Feature/subscriber connection state

[ftejeria]

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

New Feature Submissions:

• Does your submission pass tests?
• Have you lint your code locally prior to submission?

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• New and existing tests pass locally with my changes
• I have verified the pub score with my changes