Ignoring message with bad slackhook URL

[ayushin]

I have an issue similar to #61 when I try to add the Slack App in slack to another workspace.

To reproduce:

• create a classic slack app in slack following the instructions
• enable public distribution
• press Add to slack button and select any other webspace

All works until you are redirected to the matrix sever port 9898 which returns HTTP ERROR 404

And in the log file I see:

[SlackHookHandler] Ignoring message with bad slackhook URL /?code=257.....

[ayushin]

linked to #222

[ayushin]

i suppose you can not install the same slack app into multiple workspaces because there is no way to configure separate oauth keys

[ayushin]

This is because this app does not support slack v2 oauth2.0 flow so there is no way to install it to multiple workspaces (anymore?)

[ayushin]

https://api.slack.com/authentication/oauth-v2