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[http_request] Make TLS buffer configurable on ESP8266 (#14009)

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Co-authored-by: Jonathan Swoboda <154711427+swoboda1337@users.noreply.github.com>
This commit is contained in:
AndreKR
2026-03-07 01:29:20 +01:00
committed by GitHub
parent d8deb2255d
commit f53ee70caa
4 changed files with 28 additions and 8 deletions
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10
esphome/components/http_request/__init__.py
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@@ -50,6 +50,8 @@ CONF_FOLLOW_REDIRECTS = "follow_redirects"
CONF_REDIRECT_LIMIT = "redirect_limit"
CONF_BUFFER_SIZE_RX = "buffer_size_rx"
CONF_BUFFER_SIZE_TX = "buffer_size_tx"
CONF_TLS_BUFFER_SIZE_RX = "tls_buffer_size_rx"
CONF_TLS_BUFFER_SIZE_TX = "tls_buffer_size_tx"
CONF_CA_CERTIFICATE_PATH = "ca_certificate_path"
CONF_MAX_RESPONSE_BUFFER_SIZE = "max_response_buffer_size"
@@ -124,6 +126,12 @@ CONFIG_SCHEMA = cv.All(
cv.SplitDefault(CONF_BUFFER_SIZE_TX, esp32=512): cv.All(
cv.uint16_t, cv.only_on_esp32
),
cv.SplitDefault(CONF_TLS_BUFFER_SIZE_RX, esp8266=512): cv.All(
cv.uint16_t, cv.only_on_esp8266
),
cv.SplitDefault(CONF_TLS_BUFFER_SIZE_TX, esp8266=512): cv.All(
cv.uint16_t, cv.only_on_esp8266
),
cv.Optional(CONF_CA_CERTIFICATE_PATH): cv.All(
cv.file_,
cv.Any(cv.only_on(PLATFORM_HOST), cv.only_on_esp32),
@@ -150,6 +158,8 @@ async def to_code(config):
if CORE.is_esp8266 and not config[CONF_ESP8266_DISABLE_SSL_SUPPORT]:
cg.add_define("USE_HTTP_REQUEST_ESP8266_HTTPS")
cg.add(var.set_tls_buffer_size_rx(config[CONF_TLS_BUFFER_SIZE_RX]))
cg.add(var.set_tls_buffer_size_tx(config[CONF_TLS_BUFFER_SIZE_TX]))
if timeout_ms := config.get(CONF_WATCHDOG_TIMEOUT):
cg.add(var.set_watchdog_timeout(timeout_ms))

8
esphome/components/http_request/http_request_arduino.cpp
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@@ -18,8 +18,6 @@ namespace esphome::http_request {
static const char *const TAG = "http_request.arduino";
#ifdef USE_ESP8266
static constexpr int RX_BUFFER_SIZE = 512;
static constexpr int TX_BUFFER_SIZE = 512;
// ESP8266 Arduino core (WiFiClientSecureBearSSL.cpp) returns -1000 on OOM
static constexpr int ESP8266_SSL_ERR_OOM = -1000;
#endif
@@ -58,7 +56,7 @@ std::shared_ptr<HttpContainer> HttpRequestArduino::perform(const std::string &ur
ESP_LOGV(TAG, "ESP8266 HTTPS connection with WiFiClientSecure");
stream_ptr = std::make_unique<WiFiClientSecure>();
WiFiClientSecure *secure_client = static_cast<WiFiClientSecure *>(stream_ptr.get());
secure_client->setBufferSizes(RX_BUFFER_SIZE, TX_BUFFER_SIZE);
secure_client->setBufferSizes(this->tls_buffer_size_rx_, this->tls_buffer_size_tx_);
secure_client->setInsecure();
} else {
stream_ptr = std::make_unique<WiFiClient>();
@@ -138,8 +136,8 @@ std::shared_ptr<HttpContainer> HttpRequestArduino::perform(const std::string &ur
}
ESP_LOGW(TAG, "SSL failure: %s (Code: %d)", LOG_STR_ARG(error_msg), last_error);
if (last_error == ESP8266_SSL_ERR_OOM) {
ESP_LOGW(TAG, "Heap free: %u bytes, configured buffer sizes: %u bytes", ESP.getFreeHeap(),
static_cast<unsigned int>(RX_BUFFER_SIZE + TX_BUFFER_SIZE));
ESP_LOGW(TAG, "Configured TLS buffer sizes: %u/%u bytes, check max free heap block using the debug component",
(unsigned int) this->tls_buffer_size_rx_, (unsigned int) this->tls_buffer_size_tx_);
}
} else {
ESP_LOGW(TAG, "Connection failure with no error code");

10
esphome/components/http_request/http_request_arduino.h
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@@ -47,10 +47,20 @@ class HttpContainerArduino : public HttpContainer {
};
class HttpRequestArduino : public HttpRequestComponent {
public:
#ifdef USE_ESP8266
void set_tls_buffer_size_rx(uint16_t size) { this->tls_buffer_size_rx_ = size; }
void set_tls_buffer_size_tx(uint16_t size) { this->tls_buffer_size_tx_ = size; }
#endif
protected:
std::shared_ptr<HttpContainer> perform(const std::string &url, const std::string &method, const std::string &body,
const std::vector<Header> &request_headers,
const std::vector<std::string> &lower_case_collect_headers) override;
#ifdef USE_ESP8266
uint16_t tls_buffer_size_rx_{512};
uint16_t tls_buffer_size_tx_{512};
#endif
};
} // namespace esphome::http_request

8
tests/components/http_request/test.esp8266-ard.yaml
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@@ -1,4 +1,6 @@
substitutions:
verify_ssl: "false"
<<: !include common.yaml
http_request:
verify_ssl: false
tls_buffer_size_rx: 16384
tls_buffer_size_tx: 512