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This commit is contained in:
J. Nick Koston
2026-01-19 14:24:57 -10:00
parent 2970d3d54f
commit 2c10ebe16a
1 changed files with 2 additions and 2 deletions
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esphome/components/mqtt/mqtt_client.cpp
+2 -2
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@@ -68,7 +68,7 @@ void MQTTClientComponent::setup() {
2);
// Format topic on stack - subscribe() copies it
// "esphome/ping/" (13) + name (31) + null (1) = 45
// "esphome/ping/" (13) + name (ESPHOME_DEVICE_NAME_MAX_LEN) + null (1)
constexpr size_t ping_topic_buffer_size = 13 + ESPHOME_DEVICE_NAME_MAX_LEN + 1;
char ping_topic[ping_topic_buffer_size];
buf_append_printf(ping_topic, sizeof(ping_topic), 0, "esphome/ping/%s", App.get_name().c_str());
@@ -86,7 +86,7 @@ void MQTTClientComponent::send_device_info_() {
return;
}
// Format topic on stack to avoid heap allocation
// "esphome/discover/" (17) + name (31) + null (1) = 49
// "esphome/discover/" (17) + name (ESPHOME_DEVICE_NAME_MAX_LEN) + null (1)
constexpr size_t topic_buffer_size = 17 + ESPHOME_DEVICE_NAME_MAX_LEN + 1;
char topic[topic_buffer_size];
buf_append_printf(topic, sizeof(topic), 0, "esphome/discover/%s", App.get_name().c_str());