Go modules · #2517

github.com/trzsz/tsshd

v0.1.9trzsz/tsshd ↗

Last release 1 months ago
17 Jul 2026
Ships on a steady schedule
a new release about every 2 weeks
Nearly every release is documented
notes for 9 of 10 stable releases
Nothing withdrawn
no release was ever pulled
2 years old
68 releases · first in 2024

Release timeline

68 releases since 2024

20252026

Releases

v0.1.917 Jul 2026
Release notes
This release introduces major improvements, including the highly requested ability to detach and attach sessions, as well as ProxyCommand support. It also ships with significant stability enhancements, resolving memory retention issues, blocking operations, and connection timeouts under high load.

🚀 Features
- Session Management & Attachment (#35): Implement robust session management. You can now detach from sessions without terminating them and safely discard previous terminal output upon reattachment (#39).
- ProxyCommand Support: Added support for ProxyCommand, which implies TCP proxy mode for more flexible routing.
- Network Diagnostics: Added an RTT callback for heartbeat acknowledgements to better monitor connection latency on the client side.
🐛 Bug Fixes
- Windows 11 ARM64 Display: Fixed Neovim (0.12.3) display misalignment on Windows 11 ARM64 by providing exact terminal dimensions during ConPTY creation (removes previous -1 column width offset).
- Hanging Accept Connections (#36): Fixed an issue where parked local connections (e.g., from ssh-add or git commit signing) hung indefinitely if the client never claimed them. These are now properly reaped after a timeout.
- Blocking Operations & Memory Leaks (#37): Resolved critical blocking operations, goroutine leaks, and memory retention issues during connection teardown, stream replacement, and repeated attach cycles. Stream writes are now interruptible.
- Client Concurrency: Fixed potential defer and goroutine bugs caused by named return values, and ensured the active checker is properly initialized before client setup.
🛠 Transport & Recovery Improvements
- Simplified Transport Recovery: Replaced proxy packet replay with PTO (QUIC) and RTO (KCP) resets on reconnect. Packets are now dropped when the backend is unavailable, relying natively on the transport layer to recover lost traffic.
- Crypto Delegation: Removed unnecessary proxy crypto delegation for non-attachable KCP connections.
📚 CI & Documentation
- CI/CD Automation (#38): Added automatic pre-release deployment via GitHub Workflows and fixed GoReleaser SemVer parsing errors.
- Documentation Updates: Updated UDP reconnect and timeout configuration docs, and added new screenshots demonstrating auto-reconnect and tsshd attach sessions.
New Contributors
- @aliceisjustplaying made their first contribution in #36
Full Changelog: v0.1.8...v0.1.9
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Additional notes
v0.1.9 Latest

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v0.1.9-0.20260704223320-5e1359d97be84 Jul 2026pre-release
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v0.1.9-0.20260627222501-a37e24c39be527 Jun 2026pre-release
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v0.1.9-0.20260620235652-7713cd6be7b120 Jun 2026pre-release
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v0.1.9-0.20260607040029-0bd47e6b6bc77 Jun 2026pre-release
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v0.1.9-0.20260601052052-184a045fccbb1 Jun 2026pre-release
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v0.1.9-0.20260531093936-a6064b2583f731 May 2026pre-release
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v0.1.9-0.20260529161027-096afb7c472429 May 2026pre-release
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v0.1.9-0.20260524063010-2a54c31c29cc24 May 2026pre-release
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v0.1.9-0.20260523153943-fabbb77bea4c23 May 2026pre-release
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v0.1.810 May 2026
Release notes
🚨 Key Fix
- Fix protocol corruption (#30): Held the bus lock until the handshake ACK is sent. This prevents diagnostic logs from interleaving with the handshake, which previously caused garbled data and connection issues.
🐛 Bug Fixes
- SSH Config: Improved Match criteria handling and fixed Match Group negations (#31, #32).
- QUIC: Fixed shared configuration mutation to improve stability (#33).
- Reliability:
  - Rejected empty subsystem commands (#34).
  - Fixed shared logging state and garbled input markers (#30).
New Contributors
- @mookim-eth made their first contribution in #31
Full Changelog: v0.1.7...v0.1.8
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v0.1.8

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v0.1.8-0.20260505075112-b9756a2acd815 May 2026pre-release
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v0.1.73 May 2026
Release notes
What's Changed

This release brings several major features and architectural improvements, enhancing connection flexibility, compatibility, and extensibility for developers.

