mirror of
https://github.com/letscontrolit/ESPEasy.git
synced 2026-09-13 01:56:19 +00:00
726 lines
22 KiB
C++
726 lines
22 KiB
C++
/*
|
|
PubSubClient.cpp - A simple client for MQTT.
|
|
Nick O'Leary
|
|
http://knolleary.net
|
|
*/
|
|
|
|
#include "PubSubClient.h"
|
|
#include <Arduino.h>
|
|
|
|
#ifdef ESP32
|
|
#include <WiFiClient.h>
|
|
#endif
|
|
|
|
PubSubClient::PubSubClient() {
|
|
this->_state = MQTT_DISCONNECTED;
|
|
this->_client = NULL;
|
|
this->stream = NULL;
|
|
setCallback(NULL);
|
|
}
|
|
|
|
PubSubClient::PubSubClient(Client& client) {
|
|
this->_state = MQTT_DISCONNECTED;
|
|
setClient(client);
|
|
this->stream = NULL;
|
|
}
|
|
|
|
PubSubClient::PubSubClient(IPAddress addr, uint16_t port, Client& client) {
|
|
this->_state = MQTT_DISCONNECTED;
|
|
setServer(addr, port);
|
|
setClient(client);
|
|
this->stream = NULL;
|
|
}
|
|
PubSubClient::PubSubClient(IPAddress addr, uint16_t port, Client& client, Stream& stream) {
|
|
this->_state = MQTT_DISCONNECTED;
|
|
setServer(addr,port);
|
|
setClient(client);
|
|
setStream(stream);
|
|
}
|
|
PubSubClient::PubSubClient(IPAddress addr, uint16_t port, MQTT_CALLBACK_SIGNATURE, Client& client) {
|
|
this->_state = MQTT_DISCONNECTED;
|
|
setServer(addr, port);
|
|
setCallback(callback);
|
|
setClient(client);
|
|
this->stream = NULL;
|
|
}
|
|
PubSubClient::PubSubClient(IPAddress addr, uint16_t port, MQTT_CALLBACK_SIGNATURE, Client& client, Stream& stream) {
|
|
this->_state = MQTT_DISCONNECTED;
|
|
setServer(addr,port);
|
|
setCallback(callback);
|
|
setClient(client);
|
|
setStream(stream);
|
|
}
|
|
|
|
PubSubClient::PubSubClient(uint8_t *ip, uint16_t port, Client& client) {
|
|
this->_state = MQTT_DISCONNECTED;
|
|
setServer(ip, port);
|
|
setClient(client);
|
|
this->stream = NULL;
|
|
}
|
|
PubSubClient::PubSubClient(uint8_t *ip, uint16_t port, Client& client, Stream& stream) {
|
|
this->_state = MQTT_DISCONNECTED;
|
|
setServer(ip,port);
|
|
setClient(client);
|
|
setStream(stream);
|
|
}
|
|
PubSubClient::PubSubClient(uint8_t *ip, uint16_t port, MQTT_CALLBACK_SIGNATURE, Client& client) {
|
|
this->_state = MQTT_DISCONNECTED;
|
|
setServer(ip, port);
|
|
setCallback(callback);
|
|
setClient(client);
|
|
this->stream = NULL;
|
|
}
|
|
PubSubClient::PubSubClient(uint8_t *ip, uint16_t port, MQTT_CALLBACK_SIGNATURE, Client& client, Stream& stream) {
|
|
this->_state = MQTT_DISCONNECTED;
|
|
setServer(ip,port);
|
|
setCallback(callback);
|
|
setClient(client);
|
|
setStream(stream);
|
|
}
|
|
|
|
PubSubClient::PubSubClient(const char* domain, uint16_t port, Client& client) {
|
|
this->_state = MQTT_DISCONNECTED;
|
|
setServer(domain,port);
|
|
setClient(client);
|
|
this->stream = NULL;
|
|
}
|
|
PubSubClient::PubSubClient(const char* domain, uint16_t port, Client& client, Stream& stream) {
|
|
this->_state = MQTT_DISCONNECTED;
|
|
setServer(domain,port);
|
|
setClient(client);
|
|
setStream(stream);
|
|
}
|
|
PubSubClient::PubSubClient(const char* domain, uint16_t port, MQTT_CALLBACK_SIGNATURE, Client& client) {
|
|
this->_state = MQTT_DISCONNECTED;
|
|
setServer(domain,port);
|
|
setCallback(callback);
|
|
setClient(client);
|
|
this->stream = NULL;
|
|
}
|
|
