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Receive long MQTT payload (#1590)

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Gareth Cooper 2021-04-08 13:26:34 +01:00 committed by GitHub
parent eaf9735eda
commit e6f8e73705
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2 changed files with 12 additions and 3 deletions
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14
esphome/components/mqtt/mqtt_client.cpp
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@ -25,9 +25,17 @@ void MQTTClientComponent::setup() {
ESP_LOGCONFIG(TAG, "Setting up MQTT..."); ESP_LOGCONFIG(TAG, "Setting up MQTT...");
this->mqtt_client_.onMessage([this](char *topic, char *payload, AsyncMqttClientMessageProperties properties, this->mqtt_client_.onMessage([this](char *topic, char *payload, AsyncMqttClientMessageProperties properties,
size_t len, size_t index, size_t total) { size_t len, size_t index, size_t total) {
std::string payload_s(payload, len); if (index == 0)
std::string topic_s(topic); this->payload_buffer_.reserve(total);
this->on_message(topic_s, payload_s);
// append new payload, may contain incomplete MQTT message
this->payload_buffer_.append(payload, len);
// MQTT fully received
if (len + index == total) {
this->on_message(topic, this->payload_buffer_);
this->payload_buffer_.clear();
}
}); });
this->mqtt_client_.onDisconnect([this](AsyncMqttClientDisconnectReason reason) { this->mqtt_client_.onDisconnect([this](AsyncMqttClientDisconnectReason reason) {
this->state_ = MQTT_CLIENT_DISCONNECTED; this->state_ = MQTT_CLIENT_DISCONNECTED;

1
esphome/components/mqtt/mqtt_client.h
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@ -259,6 +259,7 @@ class MQTTClientComponent : public Component {
}; };
std::string topic_prefix_{}; std::string topic_prefix_{};
MQTTMessage log_message_; MQTTMessage log_message_;
std::string payload_buffer_;
int log_level_{ESPHOME_LOG_LEVEL}; int log_level_{ESPHOME_LOG_LEVEL};
std::vector<MQTTSubscription> subscriptions_; std::vector<MQTTSubscription> subscriptions_;