NOTE
Netty Server Startup: Binding the Port
Asynchronous local-address bind, channel activation, failure handling, and bind future completion.
This is a historical learning note and may contain outdated or incomplete understanding.
Binding schedules/performs the transport’s local-address bind on the registered channel’s event loop. Success makes the server channel active/listening and completes the returned future; failure completes it exceptionally and should clean up the channel.
Startup code should observe the future and only advertise readiness after the listener is actually bound.
OS backlog/address-reuse behavior remains transport/platform/configuration-specific.