PubSubClient::PubSubClient(const char* domain, uint16_t port, MQTT_CALLBACK_SIGNATURE, Client& client, Stream& stream) {
|
|
this->_state = MQTT_DISCONNECTED;
|
|
setServer(domain,port);
|
|
setCallback(callback);
|
|
setClient(client);
|
|
setStream(stream);
|
|
}
|
|
|
|
boolean PubSubClient::connect(const char *id) {
|
|
return connect(id,NULL,NULL,0,0,0,0,1);
|
|
}
|
|
|
|
boolean PubSubClient::connect(const char *id, const char *user, const char *pass) {
|
|
return connect(id,user,pass,0,0,0,0,1);
|
|
}
|
|
|
|
boolean PubSubClient::connect(const char *id, const char* willTopic, uint8_t willQos, boolean willRetain, const char* willMessage) {
|
|
return connect(id,NULL,NULL,willTopic,willQos,willRetain,willMessage,1);
|
|
}
|
|
|
|
boolean PubSubClient::connect(const char *id, const char *user, const char *pass, const char* willTopic, uint8_t willQos, boolean willRetain, const char* willMessage) {
|
|
return connect(id,user,pass,willTopic,willQos,willRetain,willMessage,1);
|
|
}
|
|
|
|
boolean PubSubClient::connect(const char *id, const char *user, const char *pass, const char* willTopic, uint8_t willQos, boolean willRetain, const char* willMessage, boolean cleanSession) {
|
|
if (!connected()) {
|
|
int result = 0;
|
|
|
|
if (_client == nullptr) {
|
|
return false;
|
|
}
|
|
if (_client->connected()) {
|
|
result = 1;
|
|
} else {
|
|
if (domain.length() != 0) {
|
|
#ifdef ESP32
|
|
WiFiClient* wfc = (WiFiClient*)_client;
|
|
result = wfc->connect(this->domain.c_str(), this->port, ESP32_CONNECTION_TIMEOUT);
|
|
#else
|
|
result = _client->connect(this->domain.c_str(), this->port);
|
|
#endif
|
|
} else {
|
|
#ifdef ESP32
|
|
WiFiClient* wfc = (WiFiClient*)_client;
|
|
result = wfc->connect(this->ip, this->port, ESP32_CONNECTION_TIMEOUT);
|
|
#else
|
|
result = _client->connect(this->ip, this->port);
|
|
#endif
|
|
}
|
|
}
|
|
if (result == 1) {
|
|
nextMsgId = 1;
|
|
// Leave room in the buffer for header and variable length field
|
|
uint16_t length = MQTT_MAX_HEADER_SIZE;
|
|
unsigned int j;
|
|
|
|
#if MQTT_VERSION == MQTT_VERSION_3_1
|
|
uint8_t d[9] = {0x00,0x06,'M','Q','I','s','d','p', MQTT_VERSION};
|
|
#define MQTT_HEADER_VERSION_LENGTH 9
|
|
#elif MQTT_VERSION == MQTT_VERSION_3_1_1
|
|
uint8_t d[7] = {0x00,0x04,'M','Q','T','T',MQTT_VERSION};
|
|
#define MQTT_HEADER_VERSION_LENGTH 7
|
|
#endif
|
|
for (j = 0;j<MQTT_HEADER_VERSION_LENGTH;j++) {
|
|
buffer[length++] = d[j];
|
|
}
|
|
|
|
uint8_t v;
|
|
if (willTopic) {
|
|
v = 0x04|(willQos<<3)|(willRetain<<5);
|
|
} else {
|
|
v = 0x00;
|
|
}
|
|
if (cleanSession) {
|
|
v = v|0x02;
|
|
}
|
|
|
|
if(user != NULL) {
|
|
v = v|0x80;
|
|
|
|
if(pass != NULL) {
|
|
v = v|(0x80>>1);
|
|
}
|
|
}
|
|
|
|
buffer[length++] = v;
|
|
|
|
buffer[length++] = ((MQTT_KEEPALIVE) >> 8);
|
|
buffer[length++] = ((MQTT_KEEPALIVE) & 0xFF);
|
|
|
|
CHECK_STRING_LENGTH(length,id)
|
|
length = writeString(id,buffer,length);
|
|
if (willTopic) {
|
|
CHECK_STRING_LENGTH(length,willTopic)
|
|
length = writeString(willTopic,buffer,length);
|
|
CHECK_STRING_LENGTH(length,willMessage)
|
|
length = writeString(willMessage,buffer,length);
|
|
}
|
|
|
|
if(user != NULL) {
|
|
CHECK_STRING_LENGTH(length,user)
|
|
length = writeString(user,buffer,length);
|
|
if(pass != NULL) {