🌟 Major Features
- Support UDP Port Forwarding: Fully supports UDP local and remote port forwarding. You can now route UDP traffic using the -L udp/... or -R udp/... CLI options, or via UdpLocalForward and UdpRemoteForward in your config. Forwarding via unixgram sockets is also supported.
- Support Rootshell Client & Session Attach: Removed the local listener mechanism and introduced the ability to re-attach to an existing server session after a client app relaunch or device reboot. This "attach" capability was specifically implemented to provide first-class support for the rootshell client (a free, Metal-accelerated terminal emulator for iPhone, iPad, Vision Pro, and Mac).
- Middleware Framework for Custom SSH Business Logic: Introduced a powerful middleware framework. Developers can now easily inject custom interactive logic into SSH sessions, leveraging tsshd's underlying capabilities to quickly build custom SSH servers with built-in seamless roaming and low-latency features.
🛠 Configuration & OpenSSH Compatibility
- Priority Configuration File: tsshd now uses $XDG_CONFIG_HOME/tsshd/sshd_config (defaults to ~/.config/tsshd/sshd_config) as the highest-priority configuration file. If present, it takes precedence over the system's OpenSSH configuration.
- OpenSSH-Aligned AcceptEnv Support: Fully implemented AcceptEnv support to align with OpenSSH behavior. It now defaults to accepting LANG and LC_* for better cross-distro compatibility. Additionally, DISPLAY and SSH_AUTH_SOCK are correctly passed to the session environment.
- Honor StreamLocalBindMask and StreamLocalBindUnlink: Aligned Unix Socket remote forwarding behavior with OpenSSH. It now safely unlinks existing sockets before binding and utilizes an inode/dev identity check during exit cleanup to prevent accidentally deleting another process's socket.
🐛 Enhancements & Fixes
- Network & Transport:
  - Added support for custom UDP MTU sizes.
  - Delegated KCP crypto to the proxy layer and fixed stale packet encryption issues across rekeys.
  - Implemented traffic sampling and playback to accelerate QUIC/KCP state recovery.
  - Introduced proactive dummy packet injection to prevent connection deadlocks during re-authentication.
- Connection Stability:
  - Supported per-session discardPendingInput and simplified the discard callback logic.
- Observability & Refactoring:
  - Improved keepalive logging to provide better diagnostics for reconnections and connection stabilization.
  - Suppressed noisy logs generated upon client-initiated UDP connection closures.
  - Optimized error handling and improved overall code readability.
New Contributors
- @chrisfinazzo made their first contribution in #17
- @kitknox made their first contribution in #19
- @ernie made their first contribution in #27
Full Changelog: v0.1.6...v0.1.7
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Additional notes
v0.1.7

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v0.1.7-rc3.0.20260425073558-51ae27ff69ff25 Apr 2026pre-release
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v0.1.7-rc3.0.20260424175707-bec37ca607cc24 Apr 2026pre-release
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v0.1.7-rc3.0.20260406162446-6145d1530c8b6 Apr 2026pre-release
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v0.1.7-rc3.0.20260404172806-f792cdc9dffc4 Apr 2026pre-release
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v0.1.7-rc3.0.20260330163352-50e1a5c5f44c30 Mar 2026pre-release
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v0.1.7-rc321 Mar 2026pre-release
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v0.1.7-rc2.0.20260321223557-7918c43b002521 Mar 2026pre-release
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v0.1.7-rc217 Mar 2026pre-release
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v0.1.7-rc115 Mar 2026pre-release
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v0.1.7-0.20260315103531-cfdef821f77615 Mar 2026pre-release
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v0.1.7-0.20260220164351-65799ae3dd1c20 Feb 2026pre-release
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v0.1.7-0.20260208110211-327f77bda87b8 Feb 2026pre-release
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v0.1.7-0.20260125135324-348ee5b4ec2225 Jan 2026pre-release
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v0.1.7-0.20260124021927-0201247bca3724 Jan 2026pre-release
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v0.1.617 Jan 2026
Release notes
This is a milestone release for tsshd.
It marks the transition from a basic, experimental implementation to a production-ready engineering version that works reliably across most environments.

Special thanks to @Drag0nFly for extensive testing and feedback (trzsz/trzsz-ssh#167).

