Ilya Krylov
123
Diff: MQTTClient.cpp
- Revision:
- 2:ca17c5d846e7
- Parent:
- 1:87da395325fc
- Child:
- 3:5e31b4687aad
--- a/MQTTClient.cpp Mon Sep 15 12:48:55 2014 +0000
+++ b/MQTTClient.cpp Sun Nov 29 18:12:22 2015 +0000
@@ -2,22 +2,37 @@
MQTTClient.cpp - A simple client for MQTT.
Nicholas O'Leary
http://knolleary.net
-
+
Ported to mbed by Zoltan Hudak <hudakz@inbox.com>
*/
-
#include "MQTTClient.h"
#include <string.h>
#include <time.h>
-MQTTClient::MQTTClient()
-{
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+MQTTClient::MQTTClient(void) {
this->_client = NULL;
this->stream = NULL;
}
-MQTTClient::MQTTClient(IPAddress& ip, uint16_t port, void (*onMessage)(char*,uint8_t*,unsigned int), Client& client)
-{
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+MQTTClient::MQTTClient
+(
+ IPAddress& ip,
+ uint16_t port,
+ void (*onMessage) (char*, uint8_t*, unsigned int),
+ Client& client
+) {
this->_client = &client;
this->onMessage = onMessage;
this->ip = ip;
@@ -26,8 +41,13 @@
this->stream = NULL;
}
-MQTTClient::MQTTClient(char* domain, uint16_t port, void (*onMessage)(char*,uint8_t*,unsigned int), Client& client)
-{
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+MQTTClient::MQTTClient(char* domain, uint16_t port, void (*onMessage) (char*, uint8_t*, unsigned int), Client& client) {
this->_client = &client;
this->onMessage = onMessage;
this->domain = domain;
@@ -35,8 +55,20 @@
this->stream = NULL;
}
-MQTTClient::MQTTClient(IPAddress& ip, uint16_t port, void (*onMessage)(char*,uint8_t*,unsigned int), Client& client, Stream& stream)
-{
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+MQTTClient::MQTTClient
+(
+ IPAddress& ip,
+ uint16_t port,
+ void (*onMessage) (char*, uint8_t*, unsigned int),
+ Client& client,
+ Stream& stream
+) {
this->_client = &client;
this->onMessage = onMessage;
this->ip = ip;
@@ -45,8 +77,20 @@
this->stream = &stream;
}
-MQTTClient::MQTTClient(char* domain, uint16_t port, void (*onMessage)(char*,uint8_t*,unsigned int), Client& client, Stream& stream)
-{
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+MQTTClient::MQTTClient
+(
+ char* domain,
+ uint16_t port,
+ void (*onMessage) (char*, uint8_t*, unsigned int),
+ Client& client,
+ Stream& stream
+) {
this->_client = &client;
this->onMessage = onMessage;
this->domain = domain;
@@ -54,54 +98,87 @@
this->stream = &stream;
}
-bool MQTTClient::connect(char *id)
-{
- return connect(id,NULL,NULL,0,0,0,0);
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+bool MQTTClient::connect(char* id) {
+ return connect(id, NULL, NULL, 0, 0, 0, 0);
}
-bool MQTTClient::connect(char *id, char *user, char *pass)
-{
- return connect(id,user,pass,0,0,0,0);
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+bool MQTTClient::connect(char* id, char* user, char* pass) {
+ return connect(id, user, pass, 0, 0, 0, 0);
}
-bool MQTTClient::connect(char *id, char* willTopic, uint8_t willQos, uint8_t willRetain, char* willMessage)
-{
- return connect(id,NULL,NULL,willTopic,willQos,willRetain,willMessage);
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+bool MQTTClient::connect(char* id, char* willTopic, uint8_t willQos, uint8_t willRetain, char* willMessage) {
+ return connect(id, NULL, NULL, willTopic, willQos, willRetain, willMessage);
}
-bool MQTTClient::connect(char *id, char *user, char *pass, char* willTopic, uint8_t willQos, uint8_t willRetain, char* willMessage)
-{
- if (!connected()) {
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+bool MQTTClient::connect
+(
+ char* id,
+ char* user,
+ char* pass,
+ char* willTopic,
+ uint8_t willQos,
+ uint8_t willRetain,
+ char* willMessage
+) {
+ if(!connected()) {
int result = 0;
- if (domain != NULL) {
+ if(domain != NULL) {
result = _client->connect(this->domain, this->port);
- } else {
+ }
