57 lines
2.3 KiB
Markdown
57 lines
2.3 KiB
Markdown
# Important Notes
|
|
|
|
The Telegram Bot API has a few potentially unanticipated behaviors. Here are a
|
|
few of them. If any behavior was surprising to you, please feel free to open a
|
|
pull request!
|
|
|
|
## Callback Queries
|
|
|
|
- Every callback query must be answered, even if there is nothing to display to
|
|
the user. Failure to do so will show a loading icon on the keyboard until the
|
|
operation times out.
|
|
|
|
## ChatMemberUpdated
|
|
|
|
- In order to receive `ChatMember` updates, you must explicitly add
|
|
`UpdateTypeChatMember` to your `AllowedUpdates` when getting updates or
|
|
setting your webhook.
|
|
|
|
## Entities use UTF16
|
|
|
|
- When extracting text entities using offsets and lengths, characters can appear
|
|
to be in incorrect positions. This is because Telegram uses UTF16 lengths
|
|
while Golang uses UTF8. It's possible to convert between the two, see
|
|
[issue #231][issue-231] for more details.
|
|
|
|
[issue-231]: https://github.com/go-telegram-bot-api/telegram-bot-api/issues/231
|
|
|
|
## GetUpdatesChan
|
|
|
|
- This method is very basic and likely unsuitable for production use. Consider
|
|
creating your own implementation instead, as it's very simple to replicate.
|
|
- This method only allows your bot to process one update at a time. You can
|
|
spawn goroutines to handle updates concurrently or switch to webhooks instead.
|
|
Webhooks are suggested for high traffic bots.
|
|
|
|
## Nil Updates
|
|
|
|
- At most one of the fields in an `Update` will be set to a non-nil value. When
|
|
evaluating updates, you must make sure you check that the field is not nil
|
|
before trying to access any of it's fields.
|
|
|
|
## Privacy Mode
|
|
|
|
- By default, bots only get updates directly addressed to them. If you need to
|
|
get all messages, you must disable privacy mode with Botfather. Bots already
|
|
added to groups will need to be removed and readded for the changes to take
|
|
effect. You can read more on the [Telegram Bot API docs][api-docs].
|
|
|
|
[api-docs]: https://core.telegram.org/bots/faq#what-messages-will-my-bot-get
|
|
|
|
## User and Chat ID size
|
|
|
|
- These types require up to 52 significant bits to store correctly, making a
|
|
64-bit integer type required in most languages. They are already `int64` types
|
|
in this library, but make sure you use correct types when saving them to a
|
|
database or passing them to another language.
|