The docker-compose stack now serves Headscale (and its embedded DERP)
over TLS on port 8443 with a self-signed cert covering localhost,
127.0.0.1, and the docker-network hostname `headscale`. Tailscale
peers trust the cert via SSL_CERT_FILE; our test daemon uses
`derp_tls_insecure: true` (gated on the SUNBEAM_NET_TEST_DERP_INSECURE
env var) since pinning a self-signed root in tests is more trouble
than it's worth.
With TLS DERP working, the previously-ignored
`test_e2e_tcp_through_tunnel` test now passes: the daemon spawns,
registers, completes a Noise handshake over TLS, opens a TLS DERP
relay session, runs a real WireGuard handshake with peer-a (verified
via boringtun ↔ tailscale interop), and TCP-tunnels an HTTP GET
through smoltcp ↔ engine ↔ proxy ↔ test client. The 191-byte echo
response round-trips and the test asserts on its body.
- tests/config/headscale.yaml: tls_cert_path + tls_key_path, listen on
8443, server_url=https://headscale:8443
- tests/config/test-cert.pem + test-key.pem: 365-day self-signed RSA
cert with SAN DNS:localhost, DNS:headscale, IP:127.0.0.1
- tests/docker-compose.yml: mount certs into headscale + both peers,
set SSL_CERT_FILE on the peers, expose 8443 instead of 8080
- tests/run.sh: switch to https://localhost:8443, set
SUNBEAM_NET_TEST_DERP_INSECURE=1
- tests/integration.rs: drop the #[ignore] on test_e2e_tcp_through_tunnel,
read derp_tls_insecure from env in all four test configs
Adds an optional `cluster_api_host` field to VpnConfig. When set, the
daemon resolves it against the netmap's peer list once the first
netmap arrives and uses that peer's tailnet IP as the proxy backend,
overriding the static `cluster_api_addr`. Falls back to the static
addr if the hostname doesn't match any peer.
The resolver tries hostname first, then peer name (FQDN), then a
prefix match against name. Picks v4 over v6 from the peer's address
list.
- sunbeam-net/src/config.rs: new `cluster_api_host: Option<String>`
- sunbeam-net/src/daemon/lifecycle.rs: resolve_peer_ip helper +
resolution at proxy bind time
- sunbeam-net/tests/integration.rs: pass cluster_api_host: None in
the existing VpnConfig literals
- src/config.rs: new context field `vpn-cluster-host`
- src/vpn_cmds.rs: thread it from context → VpnConfig
- docker-compose.yml: run peer-a and peer-b with TS_USERSPACE=false +
/dev/net/tun device + cap_add. Pin peer-a's WG listen port to 41641
via TS_TAILSCALED_EXTRA_ARGS and publish it to the host so direct
UDP from outside docker has somewhere to land.
- run.sh: use an ephemeral pre-auth key for the test client so
Headscale auto-deletes the test node when its map stream drops
(instead of accumulating hundreds of stale entries that eventually
slow netmap propagation to a crawl). Disable shields-up on both
peers so the kernel firewall doesn't drop inbound tailnet TCP. Tweak
the JSON key extraction to handle pretty-printed output.
- integration.rs: add `test_e2e_tcp_through_tunnel` that brings up
the daemon, dials peer-a's echo server through the proxy, and
asserts the echo body comes back. Currently `#[ignore]`d — the
docker stack runs Headscale over plain HTTP, but Tailscale's client
unconditionally tries TLS to DERP relays ("tls: first record does
not look like a TLS handshake"), so peer-a can never receive
packets we forward via the relay. Unblocking needs either TLS
termination on the docker DERP or running the test inside the same
docker network as peer-a. Test stays in the tree because everything
it tests up to the read timeout is real verified behavior.
Spins up Headscale 0.23 (with embedded DERP) plus two Tailscale peers
in docker compose, generates pre-auth keys, and runs three integration
tests behind the `integration` feature:
- test_register_and_receive_netmap: full TS2021 → register → first
netmap fetch
- test_proxy_listener_accepts: starts the daemon and waits for it to
reach the Running state
- test_daemon_lifecycle: full lifecycle including DERP connect, then
clean shutdown via the DaemonHandle
Run with `sunbeam-net/tests/run.sh` (handles compose up/down + auth
key provisioning) or manually via cargo nextest with the env vars
SUNBEAM_NET_TEST_AUTH_KEY and SUNBEAM_NET_TEST_COORD_URL set.
