->connect_info.will_topic);
mqttClient->connect_info.will_topic = NULL;
}
if (mqttClient->connect_info.will_data != NULL) {
os_free(mqttClient->connect_info.will_data);
mqttClient->connect_info.will_data = NULL;
}
if (mqttClient->msgQueue.buf != NULL) {
os_free(mqttClient->msgQueue.buf);
mqttClient->msgQueue.buf = NULL;
}
// Initialize state
mqttClient->connState = WIFI_INIT;
// Clear callback functions to avoid abnormal callback
mqttClient->connectedCb = NULL;
mqttClient->disconnectedCb = NULL;
mqttClient->publishedCb = NULL;
mqttClient->timeoutCb = NULL;
mqttClient->dataCb = NULL;
MQTT_INFO("MQTT: client already deleted\r\n");
}
/**
* @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;
uint8_t msg_conn_ret;
struct espconn *pCon = (struct espconn *)arg;
MQTT_Client *client = (MQTT_Client *) pCon->reverse;
//client->keepAliveTick = 0;
READPACKET:
MQTT_INFO("TCP: data received %d bytes\r\n", len);
// MQTT_INFO("STATE: %d\r\n", client->connState);
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) {
MQTT_INFO("MQTT: Invalid packet\r\n");
if (client->security) {
#ifdef MQTT_SSL_ENABLE
espconn_secure_disconnect(client->pCon);
#else
MQTT_INFO("TCP: Do not support SSL\r\n");
#endif
} else {
espconn_disconnect(client->pCon);
}
} else {
msg_conn_ret = mqtt_get_connect_return_code(client->mqtt_state.in_buffer);
switch (msg_conn_ret) {
case CONNECTION_ACCEPTED:
MQTT_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 CONNECTION_REFUSE_PROTOCOL:
case CONNECTION_REFUSE_SERVER_UNAVAILABLE:
case CONNECTION_REFUSE_BAD_USERNAME:
case CONNECTION_REFUSE_NOT_AUTHORIZED:
MQTT_INFO("MQTT: Connection refuse, reason code: %d\r\n", msg_conn_ret);
default:
if (client->security) {
#ifdef MQTT_SSL_ENABLE
espconn_secure_disconnect(client->pCon);
#else
MQTT_INFO("TCP: Do not support SSL\r\n");
#endif
} else {
espconn_disconnect(client->pCon);
}
}
}
}
break;
case MQTT_DATA:
case MQTT_KEEPALIVE_SEND:
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)
MQTT_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)
MQTT_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) {
MQTT_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) {
MQTT_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) {
MQTT_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) {
MQTT_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) {
MQTT_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) {
MQTT_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) {
MQTT_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;
MQTT_INFO("Get another published message\r\n");
goto READPACKET;
}
}
break;
}
} else {
MQTT_INFO("ERROR: Message too long\r\n");
}
system_os_post(MQTT_TASK_PRIO, 0, (os_param_t) client);
}
/**
* @brief Client send over callback function.
* @param arg: contain the ip link information
* @retval None
*/
void ICACHE_FLASH_ATTR mqtt_tcpclient_sent_cb(void *arg) {
struct espconn *pCon = (struct espconn *)arg;
MQTT_Client *client = (MQTT_Client *) pCon->reverse;
MQTT_INFO("TCP: Sent\r\n");
client->sendTimeout = 0;
client->keepAliveTick = 0;
if ((client->connState == MQTT_DATA || client->connState == MQTT_KEEPALIVE_SEND)
&& client->mqtt_state.pending_msg_type == MQTT_MSG_TYPE_PUBLISH) {
if (client->publishedCb)
client->publishedCb((uint32_t *) client);
}
system_os_post(MQTT_TASK_PRIO, 0, (os_param_t) client);
}
void ICACHE_FLASH_ATTR mqtt_timer(void *arg) {
MQTT_Client *client = (MQTT_Client *) arg;
if (client->connState == MQTT_DATA) {
client->keepAliveTick++;
if (client->keepAliveTick > (client->mqtt_state.connect_info->keepalive / 2)) {
client->connState = MQTT_KEEPALIVE_SEND;
system_os_post(MQTT_TASK_PRIO, 0, (os_param_t) client);
}
} else if (client->connState == TCP_RECONNECT_REQ) {
client->reconnectTick++;
if (client->reconnectTick > MQTT_RECONNECT_TIMEOUT) {
client->reconnectTick = 0;
client->connState = TCP_RECONNECT;
system_os_post(MQTT_TASK_PRIO, 0, (os_param_t) client);
if (client->timeoutCb)
client->timeoutCb((uint32_t *) client);
}
}
if (client->sendTimeout > 0)
client->sendTimeout--;
}
void ICACHE_FLASH_ATTR mqtt_tcpclient_discon_cb(void *arg) {
struct espconn *pespconn = (struct espconn *)arg;
MQTT_Client *client = (MQTT_Client *) pespconn->reverse;
MQTT_INFO("TCP: Disconnected callback\r\n");
if (TCP_DISCONNECTING == client->connState) {
client->connState = TCP_DISCONNECTED;
} else if (MQTT_DELETING == client->connState) {
client->connState = MQTT_DELETED;
} else {
client->connState = TCP_RECONNECT_REQ;
}
if (client->disconnectedCb)
client->disconnectedCb((uint32_t *) client);
system_os_post(MQTT_TASK_PRIO, 0, (os_param_t) client);
}
/**
* @brief Tcp client connect success callback function.
