Only Server Gunpack

1.1.0 — 2026-06-27

New Features

• RSA-2048 asymmetric handshake — client sends public key, server encrypts AES session key; MITM cannot decrypt even with full code access
• Server digital signature — SHA256withRSA signature on InitPacket; client rejects packets from fake servers
• Random key shuffle — per-session byte permutation on top of XOR mask; attacker needs both mask AND permutation to recover key
• Download overlay — vanilla dirt background with two-line progress display, hides HUD until download completes
• Real-time speed & progress — shows pack count, total percentage, MB/s speed, and received/total size
• Client freeze on join — player is invulnerable + frozen until gunpack download and reload complete
• i18n — all user-facing text in language files (zh_cn / en_us)

Changes

• Default maxPackSizeMB raised from 100 → 500
• Chunk send interval increased from 20ms → 50ms to reduce server thread load
• Chunks now sent directly from async thread without player.getServer().execute()
• Sequential pack delivery: client requests first pack, server sends rest via ACK flow
• SendGeneration counter prevents stale concurrent transfers

Fixes

• FileToIdConverter crash from non-standard file extensions in gunpacks
• Double-reload after download completion
• Resend state loss on CRC32 mismatch
• PlayerLoggedOutEvent firing in singleplayer