//go:build !windows package main import ( "context" "encoding/json" "fmt" "net" "net/http" "net/http/httptest" "os" "strings" "testing" "time" "github.com/docker/docker/api/types" "github.com/docker/docker/api/types/versions/v1p20" "github.com/docker/docker/integration-cli/cli" "github.com/docker/docker/integration-cli/daemon" "github.com/docker/docker/libnetwork/driverapi" remoteapi "github.com/docker/docker/libnetwork/drivers/remote/api" "github.com/docker/docker/libnetwork/ipamapi" remoteipam "github.com/docker/docker/libnetwork/ipams/remote/api" "github.com/docker/docker/libnetwork/netlabel" "github.com/docker/docker/pkg/plugins" "github.com/docker/docker/pkg/stringid" "github.com/docker/docker/runconfig" "github.com/docker/docker/testutil" testdaemon "github.com/docker/docker/testutil/daemon" "github.com/vishvananda/netlink" "golang.org/x/sys/unix" "gotest.tools/v3/assert" is "gotest.tools/v3/assert/cmp" "gotest.tools/v3/icmd" ) const ( dummyNetworkDriver = "dummy-network-driver" dummyIPAMDriver = "dummy-ipam-driver" ) var remoteDriverNetworkRequest remoteapi.CreateNetworkRequest func (s *DockerNetworkSuite) SetUpTest(ctx context.Context, c *testing.T) { s.d = daemon.New(c, dockerBinary, dockerdBinary, testdaemon.WithEnvironment(testEnv.Execution)) } func (s *DockerNetworkSuite) TearDownTest(ctx context.Context, c *testing.T) { if s.d != nil { s.d.Stop(c) s.ds.TearDownTest(ctx, c) } } func (s *DockerNetworkSuite) SetUpSuite(ctx context.Context, c *testing.T) { mux := http.NewServeMux() s.server = httptest.NewServer(mux) assert.Assert(c, s.server != nil, "Failed to start an HTTP Server") setupRemoteNetworkDrivers(c, mux, s.server.URL, dummyNetworkDriver, dummyIPAMDriver) } func setupRemoteNetworkDrivers(c *testing.T, mux *http.ServeMux, url, netDrv, ipamDrv string) { mux.HandleFunc("/Plugin.Activate", func(w http.ResponseWriter, r *http.Request) { w.Header().Set("Content-Type", plugins.VersionMimetype) fmt.Fprintf(w, `{"Implements": ["%s", "%s"]}`, driverapi.NetworkPluginEndpointType, ipamapi.PluginEndpointType) }) // Network driver implementation mux.HandleFunc(fmt.Sprintf("/%s.GetCapabilities", driverapi.NetworkPluginEndpointType), func(w http.ResponseWriter, r *http.Request) { w.Header().Set("Content-Type", plugins.VersionMimetype) fmt.Fprintf(w, `{"Scope":"local"}`) }) mux.HandleFunc(fmt.Sprintf("/%s.CreateNetwork", driverapi.NetworkPluginEndpointType), func(w http.ResponseWriter, r *http.Request) { err := json.NewDecoder(r.Body).Decode(&remoteDriverNetworkRequest) if err != nil { http.Error(w, "Unable to decode JSON payload: "+err.Error(), http.StatusBadRequest) return } w.Header().Set("Content-Type", plugins.VersionMimetype) fmt.Fprintf(w, "null") }) mux.HandleFunc(fmt.Sprintf("/%s.DeleteNetwork", driverapi.NetworkPluginEndpointType), func(w http.ResponseWriter, r *http.Request) { w.Header().Set("Content-Type", plugins.VersionMimetype) fmt.Fprintf(w, "null") }) mux.HandleFunc(fmt.Sprintf("/%s.CreateEndpoint", driverapi.NetworkPluginEndpointType), func(w http.ResponseWriter, r *http.Request) { w.Header().Set("Content-Type", plugins.VersionMimetype) fmt.Fprintf(w, `{"Interface":{"MacAddress":"a0:b1:c2:d3:e4:f5"}}`) }) mux.HandleFunc(fmt.Sprintf("/%s.Join", driverapi.NetworkPluginEndpointType), func(w http.ResponseWriter, r *http.Request) { w.Header().Set("Content-Type", plugins.VersionMimetype) veth := &netlink.Veth{ LinkAttrs: netlink.LinkAttrs{Name: "randomIfName", TxQLen: 0}, PeerName: "cnt0", } if err := netlink.LinkAdd(veth); err != nil { fmt.Fprintf(w, `{"Error":"failed to add veth pair: `+err.Error()+`"}`) } else { fmt.Fprintf(w, `{"InterfaceName":{ "SrcName":"cnt0", "DstPrefix":"veth"}}`) } }) mux.HandleFunc(fmt.Sprintf("/%s.Leave", driverapi.NetworkPluginEndpointType), func(w http.ResponseWriter, r *http.Request) { w.Header().Set("Content-Type", plugins.VersionMimetype) fmt.Fprintf(w, "null") }) mux.HandleFunc(fmt.Sprintf("/%s.DeleteEndpoint", driverapi.NetworkPluginEndpointType), func(w http.ResponseWriter, r *http.Request) { w.Header().Set("Content-Type", plugins.VersionMimetype) if link, err := netlink.LinkByName("cnt0"); err == nil { netlink.LinkDel(link) } fmt.Fprintf(w, "null") }) // IPAM Driver implementation var ( poolRequest remoteipam.RequestPoolRequest poolReleaseReq remoteipam.ReleasePoolRequest addressRequest