* @param arg: contain the ip link information
* @retval None
*/
void ICACHE_FLASH_ATTR mqtt_tcpclient_connect_cb(void *arg) {
struct espconn *pCon = (struct espconn *)arg;
MQTT_Client *client = (MQTT_Client *) pCon->reverse;
espconn_regist_disconcb(client->pCon, mqtt_tcpclient_discon_cb);
espconn_regist_recvcb(client->pCon, mqtt_tcpclient_recv); ////////
espconn_regist_sentcb(client->pCon, mqtt_tcpclient_sent_cb); ///////
MQTT_INFO("MQTT: Connected to broker %s:%d\r\n", client->host, client->port);
mqtt_msg_init(&client->mqtt_state.mqtt_connection, client->mqtt_state.out_buffer,
client->mqtt_state.out_buffer_length);
client->mqtt_state.outbound_message =
mqtt_msg_connect(&client->mqtt_state.mqtt_connection, client->mqtt_state.connect_info);
client->mqtt_state.pending_msg_type = mqtt_get_type(client->mqtt_state.outbound_message->data);
client->mqtt_state.pending_msg_id =
mqtt_get_id(client->mqtt_state.outbound_message->data, client->mqtt_state.outbound_message->length);
client->sendTimeout = MQTT_SEND_TIMOUT;
MQTT_INFO("MQTT: Sending, type: %d, id: %04X\r\n", client->mqtt_state.pending_msg_type,
client->mqtt_state.pending_msg_id);
if (client->security) {
#ifdef MQTT_SSL_ENABLE
espconn_secure_send(client->pCon, client->mqtt_state.outbound_message->data,
client->mqtt_state.outbound_message->length);
#else
MQTT_INFO("TCP: Do not support SSL\r\n");
#endif
} else {
espconn_send(client->pCon, client->mqtt_state.outbound_message->data,
client->mqtt_state.outbound_message->length);
}
client->mqtt_state.outbound_message = NULL;
client->connState = MQTT_CONNECT_SENDING;
system_os_post(MQTT_TASK_PRIO, 0, (os_param_t) client);
}
/**
* @brief Tcp client connect repeat callback function.
* @param arg: contain the ip link information
* @retval None
*/
void ICACHE_FLASH_ATTR mqtt_tcpclient_recon_cb(void *arg, sint8 errType) {
struct espconn *pCon = (struct espconn *)arg;
MQTT_Client *client = (MQTT_Client *) pCon->reverse;
MQTT_INFO("TCP: Reconnect to %s:%d\r\n", client->host, client->port);
client->connState = TCP_RECONNECT_REQ;
system_os_post(MQTT_TASK_PRIO, 0, (os_param_t) client);
}
/**
* @brief MQTT publish function.
