Custom / advanced event types.

[MengelCode]

We have the events connection, pre-disconnection and disconnection.
Is it planned to give a user a way to add custom / more advanced types of events?
I think of events such as:

*A message / data packet with specific content received, treat it elsewhere different from everything else.

• TCP connection still persists, but the last data packet received was some time ago, treat this case, e.g. with sending a "ping" (and hopefully receiving a "pong").
• Connection to other side lost (as a special case of disconection).

[jhg023]

@Mengel38 I'm open to adding events of other types.

However, I'm not a fan of an event that searches for data containing specific content. You can already achieve this by assigning opcodes to data that you send. When a specific opcode is received, special processing can be performed. I have an example of this in the README.

Currently, you also have the ability to track and update the last time a Client received any data from the Server by using an IdentityHashMap<Client, Instant>.

Regarding an event that would fire if a Client unexpectedly lost connection to the Server, I think is a reasonable request. I'll look into adding this soon.

Thanks for your suggestions!