`TFPHttpServer`
pl	ro	OnAllowConnect
pl	ro	OnRequest
pl	ro	OnRequestError
pl	ro	OnAcceptIdle
pl	ro	OnKeepConnectionIdle
pl	ro	OnUnexpectedError
pl	ro	OnLog

`TFPCustomHttpServer`
pt		OnAllowConnect
pt		OnRequest
pt		OnRequestError
pt		OnUnexpectedError
pt		OnAcceptIdle
pt		OnKeepConnectionIdle
pl		OnGetSocketHandler
pl		OnLog