* @param client: MQTT_Client reference
* @param topic: string topic will publish to
* @param data: buffer data send point to
* @param data_length: length of data
* @param qos: qos
* @param retain: retain
* @retval TRUE if success queue
*/
BOOL ICACHE_FLASH_ATTR
MQTT_Publish(MQTT_Client * client, const char *topic, const char *data, int data_length, int qos, int retain) {
uint8_t dataBuffer[MQTT_BUF_SIZE];
uint16_t dataLen;
client->mqtt_state.outbound_message = mqtt_msg_publish(&client->mqtt_state.mqtt_connection,
topic, data, data_length,
qos, retain, &client->mqtt_state.pending_msg_id);
if (client->mqtt_state.outbound_message->length == 0) {
MQTT_INFO("MQTT: Queuing publish failed\r\n");
return FALSE;
}
MQTT_INFO("MQTT: queuing publish, length: %d, queue size(%d/%d)\r\n", client->mqtt_state.outbound_message->length,
client->msgQueue.rb.fill_cnt, client->msgQueue.rb.size);
while (QUEUE_Puts
(&client->msgQueue, client->mqtt_state.outbound_message->data,
client->mqtt_state.outbound_message->length) == -1) {
MQTT_INFO("MQTT: Queue full\r\n");
if (QUEUE_Gets(&client->msgQueue, dataBuffer, &dataLen, MQTT_BUF_SIZE) == -1) {
MQTT_INFO("MQTT: Serious buffer error\r\n");
return FALSE;
}
}
system_os_post(MQTT_TASK_PRIO, 0, (os_param_t) client);
return TRUE;
}
/**
* @brief MQTT subscibe function.
* @param client: MQTT_Client reference
* @param topic: string topic will subscribe
* @param qos: qos
* @retval TRUE if success queue
*/
BOOL ICACHE_FLASH_ATTR MQTT_Subscribe(MQTT_Client * client, char *topic, uint8_t qos) {
uint8_t dataBuffer[MQTT_BUF_SIZE];
uint16_t dataLen;
client->mqtt_state.outbound_message = mqtt_msg_subscribe(&client->mqtt_state.mqtt_connection,
topic, qos, &client->mqtt_state.pending_msg_id);
MQTT_INFO("MQTT: queue subscribe, topic\"%s\", id: %d\r\n", topic, client->mqtt_state.pending_msg_id);
while (QUEUE_Puts
(&client->msgQueue, client->mqtt_state.outbound_message->data,
client->mqtt_state.outbound_message->length) == -1) {
MQTT_INFO("MQTT: Queue full\r\n");
if (QUEUE_Gets(&client->msgQueue, dataBuffer, &dataLen, MQTT_BUF_SIZE) == -1) {
MQTT_INFO("MQTT: Serious buffer error\r\n");
return FALSE;
}
}
system_os_post(MQTT_TASK_PRIO, 0, (os_param_t) client);
return TRUE;
}
/**
* @brief MQTT un-subscibe function.
* @param client: MQTT_Client reference
* @param topic: String topic will un-subscribe
* @retval TRUE if success queue
*/
BOOL ICACHE_FLASH_ATTR MQTT_UnSubscribe(MQTT_Client * client, char *topic) {
uint8_t dataBuffer[MQTT_BUF_SIZE];
uint16_t dataLen;
client->mqtt_state.outbound_message = mqtt_msg_unsubscribe(&client->mqtt_state.mqtt_connection,
topic, &client->mqtt_state.pending_msg_id);
MQTT_INFO("MQTT: queue un-subscribe, topic\"%s\", id: %d\r\n", topic, client->mqtt_state.pending_msg_id);
while (QUEUE_Puts
(&client->msgQueue, client->mqtt_state.outbound_message->data,
client->mqtt_state.outbound_message->length) == -1) {
MQTT_INFO("MQTT: Queue full\r\n");
if (QUEUE_Gets(&client->msgQueue, dataBuffer, &dataLen, MQTT_BUF_SIZE) == -1) {
MQTT_INFO("MQTT: Serious buffer error\r\n");
return FALSE;
}
}
system_os_post(MQTT_TASK_PRIO, 0, (os_param_t) client);
return TRUE;
}
/**
* @brief MQTT ping function.
