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Code Issues Releases Wiki Activity

Fix slow noise handshake by reading multiple messages per loop

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This commit is contained in:
J. Nick Koston
2025-06-18 18:36:55 +02:00
parent 6667336bd8
commit 3f71c09b7b
1 changed files with 35 additions and 25 deletions
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60
esphome/components/api/api_connection.cpp
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@@ -28,6 +28,12 @@
namespace esphome {
namespace api {
// Read a maximum of 5 messages per loop iteration to prevent starving other components.
// This is a balance between API responsiveness and allowing other components to run.
// Since each message could contain multiple protobuf messages when using packet batching,
// this limits the number of messages processed, not the number of TCP packets.
static constexpr uint8_t MAX_MESSAGES_PER_LOOP = 5;
static const char *const TAG = "api.connection";
static const int ESP32_CAMERA_STOP_STREAM = 5000;
@@ -109,33 +115,38 @@ void APIConnection::loop() {
return;
}
const uint32_t now = App.get_loop_component_start_time();
// Check if socket has data ready before attempting to read
if (this->helper_->is_socket_ready()) {
ReadPacketBuffer buffer;
err = this->helper_->read_packet(&buffer);
if (err == APIError::WOULD_BLOCK) {
// pass
} else if (err != APIError::OK) {
on_fatal_error();
if (err == APIError::SOCKET_READ_FAILED && errno == ECONNRESET) {
ESP_LOGW(TAG, "%s: Connection reset", this->client_combined_info_.c_str());
} else if (err == APIError::CONNECTION_CLOSED) {
ESP_LOGW(TAG, "%s: Connection closed", this->client_combined_info_.c_str());
} else {
ESP_LOGW(TAG, "%s: Reading failed: %s errno=%d", this->client_combined_info_.c_str(), api_error_to_str(err),
errno);
}
return;
} else {
this->last_traffic_ = App.get_loop_component_start_time();
// read a packet
if (buffer.data_len > 0) {
this->read_message(buffer.data_len, buffer.type, &buffer.container[buffer.data_offset]);
} else {
this->read_message(0, buffer.type, nullptr);
}
if (this->remove_)
// Read up to MAX_MESSAGES_PER_LOOP messages per loop to improve throughput
for (uint8_t message_count = 0; message_count < MAX_MESSAGES_PER_LOOP; message_count++) {
ReadPacketBuffer buffer;
err = this->helper_->read_packet(&buffer);
if (err == APIError::WOULD_BLOCK) {
// No more data available
break;
} else if (err != APIError::OK) {
on_fatal_error();
if (err == APIError::SOCKET_READ_FAILED && errno == ECONNRESET) {
ESP_LOGW(TAG, "%s: Connection reset", this->client_combined_info_.c_str());
} else if (err == APIError::CONNECTION_CLOSED) {
ESP_LOGW(TAG, "%s: Connection closed", this->client_combined_info_.c_str());
} else {
ESP_LOGW(TAG, "%s: Reading failed: %s errno=%d", this->client_combined_info_.c_str(), api_error_to_str(err),
errno);
}
return;
} else {
this->last_traffic_ = now;
// read a packet
if (buffer.data_len > 0) {
this->read_message(buffer.data_len, buffer.type, &buffer.container[buffer.data_offset]);
} else {
this->read_message(0, buffer.type, nullptr);
}
if (this->remove_)
return;
}
}
}
@@ -152,7 +163,6 @@ void APIConnection::loop() {
static uint8_t max_ping_retries = 60;
static uint16_t ping_retry_interval = 1000;
const uint32_t now = App.get_loop_component_start_time();
if (this->sent_ping_) {
// Disconnect if not responded within 2.5*keepalive
if (now - this->last_traffic_ > (KEEPALIVE_TIMEOUT_MS * 5) / 2) {