3x-ui/web/service
OleksandrParshyn 020cd63e22
Fix: Graceful Telegram bot shutdown to prevent 409 Conflict (#3580)
* Fix: Graceful Telegram bot shutdown to prevent 409 Conflict

Introduces a `botCancel` context and a global `StopBot()` function to ensure the Telegram bot's Long Polling operation is safely terminated (via context cancellation) before the service restarts. This prevents the "Conflict: another update consumer is running" (409) error upon panel restart.

Changes:
- Added `botCancel context.CancelFunc` to manage context cancellation.
- Implemented global `StopBot()` function.
- Updated `Tgbot.Stop()` to call `StopBot()`.
- Modified `Tgbot.OnReceive()` to use the new cancellable context for `UpdatesViaLongPolling`.

* Fix: Prevent race condition and goroutine leak in TgBot

Addresses a critical race condition on the global `botCancel` variable, which could occur if `Tgbot.OnReceive()` was called concurrently (e.g., during rapid panel restarts or unexpected behavior).

Changes in tgbot.go:
- Added `tgBotMutex sync.Mutex` to ensure thread safety.
- Protected `botCancel` creation and assignment in `OnReceive()` using the mutex, and added a check to prevent overwriting an active context, which avoids goroutine leaks.
- Protected the cancellation and cleanup logic in `StopBot()` with the mutex.

* Refactor: Replace time.Sleep with sync.WaitGroup for reliable TgBot shutdown

Replaced the unreliable `time.Sleep(1 * time.Second)` in `service.StopBot()` with `sync.WaitGroup`. This ensures the Long Polling goroutine is explicitly waited for and reliably exits before the panel continues, preventing potential resource leaks and incomplete shutdowns during restarts.

Changes:
- Added `botWG sync.WaitGroup` variable.
- Updated `service.StopBot()` to call `botWG.Wait()` instead of `time.Sleep()`.
- Modified `Tgbot.OnReceive()` to correctly use `botWG.Add(1)` and `defer botWG.Done()` within the Long Polling goroutine.
- Corrected the goroutine structure in `OnReceive()` to properly encapsulate all message handling logic.
2025-11-01 13:01:44 +01:00
..
config.json dokodemo-door, socks renamed to mixed, tunnel 2025-09-09 13:57:40 +02:00
inbound.go gofmt 2025-10-21 13:02:55 +02:00
outbound.go docs: add comments for all functions 2025-09-20 09:35:50 +02:00
panel.go docs: add comments for all functions 2025-09-20 09:35:50 +02:00
server.go fix(import): prevent sqlite disk I/O error by validating temp DB then swapping 2025-10-14 22:03:17 +02:00
setting.go gofmt 2025-10-21 13:02:55 +02:00
tgbot.go Fix: Graceful Telegram bot shutdown to prevent 409 Conflict (#3580) 2025-11-01 13:01:44 +01:00
user.go gofmt 2025-10-21 13:02:55 +02:00
warp.go docs: add comments for all functions 2025-09-20 09:35:50 +02:00
xray.go docs: add comments for all functions 2025-09-20 09:35:50 +02:00
xray_setting.go docs: add comments for all functions 2025-09-20 09:35:50 +02:00