Feature Request

We should support extended Keep-Alive configuration (enabled, idle, interval, count) for more fine-grained control of keep-alive.

Is your feature request related to a problem? Please describe

Detection of dead peers, see #1428.

Describe the solution you'd like

Applying Keep-Alive channel options automatically.

Describe alternatives you've considered

Manual configuration, see #1428 (comment) and #1428 (comment).