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fix: only touch the task watchdog from tasks that are subscribed to it

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Only loop() is subscribed.  setConnected() runs on the WiFi event task
and reached SocketEmitter::endEmit(), whose plain esp_task_wdt_reset()
logged "esp_task_wdt_reset(707): task not found" on every boot.  The web
and socket handlers on async_tcp did the same.

/scanaps on async_tcp called esp_task_wdt_add(NULL) after the scan,
subscribing a task that nothing resets, so the board could panic 15 s
after a scan from the UI.

TaskWdt.h resets only a subscribed task and re-adds a task after a long
call only when it was watched before.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
cjkas 2026-10-21 13:45:04 +02:00
parent e9109c56e0
commit 609cd455c6
10 changed files with 154 additions and 57 deletions
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34
test/stubs/esp_task_wdt.h Normal file
View file

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#pragma once
// Stands in for ESP-IDF's task watchdog for one calling task. Tests set
// whether it is subscribed and count the resets.
typedef int esp_err_t;
#ifndef ESP_OK
#define ESP_OK 0
#endif
#ifndef ESP_ERR_NOT_FOUND
#define ESP_ERR_NOT_FOUND 0x105
#endif
struct FakeTaskWdt {
bool subscribed = false;
int resets = 0;
int adds = 0;
};
inline FakeTaskWdt fakeTaskWdt;
inline esp_err_t esp_task_wdt_status(void *) { return fakeTaskWdt.subscribed ? ESP_OK : ESP_ERR_NOT_FOUND; }
inline esp_err_t esp_task_wdt_reset() {
if(!fakeTaskWdt.subscribed) return ESP_ERR_NOT_FOUND;
fakeTaskWdt.resets++;
return ESP_OK;
}
inline esp_err_t esp_task_wdt_delete(void *) {
if(!fakeTaskWdt.subscribed) return ESP_ERR_NOT_FOUND;
fakeTaskWdt.subscribed = false;
return ESP_OK;
}
inline esp_err_t esp_task_wdt_add(void *) {
fakeTaskWdt.adds++;
fakeTaskWdt.subscribed = true;
return ESP_OK;
}