* Devirtualize calls to Read and Update by marking concrete implementations as final
* Removed derived class template argument
* Specialize boost::asio::basic_stream_socket for boost::asio::io_context instead of type-erased any_io_executor
* Make socket initialization easier composable (before entering Read loop)
* Remove use of deprecated boost::asio::null_buffers and boost::beast::ssl_stream
- Fix a handful of 1/256 bugs with most significant byte zero in BigNumber
- Get rid of (most of) the C-style arrays in authserver
- CryptoRandom as a unified source for cryptographic randomness
- Bring our other crypto APIs into 2020
- BigNumber usability improvements
- Authserver is now actually readable as a result of all of the above
(cherry picked from commit 210176fd91)
* Don't hide banned game accounts from list.
* Display proper ban messages with suspension time remaining.
* More appropriate error codes for bans and locks
* This improves concurrency by removes thread synchronization when checking login tickets
* Also allows users to use external (web based) login systems
Each network thread has its own io_service - this means that all operations on a given socket except queueing packets run from a single thread, removing the need for locking
Sending packets now writes to a lockfree intermediate queue directly, encryption is applied in network thread if it was required at the time of sending the packet
* Changed packet structures to mirror client names
* Simplified ToString Building
* Removed deprecated structures
World: Cleaned up duplicate realm info 'realm' and 'realmHandle' variables (realmHandle was removed, that data is fully contained in realm)
