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Code Issues Releases Wiki Activity

Refactor duplicate socket read error handling in API frame helper

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This commit is contained in:
J. Nick Koston
2025-07-07 10:33:04 -05:00
parent 2510b5ffb5
commit 83c7afc46f
2 changed files with 31 additions and 44 deletions
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72
esphome/components/api/api_frame_helper.cpp
View File

@@ -225,6 +225,22 @@ APIError APIFrameHelper::init_common_() {
}
#define HELPER_LOG(msg, ...) ESP_LOGVV(TAG, "%s: " msg, this->info_.c_str(), ##__VA_ARGS__)
APIError APIFrameHelper::handle_socket_read_result_(ssize_t received) {
if (received == -1) {
if (errno == EWOULDBLOCK || errno == EAGAIN) {
return APIError::WOULD_BLOCK;
}
state_ = State::FAILED;
HELPER_LOG("Socket read failed with errno %d", errno);
return APIError::SOCKET_READ_FAILED;
} else if (received == 0) {
state_ = State::FAILED;
HELPER_LOG("Connection closed");
return APIError::CONNECTION_CLOSED;
}
return APIError::OK;
}
// uncomment to log raw packets
//#define HELPER_LOG_PACKETS
@@ -327,17 +343,9 @@ APIError APINoiseFrameHelper::try_read_frame_(ParsedFrame *frame) {
// no header information yet
uint8_t to_read = 3 - rx_header_buf_len_;
ssize_t received = this->socket_->read(&rx_header_buf_[rx_header_buf_len_], to_read);
if (received == -1) {
if (errno == EWOULDBLOCK || errno == EAGAIN) {
return APIError::WOULD_BLOCK;
}
state_ = State::FAILED;
HELPER_LOG("Socket read failed with errno %d", errno);
return APIError::SOCKET_READ_FAILED;
} else if (received == 0) {
state_ = State::FAILED;
HELPER_LOG("Connection closed");
return APIError::CONNECTION_CLOSED;
APIError err = handle_socket_read_result_(received);
if (err != APIError::OK) {
return err;
}
rx_header_buf_len_ += static_cast<uint8_t>(received);
if (static_cast<uint8_t>(received) != to_read) {
@@ -372,17 +380,9 @@ APIError APINoiseFrameHelper::try_read_frame_(ParsedFrame *frame) {
// more data to read
uint16_t to_read = msg_size - rx_buf_len_;
ssize_t received = this->socket_->read(&rx_buf_[rx_buf_len_], to_read);
if (received == -1) {
if (errno == EWOULDBLOCK || errno == EAGAIN) {
return APIError::WOULD_BLOCK;
}
state_ = State::FAILED;
HELPER_LOG("Socket read failed with errno %d", errno);
return APIError::SOCKET_READ_FAILED;
} else if (received == 0) {
state_ = State::FAILED;
HELPER_LOG("Connection closed");
return APIError::CONNECTION_CLOSED;
APIError err = handle_socket_read_result_(received);
if (err != APIError::OK) {
return err;
}
rx_buf_len_ += static_cast<uint16_t>(received);
if (static_cast<uint16_t>(received) != to_read) {
@@ -855,17 +855,9 @@ APIError APIPlaintextFrameHelper::try_read_frame_(ParsedFrame *frame) {
// Try to get to at least 3 bytes total (indicator + 2 varint bytes), then read one byte at a time
ssize_t received =
this->socket_->read(&rx_header_buf_[rx_header_buf_pos_], rx_header_buf_pos_ < 3 ? 3 - rx_header_buf_pos_ : 1);
if (received == -1) {
if (errno == EWOULDBLOCK || errno == EAGAIN) {
return APIError::WOULD_BLOCK;
}
state_ = State::FAILED;
HELPER_LOG("Socket read failed with errno %d", errno);
return APIError::SOCKET_READ_FAILED;
} else if (received == 0) {
state_ = State::FAILED;
HELPER_LOG("Connection closed");
return APIError::CONNECTION_CLOSED;
APIError err = handle_socket_read_result_(received);
if (err != APIError::OK) {
return err;
}
// If this was the first read, validate the indicator byte
@@ -949,17 +941,9 @@ APIError APIPlaintextFrameHelper::try_read_frame_(ParsedFrame *frame) {
// more data to read
uint16_t to_read = rx_header_parsed_len_ - rx_buf_len_;
ssize_t received = this->socket_->read(&rx_buf_[rx_buf_len_], to_read);
if (received == -1) {
if (errno == EWOULDBLOCK || errno == EAGAIN) {
return APIError::WOULD_BLOCK;
}
state_ = State::FAILED;
HELPER_LOG("Socket read failed with errno %d", errno);
return APIError::SOCKET_READ_FAILED;
} else if (received == 0) {
state_ = State::FAILED;
HELPER_LOG("Connection closed");
return APIError::CONNECTION_CLOSED;
APIError err = handle_socket_read_result_(received);
if (err != APIError::OK) {
return err;
}
rx_buf_len_ += static_cast<uint16_t>(received);
if (static_cast<uint16_t>(received) != to_read) {

3
esphome/components/api/api_frame_helper.h
View File

@@ -176,6 +176,9 @@ class APIFrameHelper {
// Common initialization for both plaintext and noise protocols
APIError init_common_();
// Helper method to handle socket read results
APIError handle_socket_read_result_(ssize_t received);
};
#ifdef USE_API_NOISE