remoteipam.RequestAddressRequest addressReleaseReq remoteipam.ReleaseAddressRequest lAS = "localAS" gAS = "globalAS" pool = "172.28.0.0/16" poolID = lAS + "/" + pool gw = "172.28.255.254/16" ) mux.HandleFunc(fmt.Sprintf("/%s.GetDefaultAddressSpaces", ipamapi.PluginEndpointType), func(w http.ResponseWriter, r *http.Request) { w.Header().Set("Content-Type", plugins.VersionMimetype) fmt.Fprintf(w, `{"LocalDefaultAddressSpace":"`+lAS+`", "GlobalDefaultAddressSpace": "`+gAS+`"}`) }) mux.HandleFunc(fmt.Sprintf("/%s.RequestPool", ipamapi.PluginEndpointType), func(w http.ResponseWriter, r *http.Request) { err := json.NewDecoder(r.Body).Decode(&poolRequest) if err != nil { http.Error(w, "Unable to decode JSON payload: "+err.Error(), http.StatusBadRequest) return } w.Header().Set("Content-Type", plugins.VersionMimetype) if poolRequest.AddressSpace != lAS && poolRequest.AddressSpace != gAS { fmt.Fprintf(w, `{"Error":"Unknown address space in pool request: `+poolRequest.AddressSpace+`"}`) } else if poolRequest.Pool != "" && poolRequest.Pool != pool { fmt.Fprintf(w, `{"Error":"Cannot handle explicit pool requests yet"}`) } else { fmt.Fprintf(w, `{"PoolID":"`+poolID+`", "Pool":"`+pool+`"}`) } }) mux.HandleFunc(fmt.Sprintf("/%s.RequestAddress", ipamapi.PluginEndpointType), func(w http.ResponseWriter, r *http.Request) { err := json.NewDecoder(r.Body).Decode(&addressRequest) if err != nil { http.Error(w, "Unable to decode JSON payload: "+err.Error(), http.StatusBadRequest) return } w.Header().Set("Content-Type", plugins.VersionMimetype) // make sure libnetwork is now querying on the expected pool id if addressRequest.PoolID != poolID { fmt.Fprintf(w, `{"Error":"unknown pool id"}`) } else if addressRequest.Address != "" { fmt.Fprintf(w, `{"Error":"Cannot handle explicit address requests yet"}`) } else { fmt.Fprintf(w, `{"Address":"`+gw+`"}`) } }) mux.HandleFunc(fmt.Sprintf("/%s.ReleaseAddress", ipamapi.PluginEndpointType), func(w http.ResponseWriter, r *http.Request) { err := json.NewDecoder(r.Body).Decode(&addressReleaseReq) if err != nil { http.Error(w, "Unable to decode JSON payload: "+err.Error(), http.StatusBadRequest) return } w.Header().Set("Content-Type", plugins.VersionMimetype) // make sure libnetwork is now asking to release the expected address from the expected poolid if addressRequest.PoolID != poolID { fmt.Fprintf(w, `{"Error":"unknown pool id"}`) } else if addressReleaseReq.Address != gw { fmt.Fprintf(w, `{"Error":"unknown address"}`) } else { fmt.Fprintf(w, "null") } }) mux.HandleFunc(fmt.Sprintf("/%s.ReleasePool", ipamapi.PluginEndpointType), func(w http.ResponseWriter, r *http.Request) { err := json.NewDecoder(r.Body).Decode(&poolReleaseReq) if err != nil { http.Error(w, "Unable to decode JSON payload: "+err.Error(), http.StatusBadRequest) return } w.Header().Set("Content-Type", plugins.VersionMimetype) // make sure libnetwork is now asking to release the expected poolid if addressRequest.PoolID != poolID { fmt.Fprintf(w, `{"Error":"unknown pool id"}`) } else { fmt.Fprintf(w, "null") } }) err := os.MkdirAll("/etc/docker/plugins", 0o755) assert.NilError(c, err) fileName := fmt.Sprintf("/etc/docker/plugins/%s.spec", netDrv) err = os.WriteFile(fileName, []byte(url), 0o644) assert.NilError(c, err) ipamFileName := fmt.Sprintf("/etc/docker/plugins/%s.spec", ipamDrv) err = os.WriteFile(ipamFileName, []byte(url), 0o644) assert.NilError(c, err) } func (s *DockerNetworkSuite) TearDownSuite(ctx context.Context, c *testing.T) { if s.server == nil { return } s.server.Close() err := os.RemoveAll("/etc/docker/plugins") assert.NilError(c, err) } func assertNwIsAvailable(c *testing.T, name string) { if !isNwPresent(c, name) { c.Fatalf("Network %s not found in network ls o/p", name) } } func assertNwNotAvailable(c *testing.T, name string) { if isNwPresent(c, name) { c.Fatalf("Found network %s in network ls o/p", name) } } func isNwPresent(c *testing.T, name string) bool { out := cli.DockerCmd(c, "network", "ls").Stdout() lines := strings.Split(out, "\n") for i := 1; i < len(lines)-1; i++ { netFields := strings.Fields(lines[i]) if netFields[1] == name { return true } } return false } // assertNwList checks network list retrieved with ls command // equals to expected network list // note: out should be `network ls [option]` result func assertNwList(c *testing.T, out string, expectNws []string) { lines := strings.Split(out, "\n") var nwList []string for _, line := range lines[1 : len(lines)-1] { netFields := strings.Fields(line) // wrap all network name in nwList nwList = append(nwList, netFields[1]) } // network ls should contains all expected networks assert.DeepEqual(c, nwList, expectNws) } func getNwResource(c *testing.T, name string) *types.NetworkResource { out := cli.DockerCmd(c, "network", "inspect", name).Stdout() var nr []types.NetworkResource err := json.Unmarshal([]byte(out), &nr) assert.NilError(c, err) return &nr[0] } func (s *DockerNetworkSuite) TestDockerNetworkLsDefault(c *testing.T) { defaults := []string{"bridge", "host", "none"} for _, nn := range defaults { assertNwIsAvailable(c, nn) } } func (s *DockerNetworkSuite) TestDockerNetworkCreatePredefined(c *testing.T) { predefined := []string{"bridge", "host", "none", "default"} for _, nw := range predefined { // predefined networks can't be created again out, _, err := dockerCmdWithError("network", "create", nw) assert.ErrorContains(c, err, "", out) } } func (s *DockerNetworkSuite) TestDockerNetworkCreateHostBind(c *testing.T) { cli.DockerCmd(c, "network", "create", "--subnet=192.168.10.0/24", "--gateway=192.168.10.1", "-o", "com.docker.network.bridge.host_binding_ipv4=192.168.10.1", "testbind") assertNwIsAvailable(c, "testbind") id := runSleepingContainer(c, "--net=testbind", "-p", "5000:5000") cli.WaitRun(c, id) out := cli.DockerCmd(c, "ps").Stdout() assert.Assert(c, strings.Contains(out, "192.168.10.1:5000->5000/tcp")) } func (s *DockerNetworkSuite) TestDockerNetworkRmPredefined(c *testing.T) { predefined := []string{"bridge", "host", "none", "default"} for _, nw := range predefined { // predefined networks can't be removed out, _, err := dockerCmdWithError("network", "rm", nw) assert.ErrorContains(c, err, "", out) } } func (s *DockerNetworkSuite) TestDockerNetworkLsFilter(c *testing.T) { testRequires(c, func() bool { return OnlyDefaultNetworks(testutil.GetContext(c)) }) testNet := "testnet1" testLabel := "foo" testValue := "bar" out := cli.DockerCmd(c, "network", "create", "dev").Stdout() defer func() { cli.DockerCmd(c, "network", "rm", "dev") cli.DockerCmd(c, "network", "rm", testNet) }() networkID := strings.TrimSpace(out) // filter with partial ID // only show 'dev' network out = cli.DockerCmd(c, "network", "ls", "-f", "id="+networkID[0:5]).Stdout() assertNwList(c, out, []string{"dev"}) out = cli.DockerCmd(c, "network", "ls", "-f", "name=dge").Stdout() assertNwList(c, out, []string{"bridge"}) // only show built-in network (bridge, none, host) out = cli.DockerCmd(c, "network", "ls", "-f", "type=builtin").Stdout() assertNwList(c, out, []string{"bridge", "host", "none"}) // only show custom networks (dev) out = cli.DockerCmd(c, "network", "ls", "-f", "type=custom").Stdout() assertNwList(c, out, []string{"dev"}) // show all networks with filter // it should be equivalent of ls without option out = cli.DockerCmd(c, "network", "ls", "-f", "type=custom", "-f", "type=builtin").Stdout() assertNwList(c, out, []string{"bridge", "dev", "host", "none"}) cli.DockerCmd(c, "network", "create", "--label", testLabel+"="+testValue, testNet) assertNwIsAvailable(c, testNet) out = cli.DockerCmd(c, "network", "ls", "-f", "label="+testLabel).Stdout() assertNwList(c, out, []string{testNet}) out = cli.DockerCmd(c, "network", "ls", "-f", "label="+testLabel+"="+testValue).Stdout() assertNwList(c, out, []string{testNet}) out = cli.DockerCmd(c, "network", "ls", "-f", "label=nonexistent").Stdout() outArr := strings.Split(strings.TrimSpace(out), "\n") assert.Equal(c, len(outArr), 1, fmt.Sprintf("%s\n", out)) out = cli.DockerCmd(c, "network", "ls", "-f", "driver=null").Stdout() assertNwList(c, out, []string{"none"}) out = cli.DockerCmd(c, "network", "ls", "-f", "driver=host").Stdout() assertNwList(c, out, []string{"host"}) out = cli.DockerCmd(c, "network", "ls", "-f", "driver=bridge").Stdout() assertNwList(c, out, []string{"bridge", "dev", testNet}) } func (s *DockerNetworkSuite) TestDockerNetworkCreateDelete(c *testing.T) { cli.DockerCmd(c, "network", "create", "test") assertNwIsAvailable(c, "test") cli.DockerCmd(c, "network", "rm", "test") assertNwNotAvailable(c, "test") } func (s *DockerNetworkSuite) TestDockerNetworkCreateLabel(c *testing.T) { testNet := "testnetcreatelabel" testLabel := "foo" testValue := "bar" cli.DockerCmd(c, "network", "create", "--label", testLabel+"="+testValue, testNet) assertNwIsAvailable(c, testNet) out, _, err := dockerCmdWithError("network", "inspect", "--format={{ .Labels."