tailscale/net/tlsdial/tlsdial_test.go
Claus Lensbøl 2015ce4081
health,ipn/ipnlocal: introduce eventbus in heath.Tracker (#17085)
The Tracker was using direct callbacks to ipnlocal. This PR moves those
to be triggered via the eventbus.

Additionally, the eventbus is now closed on exit from tailscaled
explicitly, and health is now a SubSystem in tsd.

Updates #15160

Signed-off-by: Claus Lensbøl <claus@tailscale.com>
2025-09-16 11:25:29 -04:00

113 lines
2.3 KiB
Go

// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause
package tlsdial
import (
"io"
"net"
"net/http"
"os"
"os/exec"
"path/filepath"
"runtime"
"sync/atomic"
"testing"
"tailscale.com/health"
"tailscale.com/net/bakedroots"
"tailscale.com/util/eventbus/eventbustest"
)
func TestFallbackRootWorks(t *testing.T) {
defer bakedroots.ResetForTest(t, nil)
const debug = false
if runtime.GOOS != "linux" {
t.Skip("test assumes Linux")
}
d := t.TempDir()
crtFile := filepath.Join(d, "tlsdial.test.crt")
keyFile := filepath.Join(d, "tlsdial.test.key")
caFile := filepath.Join(d, "rootCA.pem")
cmd := exec.Command("go",
"run", "filippo.io/mkcert",
"--cert-file="+crtFile,
"--key-file="+keyFile,
"tlsdial.test")
cmd.Env = append(os.Environ(), "CAROOT="+d)
out, err := cmd.CombinedOutput()
if err != nil {
t.Fatalf("mkcert: %v, %s", err, out)
}
if debug {
t.Logf("Ran: %s", out)
dents, err := os.ReadDir(d)
if err != nil {
t.Fatal(err)
}
for _, de := range dents {
t.Logf(" - %v", de)
}
}
caPEM, err := os.ReadFile(caFile)
if err != nil {
t.Fatal(err)
}
bakedroots.ResetForTest(t, caPEM)
ln, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
defer ln.Close()
if debug {
t.Logf("listener running at %v", ln.Addr())
}
done := make(chan struct{})
defer close(done)
errc := make(chan error, 1)
go func() {
err := http.ServeTLS(ln, http.HandlerFunc(sayHi), crtFile, keyFile)
select {
case <-done:
return
default:
t.Logf("ServeTLS: %v", err)
errc <- err
}
}()
tr := &http.Transport{
Dial: func(network, addr string) (net.Conn, error) {
return net.Dial("tcp", ln.Addr().String())
},
DisableKeepAlives: true, // for test cleanup ease
}
ht := health.NewTracker(eventbustest.NewBus(t))
tr.TLSClientConfig = Config(ht, tr.TLSClientConfig)
c := &http.Client{Transport: tr}
ctr0 := atomic.LoadInt32(&counterFallbackOK)
res, err := c.Get("https://tlsdial.test/")
if err != nil {
t.Fatal(err)
}
defer res.Body.Close()
if res.StatusCode != 200 {
t.Fatal(res.Status)
}
ctrDelta := atomic.LoadInt32(&counterFallbackOK) - ctr0
if ctrDelta != 1 {
t.Errorf("fallback root success count = %d; want 1", ctrDelta)
}
}
func sayHi(w http.ResponseWriter, r *http.Request) {
io.WriteString(w, "hi")
}