nats-io/nats-server v2.14.8-RC.2 on GitHub

Changelog

Refer to the 2.14 Upgrade Guide for backwards compatibility notes with 2.12.x. Please note that the 2.13.x version was skipped.

JetStream

Fast batch publish now reports backward sequence gaps as well as forward gaps (#8699)
Stream pending message calculations avoid unnecessary filestore cache access and handle deleted sequence ranges more efficiently (#8680, #8681)
Stream restore waits for the preferred node to become leader, avoiding an incorrect create response during clustered restore (#8690)
Memory backed streams avoid copying message headers and bodies twice when storing messages (#8652)

Monitoring

MQTT

Partial packets are no longer copied in full on every read, reducing allocations and buffer copying (#8692)

General

Fixed several data races affecting service imports and exports during configuration reloads and account updates (#8675)
Per-account routes no longer double count inbound account message and byte statistics (#8677)
TLS certificate pin validation now checks the correct pins after a configuration reload (#8679)
Fast batch ping no longer starts a new batch incorrectly (#8714)
Auth callout rejections are now reported as authentication errors instead of account connection limit errors (#8688)
Scoped ProxyRequired settings are now respected in JWTs and auth callouts (#8694)
Subscription interest notifications are no longer missed when a subscription is added or removed concurrently (#8703)

Leafnodes

TLS state is now available to auth callouts when leafnodes connect over WebSockets (#8686)
Leafnode clients are now shed alongside regular clients during lame duck shutdown, avoiding a thundering herd (#8695)
Remote proxies now support TLS with https:// proxy URLs and an optional proxy tls block (#8701)
Remote proxies no longer incorrectly warn that nats:// URLs are unsupported or lose the hub's initial INFO message (#8701)
Remote proxy options are now rejected when no proxy URL is specified (#8701)

JetStream

Fixed a panic when shutting down a clustered JetStream server immediately after startup (#8707)
Idempotent stream create requests with sources no longer time out after leader changes (#8703)

MQTT