+testLabel+" }}", testNet) assert.NilError(c, err) assert.Equal(c, strings.TrimSpace(out), testValue) cli.DockerCmd(c, "network", "rm", testNet) assertNwNotAvailable(c, testNet) } func (s *DockerCLINetworkSuite) TestDockerNetworkDeleteNotExists(c *testing.T) { out, _, err := dockerCmdWithError("network", "rm", "test") assert.ErrorContains(c, err, "", out) } func (s *DockerCLINetworkSuite) TestDockerNetworkDeleteMultiple(c *testing.T) { cli.DockerCmd(c, "network", "create", "testDelMulti0") assertNwIsAvailable(c, "testDelMulti0") cli.DockerCmd(c, "network", "create", "testDelMulti1") assertNwIsAvailable(c, "testDelMulti1") cli.DockerCmd(c, "network", "create", "testDelMulti2") assertNwIsAvailable(c, "testDelMulti2") out := cli.DockerCmd(c, "run", "-d", "--net", "testDelMulti2", "busybox", "top").Stdout() containerID := strings.TrimSpace(out) cli.WaitRun(c, containerID) // delete three networks at the same time, since testDelMulti2 // contains active container, its deletion should fail. out, _, err := dockerCmdWithError("network", "rm", "testDelMulti0", "testDelMulti1", "testDelMulti2") // err should not be nil due to deleting testDelMulti2 failed. assert.Assert(c, err != nil, "out: %s", out) // testDelMulti2 should fail due to network has active endpoints assert.Assert(c, strings.Contains(out, "has active endpoints")) assertNwNotAvailable(c, "testDelMulti0") assertNwNotAvailable(c, "testDelMulti1") // testDelMulti2 can't be deleted, so it should exist assertNwIsAvailable(c, "testDelMulti2") } func (s *DockerCLINetworkSuite) TestDockerNetworkInspect(c *testing.T) { out := cli.DockerCmd(c, "network", "inspect", "host").Stdout() var networkResources []types.NetworkResource err := json.Unmarshal([]byte(out), &networkResources) assert.NilError(c, err) assert.Equal(c, len(networkResources), 1) out = cli.DockerCmd(c, "network", "inspect", "--format={{ .Name }}", "host").Stdout() assert.Equal(c, strings.TrimSpace(out), "host") } func (s *DockerCLINetworkSuite) TestDockerNetworkInspectWithID(c *testing.T) { out := cli.DockerCmd(c, "network", "create", "test2").Stdout() networkID := strings.TrimSpace(out) assertNwIsAvailable(c, "test2") out = cli.DockerCmd(c, "network", "inspect", "--format={{ .Id }}", "test2").Stdout() assert.Equal(c, strings.TrimSpace(out), networkID) out = cli.DockerCmd(c, "network", "inspect", "--format={{ .ID }}", "test2").Stdout() assert.Equal(c, strings.TrimSpace(out), networkID) } func (s *DockerCLINetworkSuite) TestDockerInspectMultipleNetwork(c *testing.T) { result := dockerCmdWithResult("network", "inspect", "host", "none") result.Assert(c, icmd.Success) var networkResources []types.NetworkResource err := json.Unmarshal([]byte(result.Stdout()), &networkResources) assert.NilError(c, err) assert.Equal(c, len(networkResources), 2) } func (s *DockerCLINetworkSuite) TestDockerInspectMultipleNetworksIncludingNonexistent(c *testing.T) { // non-existent network was not at the beginning of the inspect list // This should print an error, return an exitCode 1 and print the host network result := dockerCmdWithResult("network", "inspect", "host", "nonexistent") result.Assert(c, icmd.Expected{ ExitCode: 1, Err: "Error: No such network: nonexistent", Out: "host", }) var networkResources []types.NetworkResource err := json.Unmarshal([]byte(result.Stdout()), &networkResources) assert.NilError(c, err) assert.Equal(c, len(networkResources), 1) // Only one non-existent network to inspect // Should print an error and return an exitCode, nothing else result = dockerCmdWithResult("network", "inspect", "nonexistent") result.Assert(c, icmd.Expected{ ExitCode: 1, Err: "Error: No such network: nonexistent", Out: "[]", }) // non-existent network was at the beginning of the inspect list // Should not fail fast, and still print host network but print an error result = dockerCmdWithResult("network", "inspect", "nonexistent", "host") result.Assert(c, icmd.Expected{ ExitCode: 1, Err: "Error: No such network: nonexistent", Out: "host", }) networkResources = []types.NetworkResource{} err = json.Unmarshal([]byte(result.Stdout()), &networkResources) assert.NilError(c, err) assert.Equal(c, len(networkResources), 1) } func (s *DockerCLINetworkSuite) TestDockerInspectNetworkWithContainerName(c *testing.T) { cli.DockerCmd(c, "network", "create", "brNetForInspect") assertNwIsAvailable(c, "brNetForInspect") defer func() { cli.DockerCmd(c, "network", "rm", "brNetForInspect") assertNwNotAvailable(c, "brNetForInspect") }() out := cli.DockerCmd(c, "run", "-d", "--name", "testNetInspect1", "--net", "brNetForInspect", "busybox", "top").Stdout() cli.WaitRun(c, "testNetInspect1") containerID := strings.TrimSpace(out) defer func() { // we don't stop container by name, because we'll rename it later cli.DockerCmd(c, "stop", containerID) }() out = cli.DockerCmd(c, "network", "inspect", "brNetForInspect").Stdout() var networkResources []types.NetworkResource err := json.Unmarshal([]byte(out), &networkResources) assert.NilError(c, err) assert.Equal(c, len(networkResources), 1) container, ok := networkResources[0].Containers[containerID] assert.Assert(c, ok) assert.Equal(c, container.Name, "testNetInspect1") // rename container and check docker inspect output update newName := "HappyNewName" cli.DockerCmd(c, "rename", "testNetInspect1", newName) // check whether network inspect works properly out = cli.DockerCmd(c, "network", "inspect", "brNetForInspect").Stdout() var newNetRes []types.NetworkResource err = json.Unmarshal([]byte(out), &newNetRes) assert.NilError(c, err) assert.Equal(c, len(newNetRes), 1) container1, ok := newNetRes[0].Containers[containerID] assert.Assert(c, ok) assert.Equal(c, container1.Name, newName) } func (s *DockerNetworkSuite) TestDockerNetworkConnectDisconnect(c *testing.T) { cli.DockerCmd(c, "network", "create", "test") assertNwIsAvailable(c, "test") nr := getNwResource(c, "test") assert.Equal(c, nr.Name, "test") assert.Equal(c, len(nr.Containers), 0) // run a container out := cli.DockerCmd(c, "run", "-d", "--name", "test", "busybox", "top").Stdout() cli.WaitRun(c, "test") containerID := strings.TrimSpace(out) // connect the container to the test network cli.DockerCmd(c, "network", "connect", "test", containerID) // inspect the network to make sure container is connected nr = getNetworkResource(c, nr.ID) assert.Equal(c, len(nr.Containers), 1) // check if container IP matches network inspect ip, _, err := net.ParseCIDR(nr.Containers[containerID].IPv4Address) assert.NilError(c, err) containerIP := findContainerIP(c, "test", "test") assert.Equal(c, ip.String(), containerIP) // disconnect container from the network cli.DockerCmd(c, "network", "disconnect", "test", containerID) nr = getNwResource(c, "test") assert.Equal(c, nr.Name, "test") assert.Equal(c, len(nr.Containers), 0) // run another container out = cli.DockerCmd(c, "run", "-d", "--net", "test", "--name", "test2", "busybox", "top").Stdout() cli.WaitRun(c, "test2") containerID = strings.TrimSpace(out) nr = getNwResource(c, "test") assert.Equal(c, nr.Name, "test") assert.Equal(c, len(nr.Containers), 1) // force disconnect the container to the test network cli.DockerCmd(c, "network", "disconnect", "-f", "test", containerID) nr = getNwResource(c, "test") assert.Equal(c, nr.Name, "test") assert.Equal(c, len(nr.Containers), 0) cli.DockerCmd(c, "network", "rm", "test") assertNwNotAvailable(c, "test") } func (s *DockerNetworkSuite) TestDockerNetworkIPAMMultipleNetworks(c *testing.T) { testRequires(c, testEnv.IsLocalDaemon) // test0 bridge network cli.DockerCmd(c, "network", "create", "--subnet=192.168.0.0/16", "test1") assertNwIsAvailable(c, "test1") // test2 bridge network does not overlap cli.DockerCmd(c, "network", "create", "--subnet=192.169.0.0/16", "test2") assertNwIsAvailable(c, "test2") // for networks w/o ipam specified, docker will choose proper non-overlapping subnets cli.DockerCmd(c, "network", "create", "test3") assertNwIsAvailable(c, "test3") cli.DockerCmd(c, "network", "create", "test4") assertNwIsAvailable(c, "test4") cli.DockerCmd(c, "network", "create", "test5") assertNwIsAvailable(c, "test5") // test network with multiple subnets // bridge network doesn't support multiple subnets. hence, use a dummy driver that supports cli.DockerCmd(c, "network", "create", "-d", dummyNetworkDriver, "--subnet=192.170.0.0/16", "--subnet=192.171.0.0/16", "test6") assertNwIsAvailable(c, "test6") // test