An event to indicate to
AbstractConnectionToChannelBridge that the channel is ready to emit a new
Connection to the subscriber as published by
ChannelSubscriberEvent
Why do we need this?
Since, emitting a connection can include a handshake for protocols such as TLS/SSL, it is not so that a new
Connection should be emitted as soon as the channel is active (i.e. inside
ChannelInboundHandler.channelActive(ChannelHandlerContext)).
For this reason, this event leaves it to the pipeline or any other entity outside to decide, when is the rite time to
emit a connection.