* @param client: MQTT_Client reference
* @retval TRUE if success queue
*/
BOOL ICACHE_FLASH_ATTR MQTT_Ping(MQTT_Client * client) {
uint8_t dataBuffer[MQTT_BUF_SIZE];
uint16_t dataLen;
client->mqtt_state.outbound_message = mqtt_msg_pingreq(&client->mqtt_state.mqtt_connection);
if (client->mqtt_state.outbound_message->length == 0) {
MQTT_INFO("MQTT: Queuing publish failed\r\n");
return FALSE;
}
MQTT_INFO("MQTT: queuing publish, length: %d, queue size(%d/%d)\r\n", client->mqtt_state.outbound_message->length,
client->msgQueue.rb.fill_cnt, client->msgQueue.rb.size);
while (QUEUE_Puts
(&client->msgQueue, client->mqtt_state.outbound_message->data,
client->mqtt_state.outbound_message->length) == -1) {
MQTT_INFO("MQTT: Queue full\r\n");
if (QUEUE_Gets(&client->msgQueue, dataBuffer, &dataLen, MQTT_BUF_SIZE) == -1) {
MQTT_INFO("MQTT: Serious buffer error\r\n");
return FALSE;
}
}
system_os_post(MQTT_TASK_PRIO, 0, (os_param_t) client);
return TRUE;
}
void ICACHE_FLASH_ATTR MQTT_Task(os_event_t * e) {
MQTT_Client *client = (MQTT_Client *) e->par;
uint8_t dataBuffer[MQTT_BUF_SIZE];
uint16_t dataLen;
if (e->par == 0)
return;
MQTT_INFO("MQTT: Client task activated - state %d\r\n", client->connState);
switch (client->connState) {
case TCP_RECONNECT_REQ:
break;
case TCP_RECONNECT:
mqtt_tcpclient_delete(client);
MQTT_Connect(client);
MQTT_INFO("TCP: Reconnect to: %s:%d\r\n", client->host, client->port);
client->connState = TCP_CONNECTING;
break;
case MQTT_DELETING:
case TCP_DISCONNECTING:
case TCP_RECONNECT_DISCONNECTING:
if (client->security) {
#ifdef MQTT_SSL_ENABLE
espconn_secure_disconnect(client->pCon);
#else
MQTT_INFO("TCP: Do not support SSL\r\n");
#endif
} else {
espconn_disconnect(client->pCon);
}
break;
case TCP_DISCONNECTED:
MQTT_INFO("MQTT: Disconnected\r\n");
mqtt_tcpclient_delete(client);
break;
case MQTT_DELETED:
MQTT_INFO("MQTT: Deleted client\r\n");
mqtt_client_delete(client);
break;
case MQTT_KEEPALIVE_SEND:
mqtt_send_keepalive(client);
break;
case MQTT_DATA:
if (QUEUE_IsEmpty(&client->msgQueue) || client->sendTimeout != 0) {
break;
}
if (QUEUE_Gets(&client->msgQueue, dataBuffer, &dataLen, MQTT_BUF_SIZE) == 0) {
client->mqtt_state.pending_msg_type = mqtt_get_type(dataBuffer);
client->mqtt_state.pending_msg_id = mqtt_get_id(dataBuffer, dataLen);
client->sendTimeout = MQTT_SEND_TIMOUT;
MQTT_INFO("MQTT: Sending, type: %d, id: %04X\r\n", client->mqtt_state.pending_msg_type,
client->mqtt_state.pending_msg_id);
client->keepAliveTick = 0;
if (client->security) {
#ifdef MQTT_SSL_ENABLE
espconn_secure_send(client->pCon, dataBuffer, dataLen);
#else
MQTT_INFO("TCP: Do not support SSL\r\n");
#endif
} else {
espconn_send(client->pCon, dataBuffer, dataLen);
}
client->mqtt_state.outbound_message = NULL;
break;
}
break;
}
}
/**
* @brief MQTT initialization connection function
* @param client: MQTT_Client reference
* @param host: Domain or IP string
* @param port: Port to connect
* @param security: 1 for ssl, 0 for none
* @retval None
*/
void ICACHE_FLASH_ATTR MQTT_InitConnection(MQTT_Client * mqttClient, uint8_t * host, uint32_t port, uint8_t security) {
uint32_t temp;
MQTT_INFO("MQTT:InitConnection\r\n");
os_memset(mqttClient, 0, sizeof(MQTT_Client));
temp = os_strlen(host);
mqttClient->host = (uint8_t *) os_zalloc(temp + 1);
os_strcpy(mqttClient->host, host);
mqttClient->host[temp] = 0;
mqttClient->port = port;
mqttClient->security = security;
}
/**
* @brief MQTT initialization mqtt client function
* @param client: MQTT_Client reference