+ else {
result = _client->connect(this->ip, this->port);
}
- if (result) {
+ if(result) {
nextMsgId = 1;
- uint8_t d[9] = {0x00,0x06,'M','Q','I','s','d','p',MQTTPROTOCOLVERSION};
+
+ uint8_t d[9] = { 0x00, 0x06, 'M', 'Q', 'I', 's', 'd', 'p', MQTTPROTOCOLVERSION };
+
// Leave room in the buffer for header and variable length field
- uint16_t length = 5;
- unsigned int j;
- for (j = 0; j<9; j++) {
+ uint16_t length = 5;
+ unsigned int j;
+ for(j = 0; j < 9; j++) {
buffer[length++] = d[j];
}
uint8_t v;
- if (willTopic) {
- v = 0x06|(willQos<<3)|(willRetain<<5);
- } else {
+ if(willTopic) {
+ v = 0x06 | (willQos << 3) | (willRetain << 5);
+ }
+ else {
v = 0x02;
}
if(user != NULL) {
- v = v|0x80;
+ v = v | 0x80;
if(pass != NULL) {
- v = v|(0x80>>1);
+ v = v | (0x80 >> 1);
}
}
@@ -109,301 +186,402 @@
buffer[length++] = ((MQTT_KEEPALIVE) >> 8);
buffer[length++] = ((MQTT_KEEPALIVE) & 0xFF);
- length = writeString(id,buffer,length);
- if (willTopic) {
- length = writeString(willTopic,buffer,length);
- length = writeString(willMessage,buffer,length);
+ length = writeString(id, buffer, length);
+ if(willTopic) {
+ length = writeString(willTopic, buffer, length);
+ length = writeString(willMessage, buffer, length);
}
if(user != NULL) {
- length = writeString(user,buffer,length);
+ length = writeString(user, buffer, length);
if(pass != NULL) {
- length = writeString(pass,buffer,length);
+ length = writeString(pass, buffer, length);
}
}
- write(MQTTCONNECT,buffer,length-5);
+ write(MQTTCONNECT, buffer, length - 5);
lastInActivity = lastOutActivity = time(NULL);
- while (!_client->available()) {
- time_t t = time(NULL);
- if (t-lastInActivity > MQTT_KEEPALIVE) {
+ while(!_client->available()) {
+ unsigned long t = time(NULL);
+ if(t - lastInActivity > MQTT_KEEPALIVE) {
_client->stop();
return false;
}
}
- uint8_t llen;
- uint16_t len = readPacket(&llen);
- if (len == 4 && buffer[3] == 0) {
+ uint8_t llen;
+ uint16_t len = readPacket(&llen);
+
+ if(len == 4 && buffer[3] == 0) {
lastInActivity = time(NULL);
pingOutstanding = false;
return true;
}
}
+
_client->stop();
}
+
return false;
}
-uint8_t MQTTClient::readByte()
-{
- while(!_client->available()) {}
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+uint8_t MQTTClient::readByte(void) {
+ while(!_client->available()) { }
+
return _client->read();
}
-uint16_t MQTTClient::readPacket(uint8_t* lengthLength)
-{
- uint16_t len = 0;
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+uint16_t MQTTClient::readPacket(uint8_t* lengthLength) {
+ uint16_t len = 0;
buffer[len++] = readByte();
- 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 {
+ 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
+ {
digit = readByte();
buffer[len++] = digit;
length += (digit & 127) * multiplier;
multiplier *= 128;
- } while ((digit & 128) != 0);
- *lengthLength = len-1;
+ } while((digit & 128) != 0);
+ *lengthLength = len - 1;
- if (isPublish) {
+ if(isPublish) {
+
// Read in topic length to calculate bytes to skip over for Stream writing
buffer[len++] = readByte();
buffer[len++] = readByte();
- skip = (buffer[*lengthLength+1]<<8)+buffer[*lengthLength+2];
+ skip = (buffer[*lengthLength + 1] << 8) + buffer[*lengthLength + 2];
start = 2;
- if (buffer[0]&MQTTQOS1) {
+ if(buffer[0] & MQTTQOS1) {
+
// skip message id
skip += 2;
}
}
- for (uint16_t i = start; i<length; i++) {
+ for(uint16_t i = start; i < length; i++) {
digit = readByte();
- if (this->stream) {
- if (isPublish && len-*lengthLength-2>skip) {
+ if(this->stream) {
+ if(isPublish && len -*lengthLength - 2 > skip) {
this->stream->putc(digit);
}
}
- if (len < MQTT_MAX_PACKET_SIZE) {
+
+ 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.
+ if(!this->stream && len > MQTT_MAX_PACKET_SIZE) {
+ len = 0; // This will cause the packet to be ignored.
