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[api] Use stack buffers for peername logging to reduce per-connection memory

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This commit is contained in:
J. Nick Koston
2025-12-18 22:13:27 -10:00
parent f962497db1
commit cf404c34d0
11 changed files with 165 additions and 49 deletions
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esphome/components/api/api_connection.cpp
+25 -13
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@@ -128,8 +128,10 @@ void APIConnection::start() {
this->fatal_error_with_log_(LOG_STR("Helper init failed"), err);
return;
}
this->client_info_.peername = helper_->getpeername();
this->client_info_.name = this->client_info_.peername;
// Initialize client name with peername (IP address) until Hello message provides actual name
char peername[socket::PEERNAME_MAX_LEN];
this->helper_->getpeername_to(peername);
this->client_info_.name = peername;
}
APIConnection::~APIConnection() {
@@ -210,8 +212,7 @@ void APIConnection::loop() {
// Disconnect if not responded within 2.5*keepalive
if (now - this->last_traffic_ > KEEPALIVE_DISCONNECT_TIMEOUT) {
on_fatal_error();
ESP_LOGW(TAG, "%s (%s) is unresponsive; disconnecting", this->client_info_.name.c_str(),
this->client_info_.peername.c_str());
this->log_client_(ESPHOME_LOG_LEVEL_WARN, LOG_STR("is unresponsive; disconnecting"));
}
} else if (now - this->last_traffic_ > KEEPALIVE_TIMEOUT_MS && !this->flags_.remove) {
// Only send ping if we're not disconnecting
@@ -261,7 +262,7 @@ bool APIConnection::send_disconnect_response(const DisconnectRequest &msg) {
// remote initiated disconnect_client
// don't close yet, we still need to send the disconnect response
// close will happen on next loop
ESP_LOGD(TAG, "%s (%s) disconnected", this->client_info_.name.c_str(), this->client_info_.peername.c_str());
this->log_client_(ESPHOME_LOG_LEVEL_DEBUG, LOG_STR("disconnected"));
this->flags_.next_close = true;
DisconnectResponse resp;
return this->send_message(resp, DisconnectResponse::MESSAGE_TYPE);
@@ -1395,9 +1396,10 @@ void APIConnection::complete_authentication_() {
}
this->flags_.connection_state = static_cast<uint8_t>(ConnectionState::AUTHENTICATED);
ESP_LOGD(TAG, "%s (%s) connected", this->client_info_.name.c_str(), this->client_info_.peername.c_str());
this->log_client_(ESPHOME_LOG_LEVEL_DEBUG, LOG_STR("connected"));
#ifdef USE_API_CLIENT_CONNECTED_TRIGGER
this->parent_->get_client_connected_trigger()->trigger(this->client_info_.name, this->client_info_.peername);
// Trigger expects std::string, get fresh peername from socket
this->parent_->get_client_connected_trigger()->trigger(this->client_info_.name, this->helper_->getpeername());
#endif
#ifdef USE_HOMEASSISTANT_TIME
if (homeassistant::global_homeassistant_time != nullptr) {
@@ -1413,11 +1415,12 @@ void APIConnection::complete_authentication_() {
bool APIConnection::send_hello_response(const HelloRequest &msg) {
this->client_info_.name.assign(reinterpret_cast<const char *>(msg.client_info), msg.client_info_len);
this->client_info_.peername = this->helper_->getpeername();
this->client_api_version_major_ = msg.api_version_major;
this->client_api_version_minor_ = msg.api_version_minor;
char peername[socket::PEERNAME_MAX_LEN];
this->helper_->getpeername_to(peername);
ESP_LOGV(TAG, "Hello from client: '%s' | %s | API Version %" PRIu32 ".%" PRIu32, this->client_info_.name.c_str(),
this->client_info_.peername.c_str(), this->client_api_version_major_, this->client_api_version_minor_);
peername, this->client_api_version_major_, this->client_api_version_minor_);
HelloResponse resp;
resp.api_version_major = 1;
@@ -1724,12 +1727,12 @@ bool APIConnection::send_buffer(ProtoWriteBuffer buffer, uint8_t message_type) {
#ifdef USE_API_PASSWORD
void APIConnection::on_unauthenticated_access() {
this->on_fatal_error();
ESP_LOGD(TAG, "%s (%s) no authentication", this->client_info_.name.c_str(), this->client_info_.peername.c_str());
this->log_client_(ESPHOME_LOG_LEVEL_DEBUG, LOG_STR("no authentication"));
}
#endif
void APIConnection::on_no_setup_connection() {
this->on_fatal_error();
ESP_LOGD(TAG, "%s (%s) no connection setup", this->client_info_.name.c_str(), this->client_info_.peername.c_str());
this->log_client_(ESPHOME_LOG_LEVEL_DEBUG, LOG_STR("no connection setup"));
}
void APIConnection::on_fatal_error() {
this->helper_->close();
@@ -1977,9 +1980,18 @@ void APIConnection::process_state_subscriptions_() {
}
#endif // USE_API_HOMEASSISTANT_STATES
void APIConnection::log_client_(int level, const LogString *message) {
char peername[socket::PEERNAME_MAX_LEN];
this->helper_->getpeername_to(peername);
esp_log_printf_(level, TAG, __LINE__, ESPHOME_LOG_FORMAT("%s (%s): %s"), this->client_info_.name.c_str(), peername,
LOG_STR_ARG(message));
}
void APIConnection::log_warning_(const LogString *message, APIError err) {
ESP_LOGW(TAG, "%s (%s): %s %s errno=%d", this->client_info_.name.c_str(), this->client_info_.peername.c_str(),
LOG_STR_ARG(message), LOG_STR_ARG(api_error_to_logstr(err)), errno);
char peername[socket::PEERNAME_MAX_LEN];
this->helper_->getpeername_to(peername);
ESP_LOGW(TAG, "%s (%s): %s %s errno=%d", this->client_info_.name.c_str(), peername, LOG_STR_ARG(message),
LOG_STR_ARG(api_error_to_logstr(err)), errno);
}
} // namespace esphome::api