ModernVoiceChat

Secure QUIC Transport

• Replaced the legacy raw UDP transport with real kwik QUIC/TLS 1.3 connections.
• Added RFC 9221 QUIC Datagram transport for low-latency, non-blocking Opus audio frames.
• Added an authenticated QUIC control stream using the Minecraft login session token.
• Added persistent server certificates and SHA-256 certificate pinning through the authenticated Minecraft channel.
• Added bounded authentication workers, five-second authentication deadlines, and per-session rate limits.
• Added duplicate, stale, malformed, and oversized packet rejection.
• Corrected Kwik keepalive lifetime handling and added automatic QUIC reconnection.
• Added bounded QUIC Datagram callback executors and deterministic executor cleanup.
• Added session epochs and atomic session replacement to prevent stale-stream packet rejection.
• Replaced the shared SFU bandwidth window with fair sender/recipient rate limits.

Radio System

• Implemented server-authoritative radio routing up to 1,000 metres.
• Radio traffic now requires the sender to be actively using a radio.
• Receivers must possess a radio tuned to the same frequency.
• Added server-calculated signal quality degradation between 700 and 1,000 metres.
• Synchronized frequency changes to the server and moved frequency storage from the item name to custom item data.
• Connected RadioTransmitEvent to actual transmission start and stop states.
• Validated legacy radio frequencies against NaN, infinity, and the supported range.
• Moved radio inventory and active-transmitter reads onto immutable server-tick snapshots.
• Added correct multi-radio receive matching and active-radio transmit frequency selection.

Audio Reliability and Quality

• Added one stateful Opus decoder per remote speaker to prevent cross-speaker decoder contamination.
• Added packet-loss concealment for short sequence gaps and rejected duplicate or excessively late frames.
• Added a 60 ms per-speaker jitter buffer for QUIC Datagram reordering.
• Moved capture transmission to a dedicated 20 ms audio loop instead of batching frames on game ticks.
• Added capture-time input-state selection and independent recorder subscriptions for microphone tests.
• Connected kwik RTT and packet-loss statistics to dynamic Opus payload and loss settings.
• Closed native Opus encoder and decoder resources during disconnects and reconnects.
• Added a soft output limiter to reduce clipping during simultaneous speech.
• Added five-second output-device retry backoff to prevent exception-log floods.

Configuration, API, and Lifecycle Fixes

• Persisted microphone and speaker mute states.
• Discarded queued microphone audio while muted to prevent delayed transmission after unmuting.
• Connected server mute and speaking-state APIs to the live packet path.
• Fixed direct-call isolation state when links are removed or players disconnect.
• Added server-controlled direct/group routing so long-distance calls bypass proximity attenuation.
• Made proximity isolation bidirectional and atomically updated.
• Applied voice-range configuration changes without requiring a server restart.
• Reinitialized microphone, speaker, and loopback lines after device changes.
• Fixed IPv6 server address parsing and removed unsafe localhost fallback after DNS failures.
• Added certificate validation and automatic rotation before expiry.

Packaging and Compatibility

• Declared Cloth Config API as a required client dependency.
• Corrected documentation about Opus4J native codec binaries.
• Restricted supported runtime versions to Minecraft 1.21.1 and NeoForge 21.1.x.
• Aligned Parchment mappings with Minecraft 1.21.1 (2024.11.17).
• Marked the Unix Gradle wrapper executable.
• Updated the NeoForge payload protocol to version 2.