Apoxy v0.19.0

This release focuses on significant performance improvements to the tunnel subsystem and enhanced reliability through better connection management and monitoring.

Features

• Add async send queues per connection in muxer (35ccced)
• Add push-based TCP stats metrics (d04674d)
• Replace overlay metrics scraping with push over HTTP/3 (744e089)
• Add BFD server onDown callback for proactive endpoint drain (e08e06a)
• Distribute tunnel workers across multiple relay addresses (385787d)

Bug Fixes

• Fix BFD goroutine leak and missing connections gauge decrement (9faf84b)
• Fix Geneve MTU update on reload (17435fb)
• Fix homebrew tap updater by embedding formula template (a618679)

Improvements

• Tune TCP stack for high throughput (74add4f, 050d125)
• Bump TUN MTU to 1420 (17435fb)
• Bump upstream per-connection buffer limit to 1 MiB (cf38c3d)

Infrastructure

• Bump builder image to golang:1.25-bookworm (8657bfd)
• Switch quic-go and gvisor to remote fork refs (4cd8125)
• Add workflow_dispatch to release for manual homebrew formula updates (d03ad8c)

---

Full Changelog: https://github.com/apoxy-dev/apoxy/compare/v0.18.1...v0.19.0

---