OAuth redirect after slack bot install does not pass temporary auth code

Version

4.12.2

Describe the bug

Installing a Slack Bot does not pass the temporary auth code to the landing page.

I’m working on a Slack Bot using Azure Bot Service and the .NET Bot Framework. In Slack I have the redirect URL set to https://slack.botframework.com per the docs.

In Azure Bot Service, I have a Landing Page URL set up to my site. When I install my bot into Slack, Slack redirects to https://slack.botframework.com which redirects to my landing page url and passes two parameters in the query string, teamid and signature. So far so good.

The problem is that in the first redirect, Slack is passing a code parameter. This is a temporary authorization code per the Slack docs. I expected https://slack.botframework.com to pass this code along to the landing page URL. Instead it passes a teamid and a signature. I understand what the teamid is, but cannot find any documentation of signature and what it’s used for.

To Reproduce

Steps to reproduce the behavior:

1. Install a Slack Bot built with Azure Bot Service into Slack

Expected behavior

The final redirect to the landing page URL would contain the Slack temporary auth code.

[stevkan]

@haacked, thank you for your patience. I’ve been able to set up the environment and am working on repro’ing the issue. I hope to have an update for you by EOD, possibly tomorrow.

[haacked]

@stevkan thanks for the response!