}
return len;
}
-bool MQTTClient::loop()
-{
- if (connected()) {
- time_t t = time(NULL);
- if ((t - lastInActivity > MQTT_KEEPALIVE) || (t - lastOutActivity > MQTT_KEEPALIVE)) {
- if (pingOutstanding) {
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+bool MQTTClient::loop(void) {
+ if(connected()) {
+ unsigned long t = time(NULL);
+ if((t - lastInActivity > MQTT_KEEPALIVE) || (t - lastOutActivity > MQTT_KEEPALIVE)) {
+ if(pingOutstanding) {
_client->stop();
return false;
- } else {
+ }
+ else {
buffer[0] = MQTTPINGREQ;
buffer[1] = 0;
- _client->write(buffer,2);
+ _client->write(buffer, 2);
lastOutActivity = t;
lastInActivity = t;
pingOutstanding = true;
}
}
- if (_client->available()) {
- uint8_t llen;
- uint16_t len = readPacket(&llen);
- uint16_t msgId = 0;
- uint8_t *payload;
- if (len > 0) {
+
+ if(_client->available()) {
+ uint8_t llen;
+ uint16_t len = readPacket(&llen);
+ uint16_t msgId = 0;
+ uint8_t* payload;
+ if(len > 0) {
lastInActivity = t;
- uint8_t type = buffer[0]&0xF0;
- if (type == MQTTPUBLISH) {
- if (onMessage) {
- uint16_t tl = (buffer[llen+1]<<8)+buffer[llen+2];
- char topic[tl+1];
- for (uint16_t i=0; i<tl; i++) {
- topic[i] = buffer[llen+3+i];
+
+ uint8_t type = buffer[0] & 0xF0;
+ if(type == MQTTPUBLISH) {
+ if(onMessage) {
+ uint16_t tl = (buffer[llen + 1] << 8) + buffer[llen + 2];
+ char topic[tl + 1];
+ for(uint16_t i = 0; i < tl; i++) {
+ topic[i] = buffer[llen + 3 + i];
}
+
topic[tl] = 0;
+
// msgId only present for QOS>0
- if ((buffer[0]&0x06) == MQTTQOS1) {
- msgId = (buffer[llen+3+tl]<<8)+buffer[llen+3+tl+1];
- payload = buffer+llen+3+tl+2;
- onMessage(topic,payload,len-llen-3-tl-2);
+ if((buffer[0] & 0x06) == MQTTQOS1) {
+ msgId = (buffer[llen + 3 + tl] << 8) + buffer[llen + 3 + tl + 1];
+ payload = buffer + llen + 3 + tl + 2;
+ onMessage(topic, payload, len - llen - 3 - tl - 2);
buffer[0] = MQTTPUBACK;
buffer[1] = 2;
buffer[2] = (msgId >> 8);
buffer[3] = (msgId & 0xFF);
- _client->write(buffer,4);
+ _client->write(buffer, 4);
lastOutActivity = t;
-
- } else {
- payload = buffer+llen+3+tl;
- onMessage(topic,payload,len-llen-3-tl);
+ }
+ else {
+ payload = buffer + llen + 3 + tl;
+ onMessage(topic, payload, len - llen - 3 - tl);
}
}
- } else if (type == MQTTPINGREQ) {
+ }
+ else
+ if(type == MQTTPINGREQ) {
buffer[0] = MQTTPINGRESP;
buffer[1] = 0;
- _client->write(buffer,2);
- } else if (type == MQTTPINGRESP) {
+ _client->write(buffer, 2);
+ }
+ else
+ if(type == MQTTPINGRESP) {
pingOutstanding = false;
}
}
}
+
return true;
}
+
return false;
}
-bool MQTTClient::publish(char* topic, char* payload)
-{
- return publish(topic,(uint8_t*)payload,strlen(payload),false);
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+bool MQTTClient::publish(char* topic, char* payload) {
+ return publish(topic, (uint8_t*)payload, strlen(payload), false);
}
-bool MQTTClient::publish(char* topic, uint8_t* payload, unsigned int plength)
-{
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+bool MQTTClient::publish(char* topic, uint8_t* payload, unsigned int plength) {
return publish(topic, payload, plength, false);
}
-bool MQTTClient::publish(char* topic, uint8_t* payload, unsigned int plength, bool retained)
-{
- if (connected()) {
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+bool MQTTClient::publish(char* topic, uint8_t* payload, unsigned int plength, bool retained) {
+ if(connected()) {
+
// Leave room in the buffer for header and variable length field
- uint16_t length = 5;
- length = writeString(topic,buffer,length);
- uint16_t i;
- for (i=0; i<plength; i++) {
+ uint16_t length = 5;
+ length = writeString(topic, buffer, length);
+
+ uint16_t i;
+ for(i = 0; i < plength; i++) {
buffer[length++] = payload[i];
}
+
uint8_t header = MQTTPUBLISH;
- if (retained) {
+ if(retained) {
header |= 1;
