[socketmode] EventsAPI is called multiple times for a single event

[rustycl0ck]

What happened

The app-mention event (this function) is triggered multiple times sometimes. I have observed it being triggered upto a total of 4 times maximum. Many times just 2-3 times too.

Expected behavior

It should be triggered just once per mention/message.

Steps to reproduce

Run the example and then wait for some time after mentioning the bot. The Yes, hello (from here) message is posted after a few seconds or minutes again.

reproducible code

https://github.com/slack-go/slack/blob/00d0e9a995c975504c6db72b35c9da491e493ae2/examples/socketmode_handler/socketmode_handler.go

manifest.yaml

Versions

• Go: go1.23.2 darwin/amd64
• slack-go/slack: v0.15.0

[nickolashkraus]

@rustycl0ck Are you responding to the request within three seconds:

Your app should respond to the event request with an HTTP 2xx within three seconds. If it does not, we'll consider the event delivery attempt failed. After a failure, we'll retry three times, backing off exponentially.

Source: Events API | Responding to events