9 "github.com/docker/docker/integration-cli/checker"
10 "github.com/docker/docker/integration-cli/cli"
11 "github.com/go-check/check"
14 func startServerContainer(c *check.C, msg string, port int) string {
21 "-p", fmt.Sprintf("%d:%d", port, port),
23 "sh", "-c", fmt.Sprintf("echo %q | nc -lp %d", msg, port),
25 cli.DockerCmd(c, cmd...)
30 func getExternalAddress(c *check.C) net.IP {
31 iface, err := net.InterfaceByName("eth0")
33 c.Skip(fmt.Sprintf("Test not running with `make test`. Interface eth0 not found: %v", err))
36 ifaceAddrs, err := iface.Addrs()
37 c.Assert(err, check.IsNil)
38 c.Assert(ifaceAddrs, checker.Not(checker.HasLen), 0)
40 ifaceIP, _, err := net.ParseCIDR(ifaceAddrs[0].String())
41 c.Assert(err, check.IsNil)
46 func (s *DockerSuite) TestNetworkNat(c *check.C) {
47 testRequires(c, DaemonIsLinux, SameHostDaemon)
49 startServerContainer(c, msg, 8080)
50 endpoint := getExternalAddress(c)
51 conn, err := net.Dial("tcp", fmt.Sprintf("%s:%d", endpoint.String(), 8080))
52 c.Assert(err, check.IsNil)
54 data, err := ioutil.ReadAll(conn)
56 c.Assert(err, check.IsNil)
58 final := strings.TrimRight(string(data), "\n")
59 c.Assert(final, checker.Equals, msg)
62 func (s *DockerSuite) TestNetworkLocalhostTCPNat(c *check.C) {
63 testRequires(c, DaemonIsLinux, SameHostDaemon)
67 startServerContainer(c, msg, 8081)
68 conn, err := net.Dial("tcp", "localhost:8081")
69 c.Assert(err, check.IsNil)
71 data, err := ioutil.ReadAll(conn)
73 c.Assert(err, check.IsNil)
75 final := strings.TrimRight(string(data), "\n")
76 c.Assert(final, checker.Equals, msg)
79 func (s *DockerSuite) TestNetworkLoopbackNat(c *check.C) {
80 testRequires(c, DaemonIsLinux, SameHostDaemon, NotUserNamespace)
82 startServerContainer(c, msg, 8080)
83 endpoint := getExternalAddress(c)
84 out, _ := dockerCmd(c, "run", "-t", "--net=container:server", "busybox",
85 "sh", "-c", fmt.Sprintf("stty raw && nc -w 5 %s 8080", endpoint.String()))
86 final := strings.TrimRight(string(out), "\n")
87 c.Assert(final, checker.Equals, msg)