* @param clientid: MQTT client id
* @param client_user:MQTT client user
* @param client_pass:MQTT client password
* @param client_pass:MQTT keep alive timer, in second
* @retval None
*/
BOOL ICACHE_FLASH_ATTR
MQTT_InitClient(MQTT_Client * mqttClient, uint8_t * client_id, uint8_t * client_user, uint8_t * client_pass,
uint32_t keepAliveTime, uint8_t cleanSession) {
uint32_t temp;
MQTT_INFO("MQTT:InitClient\r\n");
os_memset(&mqttClient->connect_info, 0, sizeof(mqtt_connect_info_t));
if (!client_id) {
/* Should be allowed by broker, but clean session flag must be set. */
#ifdef PROTOCOL_NAMEv311
if (cleanSession) {
mqttClient->connect_info.client_id = zero_len_id;
} else {
MQTT_INFO("cleanSession must be set to use 0 length client_id\r\n");
return false;
}
/* Not supported. Return. */
#else
MQTT_INFO("Client ID required for MQTT < 3.1.1!\r\n");
return false;
#endif
}
/* If connect_info's client_id is still NULL and we get here, we can *
* assume the passed client_id is non-NULL. */
if (!(mqttClient->connect_info.client_id)) {
temp = os_strlen(client_id);
mqttClient->connect_info.client_id = (uint8_t *) os_zalloc(temp + 1);
os_strcpy(mqttClient->connect_info.client_id, client_id);
mqttClient->connect_info.client_id[temp] = 0;
}
if (client_user) {
temp = os_strlen(client_user);
mqttClient->connect_info.username = (uint8_t *) os_zalloc(temp + 1);
os_strcpy(mqttClient->connect_info.username, client_user);
mqttClient->connect_info.username[temp] = 0;
}
if (client_pass) {
temp = os_strlen(client_pass);
mqttClient->connect_info.password = (uint8_t *) os_zalloc(temp + 1);
os_strcpy(mqttClient->connect_info.password, client_pass);
mqttClient->connect_info.password[temp] = 0;
}
mqttClient->connect_info.keepalive = keepAliveTime;
mqttClient->connect_info.clean_session = cleanSession;
mqttClient->mqtt_state.in_buffer = (uint8_t *) os_zalloc(MQTT_BUF_SIZE);
mqttClient->mqtt_state.in_buffer_length = MQTT_BUF_SIZE;
mqttClient->mqtt_state.out_buffer = (uint8_t *) os_zalloc(MQTT_BUF_SIZE);
mqttClient->mqtt_state.out_buffer_length = MQTT_BUF_SIZE;
mqttClient->mqtt_state.connect_info = &mqttClient->connect_info;
mqtt_msg_init(&mqttClient->mqtt_state.mqtt_connection, mqttClient->mqtt_state.out_buffer,
mqttClient->mqtt_state.out_buffer_length);
QUEUE_Init(&mqttClient->msgQueue, QUEUE_BUFFER_SIZE);
system_os_task(MQTT_Task, MQTT_TASK_PRIO, mqtt_procTaskQueue, MQTT_TASK_QUEUE_SIZE);
system_os_post(MQTT_TASK_PRIO, 0, (os_param_t) mqttClient);
return true;
}
void ICACHE_FLASH_ATTR
MQTT_InitLWT(MQTT_Client * mqttClient, uint8_t * will_topic, uint8_t * will_msg, uint8_t will_qos, uint8_t will_retain)
{
uint32_t temp;
temp = os_strlen(will_topic);
mqttClient->connect_info.will_topic = (uint8_t *) os_zalloc(temp + 1);
os_strcpy(mqttClient->connect_info.will_topic, will_topic);
mqttClient->connect_info.will_topic[temp] = 0;
temp = os_strlen(will_msg);
mqttClient->connect_info.will_data = (uint8_t *) os_zalloc(temp + 1);
os_strcpy(mqttClient->connect_info.will_data, will_msg);
mqttClient->connect_info.will_data[temp] = 0;
mqttClient->connect_info.will_qos = will_qos;
mqttClient->connect_info.will_retain = will_retain;
}
/**
* @brief Begin connect to MQTT broker
* @param client: MQTT_Client reference
* @retval None
*/
void ICACHE_FLASH_ATTR MQTT_Connect(MQTT_Client * mqttClient) {
if (mqttClient->pCon) {
// Clean up the old connection forcefully - using MQTT_Disconnect
// does not actually release the old connection until the
// disconnection callback is invoked.
