+func (s *executorSuite) TestIPAddress(c *C) {
+ // Listen on an available port on the host.
+ ln, err := net.Listen("tcp", net.JoinHostPort("0.0.0.0", "0"))
+ c.Assert(err, IsNil)
+ defer ln.Close()
+ _, port, err := net.SplitHostPort(ln.Addr().String())
+ c.Assert(err, IsNil)
+
+ // Start a container that listens on the same port number that
+ // is already in use on the host.
+ s.spec.Command = []string{"nc", "-l", "-p", port, "-e", "printf", `HTTP/1.1 418 I'm a teapot\r\n\r\n`}
+ s.spec.EnableNetwork = true
+ c.Assert(s.executor.Create(s.spec), IsNil)
+ c.Assert(s.executor.Start(), IsNil)
+ starttime := time.Now()
+
+ ctx, cancel := context.WithDeadline(context.Background(), time.Now().Add(10*time.Second))
+ defer cancel()
+
+ for ctx.Err() == nil {
+ time.Sleep(time.Second / 10)
+ _, err := s.executor.IPAddress()
+ if err == nil {
+ break
+ }
+ }
+ // When we connect to the port using s.executor.IPAddress(),
+ // we should reach the nc process running inside the
+ // container, not the net.Listen() running outside the
+ // container, even though both listen on the same port.
+ ip, err := s.executor.IPAddress()
+ if c.Check(err, IsNil) && c.Check(ip, Not(Equals), "") {
+ req, err := http.NewRequest("BREW", "http://"+net.JoinHostPort(ip, port), nil)
+ c.Assert(err, IsNil)
+ resp, err := http.DefaultClient.Do(req)
+ c.Assert(err, IsNil)
+ c.Check(resp.StatusCode, Equals, http.StatusTeapot)
+ }
+
+ s.executor.Stop()
+ code, _ := s.executor.Wait(ctx)
+ c.Logf("container ran for %v", time.Now().Sub(starttime))
+ c.Check(code, Equals, -1)
+
+ c.Logf("stdout:\n%s\n\n", s.stdout.String())
+ c.Logf("stderr:\n%s\n\n", s.stderr.String())
+}
+
+func (s *executorSuite) TestInject(c *C) {
+ hostdir := c.MkDir()
+ c.Assert(os.WriteFile(hostdir+"/testfile", []byte("first tube"), 0777), IsNil)
+ mountdir := fmt.Sprintf("/injecttest-%d", os.Getpid())
+ s.spec.Command = []string{"sleep", "10"}
+ s.spec.BindMounts = map[string]bindmount{mountdir: {HostPath: hostdir, ReadOnly: true}}
+ c.Assert(s.executor.Create(s.spec), IsNil)
+ c.Assert(s.executor.Start(), IsNil)
+ starttime := time.Now()
+
+ ctx, cancel := context.WithDeadline(context.Background(), time.Now().Add(2*time.Second))
+ defer cancel()
+
+ // Allow InjectCommand to fail a few times while the container
+ // is starting
+ for ctx.Err() == nil {
+ _, err := s.executor.InjectCommand(ctx, "", "root", false, []string{"true"})
+ if err == nil {
+ break
+ }
+ time.Sleep(time.Second / 10)
+ }
+
+ injectcmd := []string{"cat", mountdir + "/testfile"}
+ cmd, err := s.executor.InjectCommand(ctx, "", "root", false, injectcmd)
+ c.Assert(err, IsNil)
+ out, err := cmd.CombinedOutput()
+ c.Logf("inject %s => %q", injectcmd, out)
+ c.Check(err, IsNil)
+ c.Check(string(out), Equals, "first tube")
+
+ s.executor.Stop()
+ code, _ := s.executor.Wait(ctx)
+ c.Logf("container ran for %v", time.Now().Sub(starttime))
+ c.Check(code, Equals, -1)
+}
+