|
|
CHECK_STRING_LENGTH(length,pass)
|
|
length = writeString(pass,buffer,length);
|
|
}
|
|
}
|
|
|
|
write(MQTTCONNECT,buffer,length-MQTT_MAX_HEADER_SIZE);
|
|
|
|
lastInActivity = lastOutActivity = millis();
|
|
pingOutstanding = false; // See: https://github.com/knolleary/pubsubclient/pull/802
|
|
|
|
while (!_client->available()) {
|
|
delay(0); // Prevent watchdog crashes
|
|
unsigned long t = millis();
|
|
if (t-lastInActivity >= ((int32_t) MQTT_SOCKET_TIMEOUT*1000UL)) {
|
|
_state = MQTT_CONNECTION_TIMEOUT;
|
|
_client->stop();
|
|
return false;
|
|
}
|
|
}
|
|
uint8_t llen;
|
|
uint16_t len = readPacket(&llen);
|
|
|
|
if (len == 4) {
|
|
if (buffer[3] == 0) {
|
|
lastInActivity = millis();
|
|
pingOutstanding = false;
|
|
_state = MQTT_CONNECTED;
|
|
return true;
|
|
} else {
|
|
_state = buffer[3];
|
|
}
|
|
}
|
|
_client->stop();
|
|
} else {
|
|
_state = MQTT_CONNECT_FAILED;
|
|
}
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// reads a byte into result
|
|
boolean PubSubClient::readByte(uint8_t * result) {
|
|
if (_client == nullptr) {
|
|
return false;
|
|
}
|
|
uint32_t previousMillis = millis();
|
|
while(!_client->available()) {
|
|
delay(1); // Prevent watchdog crashes
|
|
uint32_t currentMillis = millis();
|
|
if(currentMillis - previousMillis >= ((int32_t) MQTT_SOCKET_TIMEOUT * 1000)){
|
|
return false;
|
|
}
|
|
}
|
|
*result = _client->read();
|
|
return true;
|
|
}
|
|
|
|
// reads a byte into result[*index] and increments index
|
|
boolean PubSubClient::readByte(uint8_t * result, uint16_t * index){
|
|
uint16_t current_index = *index;
|
|
uint8_t * write_address = &(result[current_index]);
|
|
if(readByte(write_address)){
|
|
*index = current_index + 1;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
uint16_t PubSubClient::readPacket(uint8_t* lengthLength) {
|
|
uint16_t len = 0;
|
|
if(!readByte(buffer, &len)) return 0;
|
|
bool isPublish = (buffer[0]&0xF0) == MQTTPUBLISH;
|
|
uint32_t multiplier = 1;
|
|
uint16_t length = 0;
|
|
uint8_t digit = 0;
|
|
uint16_t skip = 0;
|
|
uint8_t start = 0;
|
|
|
|
do {
|
|
if (len == 5) {
|
|
// Invalid remaining length encoding - kill the connection
|
|
_state = MQTT_DISCONNECTED;
|
|
_client->stop();
|
|
return 0;
|
|
}
|
|
if(!readByte(&digit)) return 0;
|
|
buffer[len++] = digit;
|
|
length += (digit & 127) * multiplier;
|
|
multiplier *= 128;
|
|
} while ((digit & 128) != 0 && len < (MQTT_MAX_PACKET_SIZE -2));
|
|
*lengthLength = len-1;
|
|
|
|
if (isPublish) {
|
|
// Read in topic length to calculate bytes to skip over for Stream writing
|
|
if(!readByte(buffer, &len)) return 0;
|
|
if(!readByte(buffer, &len)) return 0;
|
|
skip = (buffer[*lengthLength+1]<<8)+buffer[*lengthLength+2];
|
|
start = 2;
|
|
if (buffer[0]&MQTTQOS1) {
|
|
// skip message id
|
|
skip += 2;
|
|
}
|
|
}
|
|
|
|
for (uint16_t i = start;i<length;i++) {
|
|
if(!readByte(&digit)) return 0;
|
|
if (this->stream) {
|
|
if (isPublish && len-*lengthLength-2>skip) {
|
|
this->stream->write(digit);
|
|
}
|
|
}
|
|
if (len < MQTT_MAX_PACKET_SIZE) {
|
|
buffer[len] = digit;
|
|
}
|
|
len++;
|
|
}
|
|
|
|
if (!this->stream && len > MQTT_MAX_PACKET_SIZE) {
|
|
len = 0; // This will cause the packet to be ignored.
