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[mdns] Use FixedVector for TXT records to reduce ESP32 flash usage

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This commit is contained in:
J. Nick Koston
2025-10-18 20:44:36 -10:00
parent a33ed5e47b
commit 6d1288c806
1 changed files with 3 additions and 2 deletions
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5
esphome/components/mdns/mdns_esp32.cpp
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@@ -31,7 +31,8 @@ void MDNSComponent::setup() {
mdns_instance_name_set(this->hostname_.c_str());
for (const auto &service : services) {
std::vector<mdns_txt_item_t> txt_records;
FixedVector<mdns_txt_item_t> txt_records;
txt_records.init(service.txt_records.size());
for (const auto &record : service.txt_records) {
mdns_txt_item_t it{};
// key and value are either compile-time string literals in flash or pointers to dynamic_txt_values_
@@ -42,7 +43,7 @@ void MDNSComponent::setup() {
}
uint16_t port = const_cast<TemplatableValue<uint16_t> &>(service.port).value();
err = mdns_service_add(nullptr, MDNS_STR_ARG(service.service_type), MDNS_STR_ARG(service.proto), port,
txt_records.data(), txt_records.size());
txt_records.begin(), txt_records.size());
if (err != ESP_OK) {
ESP_LOGW(TAG, "Failed to register service %s: %s", MDNS_STR_ARG(service.service_type), esp_err_to_name(err));