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120 lines
3.3 KiB
Go
120 lines
3.3 KiB
Go
package container // import "github.com/docker/docker/integration/container"
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import (
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"bytes"
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"context"
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"fmt"
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"io"
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"io/ioutil"
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"net"
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"strings"
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"testing"
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"time"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/integration/internal/container"
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"github.com/docker/docker/integration/internal/request"
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"github.com/docker/go-connections/nat"
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"github.com/gotestyourself/gotestyourself/assert"
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is "github.com/gotestyourself/gotestyourself/assert/cmp"
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"github.com/gotestyourself/gotestyourself/poll"
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"github.com/gotestyourself/gotestyourself/skip"
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)
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func TestNetworkNat(t *testing.T) {
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skip.If(t, testEnv.IsRemoteDaemon())
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defer setupTest(t)()
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msg := "it works"
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startServerContainer(t, msg, 8080)
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endpoint := getExternalAddress(t)
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conn, err := net.Dial("tcp", fmt.Sprintf("%s:%d", endpoint.String(), 8080))
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assert.NilError(t, err)
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defer conn.Close()
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data, err := ioutil.ReadAll(conn)
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assert.NilError(t, err)
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assert.Check(t, is.Equal(msg, strings.TrimSpace(string(data))))
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}
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func TestNetworkLocalhostTCPNat(t *testing.T) {
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skip.If(t, testEnv.IsRemoteDaemon())
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defer setupTest(t)()
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msg := "hi yall"
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startServerContainer(t, msg, 8081)
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conn, err := net.Dial("tcp", "localhost:8081")
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assert.NilError(t, err)
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defer conn.Close()
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data, err := ioutil.ReadAll(conn)
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assert.NilError(t, err)
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assert.Check(t, is.Equal(msg, strings.TrimSpace(string(data))))
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}
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func TestNetworkLoopbackNat(t *testing.T) {
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skip.If(t, testEnv.IsRemoteDaemon())
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defer setupTest(t)()
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msg := "it works"
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serverContainerID := startServerContainer(t, msg, 8080)
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endpoint := getExternalAddress(t)
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client := request.NewAPIClient(t)
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ctx := context.Background()
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cID := container.Run(t, ctx, client, container.WithCmd("sh", "-c", fmt.Sprintf("stty raw && nc -w 5 %s 8080", endpoint.String())), container.WithTty(true), container.WithNetworkMode("container:"+serverContainerID))
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poll.WaitOn(t, container.IsStopped(ctx, client, cID), poll.WithDelay(100*time.Millisecond))
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body, err := client.ContainerLogs(ctx, cID, types.ContainerLogsOptions{
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ShowStdout: true,
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})
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assert.NilError(t, err)
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defer body.Close()
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var b bytes.Buffer
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_, err = io.Copy(&b, body)
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assert.NilError(t, err)
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assert.Check(t, is.Equal(msg, strings.TrimSpace(b.String())))
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}
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func startServerContainer(t *testing.T, msg string, port int) string {
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client := request.NewAPIClient(t)
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ctx := context.Background()
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cID := container.Run(t, ctx, 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) {
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c.HostConfig.PortBindings = nat.PortMap{
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nat.Port(fmt.Sprintf("%d/tcp", port)): []nat.PortBinding{
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{
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HostPort: fmt.Sprintf("%d", port),
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},
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},
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}
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})
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poll.WaitOn(t, container.IsInState(ctx, client, cID, "running"), poll.WithDelay(100*time.Millisecond))
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return cID
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}
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func getExternalAddress(t *testing.T) net.IP {
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iface, err := net.InterfaceByName("eth0")
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skip.If(t, err != nil, "Test not running with `make test-integration`. Interface eth0 not found: %s", err)
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ifaceAddrs, err := iface.Addrs()
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assert.NilError(t, err)
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assert.Check(t, 0 != len(ifaceAddrs))
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ifaceIP, _, err := net.ParseCIDR(ifaceAddrs[0].String())
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assert.NilError(t, err)
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return ifaceIP
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}
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