Sonar

• Implement more interactionless checks #378
  • Add legit swing verification check
  • Recode vehicle movement check
  • Fix hotbar (slot) check never actually working

This release patches a recently found bypass by ttProxy.

• Don't allow players to send empty packets
• Recode Y position and gravity calculation
• Implement SetPlayerRotationPacket packet order check
• Implement PaddleBoatPacket packet order check
• Optimize image RGB buffer writing
• Randomize some placeholder variables during login
• Remove useless PlayerInfoPacket
• Only log expired database entries if there are any
• Don't load the database driver twice
• Use regular JdbcConnectionSource, not pooled
• VarInt encoding optimizations PaperMC/Velocity@f034c02
• VarInt reading optimizations PaperMC/Velocity#1418
• Fix multiple block types being incorrect on 1.16

• Use shared exceptions in hot code #372
• Don't handle the handshake for server pings
• Merge failCountCache and blacklist into one
• Optimize login check order/priority
• Use host address instead of raw InetAddress
• Recode the join rate-limiter
• Code style improvements and micro-optimizations
  • Remove unnecessary ctx.channel() calls
  • Reduce usage of channel.isActive()

This is a hotfix release that fixes a NullPointerException on start under certain circumstances.

• Recode CAPTCHA generation #367
• Fix Bedrock users sometimes verifying multiple times
• Fix a bug where Bedrock users were unable to verify at all
• Fix Bedrock false flagging the vehicle speed check
• Bump dependencies
  • Bump h2databases from 2.1.214 to 2.2.220
  • Bump mysql-connector-j from 8.4.0 to 9.0.0
  • Bump mariadb-java-client from 3.4.0 to 3.4.1
  • Bump bstats from 3.0.2 to 3.0.3 #364
• Don't create duplicate entries in database
• Exempt fake (spoofed) players from being checked

• Log client brand and locale if invalid
• Fix incorrect usage of libby since 55030c5
• Bump dependencies #362, d15b3c8
• Use rotation packets to improve the vehicle check
• Add verification.checks.vehicle.minimum-packets to config