A channel pipeline initializer for a TCP server.

Wraps Netty boilerplate for common TCP server handlers. Given a reference to a core, a stats package, a channel group, and a handler fn, returns a ChannelInboundHandlerAdapter which calls (handler core stats channel-handler-context message) for each received message.

Automatically handles channel closure, and handles exceptions thrown by the handler by logging an error and closing the channel.

Given an SSLContext, creates a new SSLEngine and a corresponding Netty SslHandler wrapping it.

Given a core, a channel, and a message, applies the message to core and writes a response back on this channel.