Peon

Peon 1.4.23

Server owners: this one is for you. A fix in the bundled 1000eyes that could stop chunks from ever reaching a player.

Chunks that never loaded

• The packet a client uses to say how many chunks per tick it can take (AcknowledgeChunksC2SPacket) was refused above 64. A fast client on a flat world honestly reports 65 — and the vanilla server simply clamps it instead of complaining. The packet was quarantined, the server stopped hearing the acknowledgement, and it stopped sending chunks altogether: the player fell through the void.
• We now refuse only what vanilla refuses: NaN, infinity and zero. No ceiling.

Fewer questions asked of Mojang

• On an online-mode=true server, Mojang already verifies every session, so asking it a second time whether a username exists proves nothing. It only spent the 30-requests-per-minute budget — and when a flood of proxies drained it, the one being told "come back in a moment" was the honest newcomer. That check is now skipped when the server runs in online mode.

Everything from 1.4.22 (chat tabs, the twenty ranks, Mana and the Barterer) is unchanged.