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
bool PubSubClient::loop_read() {
|
|
if (_client == nullptr) {
|
|
return false;
|
|
}
|
|
if (!_client->available()) {
|
|
return false;
|
|
}
|
|
uint8_t llen;
|
|
uint16_t len = readPacket(&llen);
|
|
if (len == 0) {
|
|
return false;
|
|
}
|
|
unsigned long t = millis();
|
|
lastInActivity = t;
|
|
uint8_t type = buffer[0]&0xF0;
|
|
|
|
switch(type) {
|
|
case MQTTPUBLISH:
|
|
{
|
|
if (callback) {
|
|
const bool msgId_present = (buffer[0]&0x06) == MQTTQOS1;
|
|
const uint16_t tl_offset = llen+1;
|
|
const uint16_t tl = (buffer[tl_offset]<<8)+buffer[tl_offset+1]; /* topic length in bytes */
|
|
const uint16_t topic_offset = tl_offset+2;
|
|
const uint16_t msgId_offset = topic_offset+tl;
|
|
const uint16_t payload_offset = msgId_present ? msgId_offset+2 : msgId_offset;
|
|
if (payload_offset >= MQTT_MAX_PACKET_SIZE) return false;
|
|
if (len < payload_offset) return false;
|
|
// Need to move the topic 1 byte to insert a '\0' at the end of the topic.
|
|
memmove(buffer+topic_offset-1,buffer+topic_offset,tl); /* move topic inside buffer 1 byte to front */
|
|
buffer[topic_offset-1+tl] = 0; /* end the topic as a 'C' string with \x00 */
|
|
char *topic = (char*) buffer+topic_offset-1;
|
|
uint8_t *payload;
|
|
// msgId only present for QOS>0
|
|
if (msgId_present) {
|
|
const uint16_t msgId = (buffer[msgId_offset]<<8)+buffer[msgId_offset+1];
|
|
payload = buffer+payload_offset;
|
|
callback(topic,payload,len-payload_offset);
|
|
if (_client->connected()) {
|
|
buffer[0] = MQTTPUBACK;
|
|
buffer[1] = 2;
|
|
buffer[2] = (msgId >> 8);
|
|
buffer[3] = (msgId & 0xFF);
|
|
if (_client->write(buffer,4) != 0) {
|
|
lastOutActivity = t;
|
|
}
|
|
}
|
|
} else {
|
|
// No msgId
|
|
payload = buffer+payload_offset;
|
|
callback(topic,payload,len-payload_offset);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case MQTTPINGREQ:
|
|
{
|
|
if (_client->connected()) {
|
|
buffer[0] = MQTTPINGRESP;
|
|
buffer[1] = 0;
|
|
_client->write(buffer,2);
|
|
}
|
|
break;
|
|
}
|
|
case MQTTPINGRESP:
|
|
{
|
|
pingOutstanding = false;
|
|
break;
|
|
}
|
|
default:
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
boolean PubSubClient::loop() {
|
|
loop_read();
|
|
if (connected()) {
|
|
unsigned long t = millis();
|
|
if ((t - lastInActivity > MQTT_KEEPALIVE*1000UL) || (t - lastOutActivity > MQTT_KEEPALIVE*1000UL)) {
|
|
if (pingOutstanding) {
|
|
this->_state = MQTT_CONNECTION_TIMEOUT;
|
|
_client->stop();
|
|
return false;
|
|
} else {
|
|
buffer[0] = MQTTPINGREQ;
|
|
buffer[1] = 0;
|
|
if (_client->write(buffer,2) != 0) {
|
|
lastOutActivity = t;
|
|
lastInActivity = t;
|
|
}
|
|
pingOutstanding = true;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
boolean PubSubClient::publish(const char* topic, const char* payload) {