}
- return write(header,buffer,length-5);
+
+ return write(header, buffer, length - 5);
}
+
return false;
}
-bool MQTTClient::write(uint8_t header, uint8_t* buf, uint16_t length)
-{
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+bool MQTTClient::write(uint8_t header, uint8_t* buf, uint16_t length) {
uint8_t lenBuf[4];
uint8_t llen = 0;
uint8_t digit;
uint8_t pos = 0;
uint8_t rc;
uint8_t len = length;
- do {
+ do
+ {
digit = len % 128;
len = len / 128;
- if (len > 0) {
+ if(len > 0) {
digit |= 0x80;
}
+
lenBuf[pos++] = digit;
llen++;
- } while(len>0);
+ } while(len > 0);
- buf[4-llen] = header;
- for (int i=0; i<llen; i++) {
- buf[5-llen+i] = lenBuf[i];
+ buf[4 - llen] = header;
+ for(int i = 0; i < llen; i++) {
+ buf[5 - llen + i] = lenBuf[i];
}
- rc = _client->write(buf+(4-llen),length+1+llen);
+
+ rc = _client->write(buf + (4 - llen), length + 1 + llen);
lastOutActivity = time(NULL);
- return (rc == 1+llen+length);
+ return(rc == 1 + llen + length);
}
-bool MQTTClient::subscribe(char* topic)
-{
- return subscribe(topic, 0);
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+bool MQTTClient::subscribe(char* topic) {
+ bool result = subscribe(topic, 0);
+ wait_ms(50);
+ return result;
}
-bool MQTTClient::subscribe(char* topic, uint8_t qos)
-{
- if (qos > 1)
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+bool MQTTClient::subscribe(char* topic, uint8_t qos) {
+ if(qos > 1)
return false;
- if (connected()) {
+ if(connected()) {
+
// Leave room in the buffer for header and variable length field
- uint16_t length = 5;
+ uint16_t length = 5;
nextMsgId++;
- if (nextMsgId == 0) {
+ if(nextMsgId == 0) {
nextMsgId = 1;
}
+
buffer[length++] = (nextMsgId >> 8);
buffer[length++] = (nextMsgId & 0xFF);
- length = writeString(topic, buffer,length);
+ length = writeString(topic, buffer, length);
buffer[length++] = qos;
- return write(MQTTSUBSCRIBE|MQTTQOS1,buffer,length-5);
+ return write(MQTTSUBSCRIBE | MQTTQOS1, buffer, length - 5);
}
+
return false;
}
-bool MQTTClient::unsubscribe(char* topic)
-{
- if (connected()) {
- uint16_t length = 5;
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+bool MQTTClient::unsubscribe(char* topic) {
+ if(connected()) {
+ uint16_t length = 5;
nextMsgId++;
- if (nextMsgId == 0) {
+ if(nextMsgId == 0) {
nextMsgId = 1;
}
+
buffer[length++] = (nextMsgId >> 8);
buffer[length++] = (nextMsgId & 0xFF);
- length = writeString(topic, buffer,length);
- return write(MQTTUNSUBSCRIBE|MQTTQOS1,buffer,length-5);
+ length = writeString(topic, buffer, length);
+ return write(MQTTUNSUBSCRIBE | MQTTQOS1, buffer, length - 5);
}
+
return false;
}
-void MQTTClient::disconnect()
-{
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+void MQTTClient::disconnect(void) {
buffer[0] = MQTTDISCONNECT;
buffer[1] = 0;
- _client->write(buffer,2);
+ _client->write(buffer, 2);
_client->stop();
lastInActivity = lastOutActivity = time(NULL);
}
-uint16_t MQTTClient::writeString(char* string, uint8_t* buf, uint16_t pos)
-{
- char* idp = string;
- uint16_t i = 0;
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+uint16_t MQTTClient::writeString(char* string, uint8_t* buf, uint16_t pos) {
+ char* idp = string;
+ uint16_t i = 0;
pos += 2;
- while (*idp) {
+ while(*idp) {
buf[pos++] = *idp++;
i++;
}
- buf[pos-i-2] = (i >> 8);
- buf[pos-i-1] = (i & 0xFF);
+
+ buf[pos - i - 2] = (i >> 8);
+ buf[pos - i - 1] = (i & 0xFF);
return pos;
}
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+bool MQTTClient::connected(void) {
+ bool rc;
+ if(_client == NULL) {
+ rc = false;
+ }
+ else {
+ rc = (int)_client->connected();
+ if(!rc)
+ _client->stop();
+ }
-bool MQTTClient::connected()
-{
- bool rc;
- if (_client == NULL ) {
- rc = false;
- } else {
- rc = (int)_client->connected();
- if (!rc) _client->stop();
- }
return rc;
}
-
-
-