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[api] Split process_batch_ to reduce stack on single-message hot path

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Clamp buffer pre-allocation to MAX_BATCH_PACKET_SIZE.
This commit is contained in:
J. Nick Koston
2026-02-10 07:09:21 -06:00
parent bab8d1e8b2
commit 937715c91c
1 changed files with 4 additions and 0 deletions
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4
esphome/components/api/api_connection.cpp
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@@ -1923,6 +1923,10 @@ void APIConnection::process_batch_() {
for (size_t i = 0; i < num_items; i++) {
total_estimated_size += this->deferred_batch_[i].estimated_size;
}
// Clamp to MAX_BATCH_PACKET_SIZE — we won't send more than that per batch
if (total_estimated_size > MAX_BATCH_PACKET_SIZE) {
total_estimated_size = MAX_BATCH_PACKET_SIZE;
}
this->prepare_first_message_buffer(shared_buf, header_padding, total_estimated_size);