|
|
size_t plength = (payload != nullptr) ? strlen(payload) : 0;
|
|
return publish(topic,(const uint8_t*)payload,plength,false);
|
|
}
|
|
|
|
boolean PubSubClient::publish(const char* topic, const char* payload, boolean retained) {
|
|
size_t plength = (payload != nullptr) ? strlen(payload) : 0;
|
|
return publish(topic,(const uint8_t*)payload,plength,retained);
|
|
}
|
|
|
|
boolean PubSubClient::publish(const char* topic, const uint8_t* payload, unsigned int plength) {
|
|
return publish(topic, payload, plength, false);
|
|
}
|
|
|
|
boolean PubSubClient::publish(const char* topic, const uint8_t* payload, unsigned int plength, boolean retained) {
|
|
if (!beginPublish(topic, plength, retained)) {
|
|
return false;
|
|
}
|
|
for (unsigned int i=0;i<plength;i++) {
|
|
write(payload[i]);
|
|
}
|
|
endPublish();
|
|
return true;
|
|
}
|
|
|
|
boolean PubSubClient::publish_P(const char* topic, const char* payload, boolean retained) {
|
|
size_t plength = (payload != nullptr) ? strlen_P(payload) : 0;
|
|
return publish_P(topic, (const uint8_t*)payload, plength, retained);
|
|
}
|
|
|
|
boolean PubSubClient::publish_P(const char* topic, const uint8_t* payload, unsigned int plength, boolean retained) {
|
|
if (!beginPublish(topic, plength, retained)) {
|
|
return false;
|
|
}
|
|
for (unsigned int i=0;i<plength;i++) {
|
|
write(pgm_read_byte_near(payload + i));
|
|
}
|
|
endPublish();
|
|
return true;
|
|
}
|
|
|
|
boolean PubSubClient::beginPublish(const char* topic, unsigned int plength, boolean retained) {
|
|
_bufferWritePos = 0;
|
|
if (connected()) {
|
|
// Send the header and variable length field
|
|
uint16_t length = MQTT_MAX_HEADER_SIZE;
|
|
length = writeString(topic,buffer,length);
|
|
uint8_t header = MQTTPUBLISH;
|
|
if (retained) {
|
|
header |= 1;
|
|
}
|
|
size_t hlen = buildHeader(header, buffer, plength+length-MQTT_MAX_HEADER_SIZE);
|
|
uint16_t rc = _client->write(buffer+(MQTT_MAX_HEADER_SIZE-hlen),length-(MQTT_MAX_HEADER_SIZE-hlen));
|
|
if (rc > 0) {
|
|
lastOutActivity = millis();
|
|
}
|
|
return (rc == (length-(MQTT_MAX_HEADER_SIZE-hlen)));
|
|
}
|
|
return false;
|
|
}
|
|
|
|
int PubSubClient::endPublish() {
|
|
flushBuffer();
|
|
return 1;
|
|
}
|
|
|
|
size_t PubSubClient::write(uint8_t data) {
|
|
if (_client == nullptr) {
|
|
lastOutActivity = millis();
|
|
return 0;
|
|
}
|
|
size_t rc = appendBuffer(data);
|
|
if (rc != 0) {
|
|
lastOutActivity = millis();
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
size_t PubSubClient::write(const uint8_t *data, size_t size) {
|
|
if (_client == nullptr) {
|
|
lastOutActivity = millis();
|
|
return 0;
|
|
}
|
|
size_t rc = appendBuffer(data,size);
|
|
if (rc != 0) {
|
|
lastOutActivity = millis();
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
size_t PubSubClient::write(const String& message) {