network with multiple subnets with valid ipam combinations // also check same subnet across networks when the driver supports it. cli.DockerCmd(c, "network", "create", "-d", dummyNetworkDriver, "--subnet=192.172.0.0/16", "--subnet=192.173.0.0/16", "--gateway=192.172.0.100", "--gateway=192.173.0.100", "--ip-range=192.172.1.0/24", "--aux-address", "a=192.172.1.5", "--aux-address", "b=192.172.1.6", "--aux-address", "c=192.173.1.5", "--aux-address", "d=192.173.1.6", "test7") assertNwIsAvailable(c, "test7") // cleanup for i := 1; i < 8; i++ { cli.DockerCmd(c, "network", "rm", fmt.Sprintf("test%d", i)) } } func (s *DockerNetworkSuite) TestDockerNetworkCustomIPAM(c *testing.T) { testRequires(c, testEnv.IsLocalDaemon) // Create a bridge network using custom ipam driver cli.DockerCmd(c, "network", "create", "--ipam-driver", dummyIPAMDriver, "br0") assertNwIsAvailable(c, "br0") // Verify expected network ipam fields are there nr := getNetworkResource(c, "br0") assert.Equal(c, nr.Driver, "bridge") assert.Equal(c, nr.IPAM.Driver, dummyIPAMDriver) // remove network and exercise remote ipam driver cli.DockerCmd(c, "network", "rm", "br0") assertNwNotAvailable(c, "br0") } func (s *DockerNetworkSuite) TestDockerNetworkIPAMOptions(c *testing.T) { testRequires(c, testEnv.IsLocalDaemon) // Create a bridge network using custom ipam driver and options cli.DockerCmd(c, "network", "create", "--ipam-driver", dummyIPAMDriver, "--ipam-opt", "opt1=drv1", "--ipam-opt", "opt2=drv2", "br0") assertNwIsAvailable(c, "br0") // Verify expected network ipam options nr := getNetworkResource(c, "br0") opts := nr.IPAM.Options assert.Equal(c, opts["opt1"], "drv1") assert.Equal(c, opts["opt2"], "drv2") } func (s *DockerNetworkSuite) TestDockerNetworkNullIPAMDriver(c *testing.T) { testRequires(c, testEnv.IsLocalDaemon) // Create a network with null ipam driver _, _, err := dockerCmdWithError("network", "create", "-d", dummyNetworkDriver, "--ipam-driver", "null", "test000") assert.NilError(c, err) assertNwIsAvailable(c, "test000") // Verify the inspect data contains the default subnet provided by the null // ipam driver and no gateway, as the null ipam driver does not provide one nr := getNetworkResource(c, "test000") assert.Equal(c, nr.IPAM.Driver, "null") assert.Equal(c, len(nr.IPAM.Config), 1) assert.Equal(c, nr.IPAM.Config[0].Subnet, "0.0.0.0/0") assert.Equal(c, nr.IPAM.Config[0].Gateway, "") } func (s *DockerNetworkSuite) TestDockerNetworkInspectDefault(c *testing.T) { nr := getNetworkResource(c, "none") assert.Equal(c, nr.Driver, "null") assert.Equal(c, nr.Scope, "local") assert.Equal(c, nr.Internal, false) assert.Equal(c, nr.EnableIPv6, false) assert.Equal(c, nr.IPAM.Driver, "default") assert.Equal(c, len(nr.IPAM.Config), 0) nr = getNetworkResource(c, "host") assert.Equal(c, nr.Driver, "host") assert.Equal(c, nr.Scope, "local") assert.Equal(c, nr.Internal, false) assert.Equal(c, nr.EnableIPv6, false) assert.Equal(c, nr.IPAM.Driver, "default") assert.Equal(c, len(nr.IPAM.Config), 0) nr = getNetworkResource(c, "bridge") assert.Equal(c, nr.Driver, "bridge") assert.Equal(c, nr.Scope, "local") assert.Equal(c, nr.Internal, false) assert.Equal(c, nr.EnableIPv6, false) assert.Equal(c, nr.IPAM.Driver, "default") assert.Equal(c, len(nr.IPAM.Config), 1) } func (s *DockerNetworkSuite) TestDockerNetworkInspectCustomUnspecified(c *testing.T) { // if unspecified, network subnet will be selected from inside preferred pool cli.DockerCmd(c, "network", "create", "test01") assertNwIsAvailable(c, "test01") nr := getNetworkResource(c, "test01") assert.Equal(c, nr.Driver, "bridge") assert.Equal(c, nr.Scope, "local") assert.Equal(c, nr.Internal, false) assert.Equal(c, nr.EnableIPv6, false) assert.Equal(c, nr.IPAM.Driver, "default") assert.Equal(c, len(nr.IPAM.Config), 1) cli.DockerCmd(c, "network", "rm", "test01") assertNwNotAvailable(c, "test01") } func (s *DockerNetworkSuite) TestDockerNetworkInspectCustomSpecified(c *testing.T) { cli.DockerCmd(c, "network", "create", "--driver=bridge", "--ipv6", "--subnet=fd80:24e2:f998:72d6::/64", "--subnet=172.28.0.0/16", "--ip-range=172.28.5.0/24", "--gateway=172.28.5.254", "br0") assertNwIsAvailable(c, "br0") nr := getNetworkResource(c, "br0") assert.Equal(c, nr.Driver, "bridge") assert.Equal(c, nr.Scope, "local") assert.Equal(c, nr.Internal, false) assert.Equal(c, nr.EnableIPv6, true) assert.Equal(c, nr.IPAM.Driver, "default") assert.Equal(c, len(nr.IPAM.Config), 