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Brad Fitzpatrick 3e34e721e8 tsnet: add opt-in SSH support (Server.ListenSSH)

This adds tsnet.Server.ListenSSH which, if the SSH feature is linked,
returns a net.Listener whose Accept yields *tailssh.Session values (as
net.Conn). This lets tsnet apps accept incoming SSH connections to
implement custom TUI applications.

Basic apps can use net.Conn directly (Read/Write/Close). Rich apps
import ssh/tailssh and type-assert for peer identity, PTY, signals,
etc. If feature/ssh isn't imported, ListenSSH returns an error.

Includes a demo guess-the-number game in tsnet/example/ssh-game.

Updates tailscale/corp#37839

Change-Id: I4e7c3c96afb030cdf4da8f2d8b2253820628129a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>

2026-05-30 14:17:50 -07:00

README.md

tsnet: add opt-in SSH support (Server.ListenSSH)

2026-05-30 14:17:50 -07:00

ssh-game.go

tsnet: add opt-in SSH support (Server.ListenSSH)

2026-05-30 14:17:50 -07:00

README.md

ssh-game

The ssh-game server demonstrates how to use tsnet's ListenSSH to build a custom SSH application. It runs a simple "guess the number" game.

Usage:

go run ./tsnet/example/ssh-game

Then from another Tailscale node:

ssh -p 2222 <hostname>