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Code Issues Releases Wiki Activity

Disable automatic usage of SNTP servers from DHCP (#2273)

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This commit is contained in:
Oxan van Leeuwen
2021-09-13 02:44:39 +02:00
committed by GitHub
parent ede1de9021
commit 97a18717e6
2 changed files with 12 additions and 0 deletions
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6
esphome/components/wifi/wifi_component_esp32.cpp
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@@ -11,6 +11,7 @@
#endif
#include "lwip/err.h"
#include "lwip/dns.h"
#include "lwip/apps/sntp.h"
#include "esphome/core/helpers.h"
#include "esphome/core/log.h"
@@ -92,6 +93,11 @@ bool WiFiComponent::wifi_sta_ip_config_(optional<ManualIP> manual_ip) {
tcpip_adapter_dhcp_status_t dhcp_status;
tcpip_adapter_dhcpc_get_status(TCPIP_ADAPTER_IF_STA, &dhcp_status);
if (!manual_ip.has_value()) {
// lwIP starts the SNTP client if it gets an SNTP server from DHCP. We don't need the time, and more importantly,
// the built-in SNTP client has a memory leak in certain situations. Disable this feature.
// https://github.com/esphome/issues/issues/2299
sntp_servermode_dhcp(false);
// Use DHCP client
if (dhcp_status != TCPIP_ADAPTER_DHCP_STARTED) {
esp_err_t err = tcpip_adapter_dhcpc_start(TCPIP_ADAPTER_IF_STA);

6
esphome/components/wifi/wifi_component_esp8266.cpp
View File

@@ -16,6 +16,7 @@ extern "C" {
#include "lwip/dns.h"
#include "lwip/dhcp.h"
#include "lwip/init.h" // LWIP_VERSION_
#include "lwip/apps/sntp.h"
#if LWIP_IPV6
#include "lwip/netif.h" // struct netif
#endif
@@ -112,6 +113,11 @@ bool WiFiComponent::wifi_sta_ip_config_(optional<ManualIP> manual_ip) {
enum dhcp_status dhcp_status = wifi_station_dhcpc_status();
if (!manual_ip.has_value()) {
// lwIP starts the SNTP client if it gets an SNTP server from DHCP. We don't need the time, and more importantly,
// the built-in SNTP client has a memory leak in certain situations. Disable this feature.
// https://github.com/esphome/issues/issues/2299
sntp_servermode_dhcp(false);
// Use DHCP client
if (dhcp_status != DHCP_STARTED) {
bool ret = wifi_station_dhcpc_start();