2) assert.Equal(c, nr.IPAM.Config[0].Subnet, "172.28.0.0/16") assert.Equal(c, nr.IPAM.Config[0].IPRange, "172.28.5.0/24") assert.Equal(c, nr.IPAM.Config[0].Gateway, "172.28.5.254") assert.Equal(c, nr.Internal, false) cli.DockerCmd(c, "network", "rm", "br0") assertNwNotAvailable(c, "br0") } func (s *DockerNetworkSuite) TestDockerNetworkIPAMInvalidCombinations(c *testing.T) { // network with ip-range out of subnet range _, _, err := dockerCmdWithError("network", "create", "--subnet=192.168.0.0/16", "--ip-range=192.170.0.0/16", "test") assert.ErrorContains(c, err, "") // network with multiple gateways for a single subnet _, _, err = dockerCmdWithError("network", "create", "--subnet=192.168.0.0/16", "--gateway=192.168.0.1", "--gateway=192.168.0.2", "test") assert.ErrorContains(c, err, "") // Multiple overlapping subnets in the same network must fail _, _, err = dockerCmdWithError("network", "create", "--subnet=192.168.0.0/16", "--subnet=192.168.1.0/16", "test") assert.ErrorContains(c, err, "") // overlapping subnets across networks must fail // create a valid test0 network cli.DockerCmd(c, "network", "create", "--subnet=192.168.0.0/16", "test0") assertNwIsAvailable(c, "test0") // create an overlapping test1 network _, _, err = dockerCmdWithError("network", "create", "--subnet=192.168.128.0/17", "test1") assert.ErrorContains(c, err, "") cli.DockerCmd(c, "network", "rm", "test0") assertNwNotAvailable(c, "test0") } func (s *DockerNetworkSuite) TestDockerNetworkDriverOptions(c *testing.T) { testRequires(c, testEnv.IsLocalDaemon) cli.DockerCmd(c, "network", "create", "-d", dummyNetworkDriver, "-o", "opt1=drv1", "-o", "opt2=drv2", "testopt") assertNwIsAvailable(c, "testopt") gopts := remoteDriverNetworkRequest.Options[netlabel.GenericData] assert.Assert(c, gopts != nil) opts, ok := gopts.(map[string]interface{}) assert.Equal(c, ok, true) assert.Equal(c, opts["opt1"], "drv1") assert.Equal(c, opts["opt2"], "drv2") cli.DockerCmd(c, "network", "rm", "testopt") assertNwNotAvailable(c, "testopt") } func (s *DockerNetworkSuite) TestDockerPluginV2NetworkDriver(c *testing.T) { testRequires(c, DaemonIsLinux, IsAmd64, Network) var ( npName = "tiborvass/test-docker-netplugin" npTag = "latest" npNameWithTag = npName + ":" + npTag ) _, _, err := dockerCmdWithError("plugin", "install", "--grant-all-permissions", npNameWithTag) assert.NilError(c, err) out, _, err := dockerCmdWithError("plugin", "ls") assert.NilError(c, err) assert.Assert(c, strings.Contains(out, npName)) assert.Assert(c, strings.Contains(out, npTag)) assert.Assert(c, strings.Contains(out, "true")) cli.DockerCmd(c, "network", "create", "-d", npNameWithTag, "v2net") assertNwIsAvailable(c, "v2net") cli.DockerCmd(c, "network", "rm", "v2net") assertNwNotAvailable(c, "v2net") } func (s *DockerDaemonSuite) TestDockerNetworkNoDiscoveryDefaultBridgeNetwork(c *testing.T) { ctx := testutil.GetContext(c) // On default bridge network built-in service discovery should not happen hostsFile := "/etc/hosts" bridgeName := "external-bridge" bridgeIP := "192.169.255.254/24" createInterface(c, "bridge", bridgeName, bridgeIP) defer deleteInterface(c, bridgeName) s.d.StartWithBusybox(ctx, c, "--bridge", bridgeName) defer s.d.Restart(c) // run two containers and store first container's etc/hosts content out, err := s.d.Cmd("run", "-d", "busybox", "top") assert.NilError(c, err) cid1 := strings.TrimSpace(out) defer s.d.Cmd("stop", cid1) hosts, err := s.d.Cmd("exec", cid1, "cat", hostsFile) assert.NilError(c, err) out, err = s.d.Cmd("run", "-d", "--name", "container2", "busybox", "top") assert.NilError(c, err) cid2 := strings.TrimSpace(out) // verify first container's etc/hosts file has not changed after spawning the second named container hostsPost, err := s.d.Cmd("exec", cid1, "cat", hostsFile) assert.NilError(c, err) assert.Equal(c, hosts, hostsPost, fmt.Sprintf("Unexpected %s change on second container creation", hostsFile)) // stop container 2 and verify first container's etc/hosts has not changed _, err = s.d.Cmd("stop", cid2) assert.NilError(c, err) hostsPost, err = s.d.Cmd("exec", cid1, "cat", hostsFile) assert.NilError(c, err) assert.Equal(c, hosts, hostsPost, fmt.Sprintf("Unexpected %s