+
+ // Set up an http server, and try using "arvados-client shell"
+ // to forward traffic to it.
+ httpTarget := &httpserver.Server{}
+ httpTarget.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+ c.Logf("httpTarget.Handler: incoming request: %s %s", r.Method, r.URL)
+ if r.URL.Path == "/foo" {
+ fmt.Fprintln(w, "bar baz")
+ } else {
+ w.WriteHeader(http.StatusNotFound)
+ }
+ })
+ err = httpTarget.Start()
+ c.Assert(err, check.IsNil)
+
+ ln, err := net.Listen("tcp", ":0")
+ c.Assert(err, check.IsNil)
+ _, forwardedPort, _ := net.SplitHostPort(ln.Addr().String())
+ ln.Close()
+
+ stdout.Reset()
+ stderr.Reset()
+ ctx, cancel := context.WithDeadline(context.Background(), time.Now().Add(10*time.Second))
+ defer cancel()
+ cmd = exec.CommandContext(ctx,
+ "go", "run", ".", "shell", uuid,
+ "-L", forwardedPort+":"+httpTarget.Addr,
+ "-o", "controlpath=none",
+ "-o", "userknownhostsfile="+c.MkDir()+"/known_hosts",
+ "-N",
+ )
+ c.Logf("cmd.Args: %s", cmd.Args)
+ cmd.Env = append(cmd.Env, os.Environ()...)
+ cmd.Env = append(cmd.Env, "ARVADOS_API_TOKEN="+arvadostest.ActiveTokenV2)
+ cmd.Stdout = &stdout
+ cmd.Stderr = &stderr
+ cmd.Start()
+
+ forwardedURL := fmt.Sprintf("http://localhost:%s/foo", forwardedPort)
+
+ for range time.NewTicker(time.Second / 20).C {
+ resp, err := http.Get(forwardedURL)
+ if err != nil {
+ if !strings.Contains(err.Error(), "connect") {
+ c.Fatal(err)
+ } else if ctx.Err() != nil {
+ if cmd.Process.Signal(syscall.Signal(0)) != nil {
+ c.Error("OpenSSH exited")
+ } else {
+ c.Errorf("timed out trying to connect: %s", err)
+ }
+ c.Logf("OpenSSH stdout:\n%s", stdout.String())
+ c.Logf("OpenSSH stderr:\n%s", stderr.String())
+ c.FailNow()
+ }
+ // Retry until OpenSSH starts listening
+ continue
+ }
+ c.Check(resp.StatusCode, check.Equals, http.StatusOK)
+ body, err := ioutil.ReadAll(resp.Body)
+ c.Check(err, check.IsNil)
+ c.Check(string(body), check.Equals, "bar baz\n")
+ break
+ }
+
+ var wg sync.WaitGroup
+ for i := 0; i < 10; i++ {
+ wg.Add(1)
+ go func() {
+ defer wg.Done()
+ resp, err := http.Get(forwardedURL)
+ if !c.Check(err, check.IsNil) {
+ return
+ }
+ body, err := ioutil.ReadAll(resp.Body)
+ c.Check(err, check.IsNil)
+ c.Check(string(body), check.Equals, "bar baz\n")
+ }()
+ }
+ wg.Wait()