TunnelCraft 5.0.0 – Patch Notes (Quality + Reconnect Update)

• Fixed desync issue (“Connection restored” but gameplay broken): The relay now ignores stale close events after a reconnect, preventing old sockets from tearing down a new session.

• Fixed reconnect failures caused by duplicate login: When a player reconnects using the same clientId, the relay cleanly replaces the old connection and notifies the server/plugin to close the previous slot.

• Fixed “rejoin world” / UnknownHost errors: The client now re-prepares the local tunnel listener before reconnecting, so Minecraft no longer attempts to DNS-resolve the tunnel ID.

Improved tunnel stability:

• Added WebSocket heartbeat (ping/pong) to quickly detect and terminate half-open connections.

• Added backpressure protection: connections that fall behind and buffer excessively are dropped cleanly instead of lagging indefinitely.

Improved tunnel speed and lower latency:

Enabled TCP_NODELAY and TCP keepalive on relay WebSockets.

Reduced per-packet allocation overhead in relay forwarding through more efficient frame construction.