| package container // import "github.com/docker/docker/integration/container" |
| |
| import ( |
| "bytes" |
| "context" |
| "fmt" |
| "io" |
| "net" |
| "strings" |
| "testing" |
| "time" |
| |
| "github.com/docker/docker/api/types" |
| "github.com/docker/docker/integration/internal/container" |
| "github.com/docker/go-connections/nat" |
| "gotest.tools/v3/assert" |
| is "gotest.tools/v3/assert/cmp" |
| "gotest.tools/v3/poll" |
| "gotest.tools/v3/skip" |
| ) |
| |
| func TestNetworkNat(t *testing.T) { |
| skip.If(t, testEnv.OSType == "windows", "FIXME") |
| skip.If(t, testEnv.IsRemoteDaemon) |
| |
| defer setupTest(t)() |
| |
| msg := "it works" |
| startServerContainer(t, msg, 8080) |
| |
| endpoint := getExternalAddress(t) |
| conn, err := net.Dial("tcp", net.JoinHostPort(endpoint.String(), "8080")) |
| assert.NilError(t, err) |
| defer conn.Close() |
| |
| data, err := io.ReadAll(conn) |
| assert.NilError(t, err) |
| assert.Check(t, is.Equal(msg, strings.TrimSpace(string(data)))) |
| } |
| |
| func TestNetworkLocalhostTCPNat(t *testing.T) { |
| skip.If(t, testEnv.IsRemoteDaemon) |
| |
| defer setupTest(t)() |
| |
| msg := "hi yall" |
| startServerContainer(t, msg, 8081) |
| |
| conn, err := net.Dial("tcp", "localhost:8081") |
| assert.NilError(t, err) |
| defer conn.Close() |
| |
| data, err := io.ReadAll(conn) |
| assert.NilError(t, err) |
| assert.Check(t, is.Equal(msg, strings.TrimSpace(string(data)))) |
| } |
| |
| func TestNetworkLoopbackNat(t *testing.T) { |
| skip.If(t, testEnv.GitHubActions, "FIXME: https://github.com/moby/moby/issues/41561") |
| skip.If(t, testEnv.OSType == "windows", "FIXME") |
| skip.If(t, testEnv.IsRemoteDaemon) |
| |
| defer setupTest(t)() |
| |
| msg := "it works" |
| serverContainerID := startServerContainer(t, msg, 8080) |
| |
| endpoint := getExternalAddress(t) |
| |
| client := testEnv.APIClient() |
| ctx := context.Background() |
| |
| cID := container.Run(ctx, t, client, |
| container.WithCmd("sh", "-c", fmt.Sprintf("stty raw && nc -w 1 %s 8080", endpoint.String())), |
| container.WithTty(true), |
| container.WithNetworkMode("container:"+serverContainerID), |
| ) |
| |
| poll.WaitOn(t, container.IsStopped(ctx, client, cID), poll.WithDelay(100*time.Millisecond)) |
| |
| body, err := client.ContainerLogs(ctx, cID, types.ContainerLogsOptions{ |
| ShowStdout: true, |
| }) |
| assert.NilError(t, err) |
| defer body.Close() |
| |
| var b bytes.Buffer |
| _, err = io.Copy(&b, body) |
| assert.NilError(t, err) |
| |
| assert.Check(t, is.Equal(msg, strings.TrimSpace(b.String()))) |
| } |
| |
| func startServerContainer(t *testing.T, msg string, port int) string { |
| t.Helper() |
| client := testEnv.APIClient() |
| ctx := context.Background() |
| |
| cID := container.Run(ctx, t, client, |
| container.WithName("server-"+t.Name()), |
| container.WithCmd("sh", "-c", fmt.Sprintf("echo %q | nc -lp %d", msg, port)), |
| container.WithExposedPorts(fmt.Sprintf("%d/tcp", port)), |
| func(c *container.TestContainerConfig) { |
| c.HostConfig.PortBindings = nat.PortMap{ |
| nat.Port(fmt.Sprintf("%d/tcp", port)): []nat.PortBinding{ |
| { |
| HostPort: fmt.Sprintf("%d", port), |
| }, |
| }, |
| } |
| }) |
| |
| poll.WaitOn(t, container.IsInState(ctx, client, cID, "running"), poll.WithDelay(100*time.Millisecond)) |
| |
| return cID |
| } |
| |
| // getExternalAddress() returns the external IP-address from eth0. If eth0 has |
| // multiple IP-addresses, it returns the first IPv4 IP-address; if no IPv4 |
| // address is present, it returns the first IP-address found. |
| func getExternalAddress(t *testing.T) net.IP { |
| t.Helper() |
| iface, err := net.InterfaceByName("eth0") |
| skip.If(t, err != nil, "Test not running with `make test-integration`. Interface eth0 not found: %s", err) |
| |
| ifaceAddrs, err := iface.Addrs() |
| assert.NilError(t, err) |
| assert.Check(t, 0 != len(ifaceAddrs)) |
| |
| if len(ifaceAddrs) > 1 { |
| // Prefer IPv4 address if multiple addresses found, as rootlesskit |
| // does not handle IPv6 currently https://github.com/moby/moby/pull/41908#issuecomment-774200001 |
| for _, a := range ifaceAddrs { |
| ifaceIP, _, err := net.ParseCIDR(a.String()) |
| assert.NilError(t, err) |
| if ifaceIP.To4() != nil { |
| return ifaceIP |
| } |
| } |
| } |
| ifaceIP, _, err := net.ParseCIDR(ifaceAddrs[0].String()) |
| assert.NilError(t, err) |
| |
| return ifaceIP |
| } |