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[mdns] Keep the original polling tick skip unchanged

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This commit is contained in:
J. Nick Koston
2026-09-05 21:28:35 +02:00
parent c01862a9eb
commit 28ec0441ea
1 changed files with 6 additions and 3 deletions
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esphome/components/mdns/mdns_esp8266.cpp
+6 -3
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@@ -87,10 +87,13 @@ void MDNSComponent::start_polling_window_() {
// uint32_t-ID set_interval/set_timeout already does atomic cancel-and-add.
this->set_interval(MDNS_POLL_ID, MDNS_UPDATE_INTERVAL_MS, []() {
#ifdef USE_MDNS_WIFI_LISTENER
// Every send fails while the radio is off channel or no interface is up, and each one
// spins sendTimeout() for 50 ms; skip the tick rather than stall the loop for nothing.
// MDNS.update() can suspend the loop in UdpContext::sendTimeout() while a send is
// failing (radio off-channel during a roam scan, or mid reconnect); an incoming
// packet then re-enters LEAmDNS from lwIP and corrupts shared UdpContext state.
// Skip the tick while the radio cannot transmit (#18760), but keep polling while
// the AP is serving clients (AP-only or fallback AP with the STA down).
auto *wifi = wifi::global_wifi_component;
if (wifi->is_roaming_scan_active() || (!wifi->is_connected() && !wifi->is_ap_active()))
if (wifi->is_roaming() || (!wifi->is_connected() && !wifi->is_ap_active()))
return;
#endif
mdns_responder.update_guarded();