mqtt_tcpclient_delete(mqttClient);
}
mqttClient->pCon = (struct espconn *)os_zalloc(sizeof(struct espconn));
mqttClient->pCon->type = ESPCONN_TCP;
mqttClient->pCon->state = ESPCONN_NONE;
mqttClient->pCon->proto.tcp = (esp_tcp *) os_zalloc(sizeof(esp_tcp));
mqttClient->pCon->proto.tcp->local_port = espconn_port();
mqttClient->pCon->proto.tcp->remote_port = mqttClient->port;
mqttClient->pCon->reverse = mqttClient;
espconn_regist_connectcb(mqttClient->pCon, mqtt_tcpclient_connect_cb);
espconn_regist_reconcb(mqttClient->pCon, mqtt_tcpclient_recon_cb);
mqttClient->keepAliveTick = 0;
mqttClient->reconnectTick = 0;
os_timer_disarm(&mqttClient->mqttTimer);
os_timer_setfn(&mqttClient->mqttTimer, (os_timer_func_t *) mqtt_timer, mqttClient);
os_timer_arm(&mqttClient->mqttTimer, 1000, 1);
if (UTILS_StrToIP(mqttClient->host, &mqttClient->pCon->proto.tcp->remote_ip)) {
MQTT_INFO("TCP: Connect to ip %s:%d\r\n", mqttClient->host, mqttClient->port);
if (mqttClient->security) {
#ifdef MQTT_SSL_ENABLE
espconn_secure_set_size(ESPCONN_CLIENT, MQTT_SSL_SIZE);
espconn_secure_connect(mqttClient->pCon);
#else
MQTT_INFO("TCP: Do not support SSL\r\n");
#endif
} else {
espconn_connect(mqttClient->pCon);
}
} else {
MQTT_INFO("TCP: Connect to domain %s:%d\r\n", mqttClient->host, mqttClient->port);
espconn_gethostbyname(mqttClient->pCon, mqttClient->host, &mqttClient->ip, mqtt_dns_found);
}
mqttClient->connState = TCP_CONNECTING;
}
void ICACHE_FLASH_ATTR MQTT_Disconnect(MQTT_Client * mqttClient) {
mqttClient->connState = TCP_DISCONNECTING;
system_os_post(MQTT_TASK_PRIO, 0, (os_param_t) mqttClient);
os_timer_disarm(&mqttClient->mqttTimer);
}
void ICACHE_FLASH_ATTR MQTT_DeleteClient(MQTT_Client * mqttClient) {
if (NULL == mqttClient)
return;
mqttClient->connState = MQTT_DELETED;
// if(TCP_DISCONNECTED == mqttClient->connState) {
// mqttClient->connState = MQTT_DELETED;
// } else if(MQTT_DELETED != mqttClient->connState) {
// mqttClient->connState = MQTT_DELETING;
// }
system_os_post(MQTT_TASK_PRIO, 0, (os_param_t) mqttClient);
os_timer_disarm(&mqttClient->mqttTimer);
}
void ICACHE_FLASH_ATTR MQTT_OnConnected(MQTT_Client * mqttClient, MqttCallback connectedCb) {
mqttClient->connectedCb = connectedCb;
}
void ICACHE_FLASH_ATTR MQTT_OnDisconnected(MQTT_Client * mqttClient, MqttCallback disconnectedCb) {
mqttClient->disconnectedCb = disconnectedCb;
}
void ICACHE_FLASH_ATTR MQTT_OnData(MQTT_Client * mqttClient, MqttDataCallback dataCb) {
mqttClient->dataCb = dataCb;
}
void ICACHE_FLASH_ATTR MQTT_OnPublished(MQTT_Client * mqttClient, MqttCallback publishedCb) {
mqttClient->publishedCb = publishedCb;
}
void ICACHE_FLASH_ATTR MQTT_OnTimeout(MQTT_Client * mqttClient, MqttCallback timeoutCb) {
mqttClient->timeoutCb = timeoutCb;
}
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