|
|
return write(reinterpret_cast<const uint8_t *>(message.c_str()), message.length());
|
|
}
|
|
|
|
|
|
size_t PubSubClient::buildHeader(uint8_t header, uint8_t* buf, uint32_t length) {
|
|
uint8_t lenBuf[4];
|
|
uint8_t llen = 0;
|
|
uint8_t digit;
|
|
uint8_t pos = 0;
|
|
uint32_t len = length;
|
|
do {
|
|
digit = len % 128;
|
|
len = len / 128;
|
|
if (len > 0) {
|
|
digit |= 0x80;
|
|
}
|
|
lenBuf[pos++] = digit;
|
|
llen++;
|
|
} while(len>0 && pos < 4);
|
|
|
|
buf[4-llen] = header;
|
|
for (int i=0;i<llen;i++) {
|
|
buf[MQTT_MAX_HEADER_SIZE-llen+i] = lenBuf[i];
|
|
}
|
|
return llen+1; // Full header size is variable length bit plus the 1-byte fixed header
|
|
}
|
|
|
|
boolean PubSubClient::write(uint8_t header, uint8_t* buf, uint32_t length) {
|
|
uint16_t rc;
|
|
uint8_t hlen = buildHeader(header, buf, length);
|
|
|
|
#ifdef MQTT_MAX_TRANSFER_SIZE
|
|
uint8_t* writeBuf = buf+(MQTT_MAX_HEADER_SIZE-hlen);
|
|
uint16_t bytesRemaining = length+hlen; //Match the length type
|
|
uint8_t bytesToWrite;
|
|
boolean result = true;
|
|
while((bytesRemaining > 0) && result) {
|
|
delay(0); // Prevent watchdog crashes
|
|
bytesToWrite = (bytesRemaining > MQTT_MAX_TRANSFER_SIZE)?MQTT_MAX_TRANSFER_SIZE:bytesRemaining;
|
|
rc = _client->write(writeBuf,bytesToWrite);
|
|
result = (rc == bytesToWrite);
|
|
bytesRemaining -= rc;
|
|
writeBuf += rc;
|
|
}
|
|
return result;
|
|
#else
|
|
rc = _client->write(buf+(MQTT_MAX_HEADER_SIZE-hlen),length+hlen);
|
|
if (rc != 0) {
|
|
lastOutActivity = millis();
|
|
}
|
|
return (rc == hlen+length);
|
|
#endif
|
|
}
|
|
|
|
boolean PubSubClient::subscribe(const char* topic) {
|
|
return subscribe(topic, 0);
|
|
}
|
|
|
|
boolean PubSubClient::subscribe(const char* topic, uint8_t qos) {
|
|
if (qos > 1) {
|
|
return false;
|
|
}
|
|
if (MQTT_MAX_PACKET_SIZE < 9 + strlen(topic)) {
|
|
// Too long
|
|
return false;
|
|
}
|
|
if (connected()) {
|
|
// Leave room in the buffer for header and variable length field
|
|
uint16_t length = MQTT_MAX_HEADER_SIZE;
|
|
nextMsgId++;
|
|
if (nextMsgId == 0) {
|
|
nextMsgId = 1;
|
|
}
|
|
buffer[length++] = (nextMsgId >> 8);
|
|
buffer[length++] = (nextMsgId & 0xFF);
|
|
length = writeString((char*)topic, buffer,length);
|
|
buffer[length++] = qos;
|
|
return write(MQTTSUBSCRIBE|MQTTQOS1,buffer,length-MQTT_MAX_HEADER_SIZE);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
boolean PubSubClient::unsubscribe(const char* topic) {
|
|
if (MQTT_MAX_PACKET_SIZE < 9 + strlen(topic)) {
|
|
// Too long
|
|
return false;
|
|
}
|
|
if (connected()) {
|
|
uint16_t length = MQTT_MAX_HEADER_SIZE;
|
|
nextMsgId++;
|
|
if (nextMsgId == 0) {
|
|
nextMsgId = 1;
|
|
}
|
|
buffer[length++] = (nextMsgId >> 8);
|
|
buffer[length++] = (nextMsgId & 0xFF);
|
|
length = writeString(topic, buffer,length);
