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[packet_transport] Fix packet size check to account for round4 padding (#13165)

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Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
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Jonathan SwobodaandClaude Opus 4.5 committed 2026-01-13 11:01:21 -05:00
1 parent dede47477b
commit 3911991de2
1 file changed
+2 -2
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esphome/components/packet_transport/packet_transport.cpp
+2 -2
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@@ -269,7 +269,7 @@ void PacketTransport::flush_() {
void PacketTransport::add_binary_data_(uint8_t key, const char *id, bool data) {
auto len = 1 + 1 + 1 + strlen(id);
if (len + this->header_.size() + this->data_.size() > this->get_max_packet_size()) {
if (round4(this->header_.size()) + round4(this->data_.size() + len) > this->get_max_packet_size()) {
this->flush_();
this->init_data_();
}
@@ -284,7 +284,7 @@ void PacketTransport::add_data_(uint8_t key, const char *id, float data) {
void PacketTransport::add_data_(uint8_t key, const char *id, uint32_t data) {
auto len = 4 + 1 + 1 + strlen(id);
if (len + this->header_.size() + this->data_.size() > this->get_max_packet_size()) {
if (round4(this->header_.size()) + round4(this->data_.size() + len) > this->get_max_packet_size()) {
this->flush_();
this->init_data_();
}