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Adds retain support for publishing messages

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This commit is contained in:
Lucas Jandrew
2020-02-19 19:15:27 -05:00
parent 3693eb8800
commit 259cba0837
2 changed files with 9 additions and 9 deletions
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12
Adafruit_MQTT.cpp
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@ -297,13 +297,13 @@ bool Adafruit_MQTT::disconnect() {
}
bool Adafruit_MQTT::publish(const char *topic, const char *data, uint8_t qos) {
return publish(topic, (uint8_t*)(data), strlen(data), qos);
bool Adafruit_MQTT::publish(const char *topic, const char *data, uint8_t qos, bool retain) {
return publish(topic, (uint8_t*)(data), strlen(data), qos, retain);
}
bool Adafruit_MQTT::publish(const char *topic, uint8_t *data, uint16_t bLen, uint8_t qos) {
bool Adafruit_MQTT::publish(const char *topic, uint8_t *data, uint16_t bLen, uint8_t qos, bool retain) {
// Construct and send publish packet.
uint16_t len = publishPacket(buffer, topic, data, bLen, qos);
uint16_t len = publishPacket(buffer, topic, data, bLen, qos, retain);
if (!sendPacket(buffer, len))
return false;
@ -640,7 +640,7 @@ uint8_t Adafruit_MQTT::connectPacket(uint8_t *packet) {
// as per http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/os/mqtt-v3.1.1-os.html#_Toc398718040
uint16_t Adafruit_MQTT::publishPacket(uint8_t *packet, const char *topic,
uint8_t *data, uint16_t bLen, uint8_t qos) {
uint8_t *data, uint16_t bLen, uint8_t qos, bool retain) {
uint8_t *p = packet;
uint16_t len=0;
@ -653,7 +653,7 @@ uint16_t Adafruit_MQTT::publishPacket(uint8_t *packet, const char *topic,
len += bLen; // payload length
// Now you can start generating the packet!
p[0] = MQTT_CTRL_PUBLISH << 4 | qos << 1;
p[0] = MQTT_CTRL_PUBLISH << 4 | qos << 1 | retain;
p++;
// fill in packet[1] last