|
|
return write(MQTTUNSUBSCRIBE|MQTTQOS1,buffer,length-MQTT_MAX_HEADER_SIZE);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void PubSubClient::disconnect() {
|
|
buffer[0] = MQTTDISCONNECT;
|
|
buffer[1] = 0;
|
|
if (_client != nullptr) {
|
|
_client->write(buffer,2);
|
|
_client->flush();
|
|
_client->stop();
|
|
}
|
|
_state = MQTT_DISCONNECTED;
|
|
lastInActivity = lastOutActivity = millis();
|
|
}
|
|
|
|
uint16_t PubSubClient::writeString(const char* string, uint8_t* buf, uint16_t pos) {
|
|
const char* idp = string;
|
|
uint16_t i = 0;
|
|
pos += 2;
|
|
while (*idp && pos < (MQTT_MAX_PACKET_SIZE - 2)) {
|
|
buf[pos++] = *idp++;
|
|
i++;
|
|
}
|
|
buf[pos-i-2] = (i >> 8);
|
|
buf[pos-i-1] = (i & 0xFF);
|
|
return pos;
|
|
}
|
|
|
|
size_t PubSubClient::appendBuffer(uint8_t data) {
|
|
buffer[_bufferWritePos] = data;
|
|
++_bufferWritePos;
|
|
if (_bufferWritePos >= MQTT_MAX_PACKET_SIZE) {
|
|
if (flushBuffer() == 0) return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
size_t PubSubClient::appendBuffer(const uint8_t *data, size_t size) {
|
|
for (size_t i = 0; i < size; ++i) {
|
|
if (appendBuffer(data[i]) == 0) return i;
|
|
}
|
|
return size;
|
|
}
|
|
|
|
size_t PubSubClient::flushBuffer() {
|
|
size_t rc = 0;
|
|
if (_bufferWritePos > 0) {
|
|
if (connected()) {
|
|
rc = _client->write(buffer, _bufferWritePos);
|
|
if (rc != 0) {
|
|
lastOutActivity = millis();
|
|
}
|
|
}
|
|
_bufferWritePos = 0;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
boolean PubSubClient::connected() {
|
|
if (_client == NULL ) {
|
|
this->_state = MQTT_DISCONNECTED;
|
|
return false;
|
|
}
|
|
if (_client->connected() == 0) {
|
|
bool lastStateConnected = this->_state == MQTT_CONNECTED;
|
|
this->disconnect();
|
|
if (lastStateConnected) {
|
|
this->_state = MQTT_CONNECTION_LOST;
|
|
}
|
|
return false;
|
|
}
|
|
return this->_state == MQTT_CONNECTED;
|
|
}
|
|
|
|
PubSubClient& PubSubClient::setServer(uint8_t * ip, uint16_t port) {
|
|
IPAddress addr(ip[0],ip[1],ip[2],ip[3]);
|
|
return setServer(addr,port);
|
|
}
|
|
|
|
PubSubClient& PubSubClient::setServer(IPAddress ip, uint16_t port) {
|
|
this->ip = ip;
|
|
this->port = port;
|
|
this->domain = "";
|
|
return *this;
|
|
}
|
|
|
|
PubSubClient& PubSubClient::setServer(const char * domain, uint16_t port) {
|
|
this->domain = domain;
|
|
this->port = port;
|
|
return *this;
|
|
}
|
|
|
|
PubSubClient& PubSubClient::setCallback(MQTT_CALLBACK_SIGNATURE) {
|
|
this->callback = callback;
|
|
return *this;
|
|
}
|
|
|
|
PubSubClient& PubSubClient::setClient(Client& client){
|
|
this->_client = &client;
|
|
return *this;
|
|
}
|
|
|
|
PubSubClient& PubSubClient::setStream(Stream& stream){
|
|
this->stream = &stream;
|
|
return *this;
|
|
}
|
|
|
|
int PubSubClient::state() {
|
|
return this->_state;
|
|
}
|