Highlights
- Fully supports ProxyJump (major refactor and performance improvements)
- UDP-over-TCP support ( for TCP-only networks where UDP is blocked )
- Significantly improved user experience on connection loss and recovery
- Broad networking improvements with solid IPv4 / IPv6 support
- QUIC and KCP stability improvements, including rekey support
- Improved keep-alive logic and reduced unnecessary UDP traffic
- Better terminal compatibility (screen / tmux fixes, escape sequence filtering)
Networking & Forwarding
- Listen on appropriate IPv4 / IPv6 addresses
- Support multiple and discrete port ranges
- Subsystem support and forwarding access control
- X11 forwarding enhancements (X11UseLocalhost, XAuthLocation)
- Optimized ProxyJump forwarding throughput
- Improved QUIC compatibility and packet scheduling
Stability & UX
- Block I/O while disconnected
- Discard pending input/output during client disconnection
- Improved exit handling and debugging
- Fixed screen redraw issues and minor terminal glitches
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Additional notes
v0.1.6

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v0.1.6-rc9.0.20260111152858-565fb9eff29311 Jan 2026pre-release
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v0.1.6-rc9.0.20260110145726-e4e0bbd1c9fc10 Jan 2026pre-release
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v0.1.6-rc9.0.20260110070227-a379cc272c3710 Jan 2026pre-release
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v0.1.6-rc928 Dec 2025pre-release
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v0.1.6-rc8.0.20251227142027-7abd907687b227 Dec 2025pre-release
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v0.1.6-rc821 Dec 2025pre-release
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v0.1.6-rc714 Dec 2025pre-release
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v0.1.6-rc67 Dec 2025pre-release
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v0.1.6-rc530 Nov 2025pre-release
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v0.1.6-rc424 Nov 2025pre-release
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v0.1.6-rc323 Nov 2025pre-release
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v0.1.6-rc2.0.20251123122517-58dfd13bb4dc23 Nov 2025pre-release
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v0.1.6-rc2.0.20251116095117-e694f4569d4216 Nov 2025pre-release
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v0.1.6-rc210 Nov 2025pre-release
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v0.1.6-rc1111 Jan 2026pre-release
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v0.1.6-rc103 Jan 2026pre-release
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v0.1.6-rc19 Nov 2025pre-release
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v0.1.6-0.20251109135900-fd58fe06880c9 Nov 2025pre-release
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v0.1.6-0.20251102150350-af3868ce77b12 Nov 2025pre-release
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v0.1.526 Oct 2025
Release notes
- Support connection migration #8.
- Fix terminal columns on Windows #7.
- Cleanup forwarding unix socket on exit.
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v0.1.5

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v0.1.5-0.20251025013252-102fdea983e525 Oct 2025pre-release
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v0.1.419 Oct 2025
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v0.1.4-0.20251019062635-e930a8657a0819 Oct 2025pre-release
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v0.1.4-0.20251018170600-cc41910bd8f918 Oct 2025pre-release
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v0.1.4-0.20251012043817-c16ce99e18d612 Oct 2025pre-release
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v0.1.4-0.20250419171920-90970013870219 Apr 2025pre-release
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v0.1.4-0.20250419041956-0b2b5187a87619 Apr 2025pre-release
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v0.1.318 Aug 2024
Release notes
What's Changed
- Support custom port range #2
- Supports closing of sessions when killed #4
New Contributors
- @Hentioe made their first contribution in #4
Full Changelog: v0.1.2...v0.1.3
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Additional notes
v0.1.3

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v0.1.3-0.20240818085629-6094a55c509918 Aug 2024pre-release
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v0.1.3-0.20240802235136-e1e5793fe3f12 Aug 2024pre-release
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v0.1.3-0.20240728123755-e3d9535a080b28 Jul 2024pre-release
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v0.1.3-0.20240720085856-c35640ee47be20 Jul 2024pre-release
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github.com/trzsz/tsshd

Release timeline

Releases

🚀 Features

🐛 Bug Fixes

🛠 Transport & Recovery Improvements

📚 CI & Documentation

New Contributors

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🚨 Key Fix

🐛 Bug Fixes

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What's Changed

🌟 Major Features

🛠 Configuration & OpenSSH Compatibility

🐛 Enhancements & Fixes

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Highlights

Networking & Forwarding

Stability & UX

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What's Changed

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