omarchy-send/internal/discovery/probe_test.go
28allday 2c058031fd Add remote-peer support over Tailscale and unicast probing
Multicast only finds peers on the same LAN. Reach off-LAN boxes by probing
them directly over unicast (works over any routable address; Tailscale is the
easy, secure choice):

- discovery.Probe: unicast POST /register (https->http fallback) with a two-way
  handshake, so send and receive both work; offline peers age out.
- internal/tailscale: Peers() shells `tailscale status --json` for online peers.
- config.KnownPeers: persisted manual remotes.
- main.go: watchRemotes goroutine probes knownPeers ∪ tailscale peers every 10s,
  in both the normal TUI path and quick-send.
- TUI: `+` on Devices opens an add-remote modal (host/IP/Tailscale name).
- install.sh: interactive local/remote install prompt; remote mode locks port
  53317 to the Tailscale interface (ufw), with container/userspace-networking
  detection. README documents remote devices.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-02 21:47:52 +01:00

64 lines
2.2 KiB
Go

package discovery
import (
"context"
"encoding/json"
"net/http"
"net/http/httptest"
"strings"
"testing"
"omarchy-send/internal/protocol"
)
// TestProbeRegistersPeer drives Probe against a stub /register that behaves like
// a real peer: it records the caller and returns its own DeviceInfo. The https
// attempt fails against the plain-http test server and Probe falls back to http.
func TestProbeRegistersPeer(t *testing.T) {
peerInfo := protocol.DeviceInfo{Alias: "Remote", Fingerprint: "remote-fp", Port: 53317, Protocol: "http"}
var sawOurInfo bool
mux := http.NewServeMux()
mux.HandleFunc("/api/localsend/v2/register", func(w http.ResponseWriter, r *http.Request) {
var in protocol.DeviceInfo
if err := json.NewDecoder(r.Body).Decode(&in); err == nil && in.Fingerprint == "self-fp" {
sawOurInfo = true
}
_ = json.NewEncoder(w).Encode(peerInfo)
})
srv := httptest.NewServer(mux)
defer srv.Close()
host := strings.TrimPrefix(srv.URL, "http://") // host:port
d := New(protocol.DeviceInfo{Fingerprint: "self-fp", Alias: "Self"})
if err := d.Probe(context.Background(), host); err != nil {
t.Fatalf("Probe failed: %v", err)
}
if !sawOurInfo {
t.Error("peer did not receive our device info in the register body")
}
peers := d.Snapshot()
if len(peers) != 1 || peers[0].Info.Fingerprint != "remote-fp" {
t.Fatalf("peer not recorded as expected: %+v", peers)
}
if wantIP := strings.Split(host, ":")[0]; peers[0].IP != wantIP {
t.Errorf("peer IP = %q, want %q (the host we dialed)", peers[0].IP, wantIP)
}
}
func TestProbeUnreachableErrors(t *testing.T) {
d := New(protocol.DeviceInfo{Fingerprint: "self-fp"})
// 127.0.0.1:1 — nothing listening; both https and http should fail fast.
if err := d.Probe(context.Background(), "127.0.0.1:1"); err == nil {
t.Fatal("expected an error probing an unreachable host")
}
}
func TestHostPortDefaults(t *testing.T) {
if h, p := hostPort("colossus"); h != "colossus" || p != protocol.DefaultPort {
t.Errorf("hostPort(bare) = %q,%d; want colossus,%d", h, p, protocol.DefaultPort)
}
if h, p := hostPort("100.64.0.2:9999"); h != "100.64.0.2" || p != 9999 {
t.Errorf("hostPort(host:port) = %q,%d; want 100.64.0.2,9999", h, p)
}
}