change on second container creation", hostsFile)) // but discovery is on when connecting to non default bridge network network := "anotherbridge" out, err = s.d.Cmd("network", "create", network) assert.NilError(c, err, out) defer s.d.Cmd("network", "rm", network) out, err = s.d.Cmd("network", "connect", network, cid1) assert.NilError(c, err, out) hosts, err = s.d.Cmd("exec", cid1, "cat", hostsFile) assert.NilError(c, err) hostsPost, err = s.d.Cmd("exec", cid1, "cat", hostsFile) assert.NilError(c, err) assert.Equal(c, hosts, hostsPost, fmt.Sprintf("Unexpected %s change on second network connection", hostsFile)) } func (s *DockerNetworkSuite) TestDockerNetworkAnonymousEndpoint(c *testing.T) { hostsFile := "/etc/hosts" cstmBridgeNw := "custom-bridge-nw" cstmBridgeNw1 := "custom-bridge-nw1" cli.DockerCmd(c, "network", "create", "-d", "bridge", cstmBridgeNw) assertNwIsAvailable(c, cstmBridgeNw) // run two anonymous containers and store their etc/hosts content out := cli.DockerCmd(c, "run", "-d", "--net", cstmBridgeNw, "busybox", "top").Stdout() cid1 := strings.TrimSpace(out) hosts1 := readContainerFileWithExec(c, cid1, hostsFile) out = cli.DockerCmd(c, "run", "-d", "--net", cstmBridgeNw, "busybox", "top").Stdout() cid2 := strings.TrimSpace(out) // verify first container etc/hosts file has not changed hosts1post := readContainerFileWithExec(c, cid1, hostsFile) assert.Equal(c, string(hosts1), string(hosts1post), fmt.Sprintf("Unexpected %s change on anonymous container creation", hostsFile)) // Connect the 2nd container to a new network and verify the // first container /etc/hosts file still hasn't changed. cli.DockerCmd(c, "network", "create", "-d", "bridge", cstmBridgeNw1) assertNwIsAvailable(c, cstmBridgeNw1) cli.DockerCmd(c, "network", "connect", cstmBridgeNw1, cid2) hosts2 := readContainerFileWithExec(c, cid2, hostsFile) hosts1post = readContainerFileWithExec(c, cid1, hostsFile) assert.Equal(c, string(hosts1), string(hosts1post), fmt.Sprintf("Unexpected %s change on container connect", hostsFile)) // start a named container cName := "AnyName" out = cli.DockerCmd(c, "run", "-d", "--net", cstmBridgeNw, "--name", cName, "busybox", "top").Stdout() cid3 := strings.TrimSpace(out) // verify that container 1 and 2 can ping the named container cli.DockerCmd(c, "exec", cid1, "ping", "-c", "1", cName) cli.DockerCmd(c, "exec", cid2, "ping", "-c", "1", cName) // Stop named container and verify first two containers' etc/hosts file hasn't changed cli.DockerCmd(c, "stop", cid3) hosts1post = readContainerFileWithExec(c, cid1, hostsFile) assert.Equal(c, string(hosts1), string(hosts1post), fmt.Sprintf("Unexpected %s change on name container creation", hostsFile)) hosts2post := readContainerFileWithExec(c, cid2, hostsFile) assert.Equal(c, string(hosts2), string(hosts2post), fmt.Sprintf("Unexpected %s change on name container creation", hostsFile)) // verify that container 1 and 2 can't ping the named container now _, _, err := dockerCmdWithError("exec", cid1, "ping", "-c", "1", cName) assert.ErrorContains(c, err, "") _, _, err = dockerCmdWithError("exec", cid2, "ping", "-c", "1", cName) assert.ErrorContains(c, err, "") } func (s *DockerNetworkSuite) TestDockerNetworkLinkOnDefaultNetworkOnly(c *testing.T) { // Legacy Link feature must work only on default network, and not across networks cnt1 := "container1" cnt2 := "container2" network := "anotherbridge" // Run first container on default network cli.DockerCmd(c, "run", "-d", "--name", cnt1, "busybox", "top") // Create another network and run the second container on it cli.DockerCmd(c, "network", "create", network) assertNwIsAvailable(c, network) cli.DockerCmd(c, "run", "-d", "--net", network, "--name", cnt2, "busybox", "top") // Try launching a container on default network, linking to the first container. Must succeed cli.DockerCmd(c, "run", "-d", "--link", fmt.Sprintf("%s:%s", cnt1, cnt1), "busybox", "top") // Try launching a container on default network, linking to the second container. Must fail _, _, err := dockerCmdWithError("run", "-d", "--link", fmt.Sprintf("%s:%s", cnt2, cnt2), "busybox", "top") assert.ErrorContains(c, err, "") // Connect second container to default network. Now a container on default network can link to it cli.DockerCmd(c, "network", "connect", "bridge", cnt2) cli.DockerCmd(c, "run", "-d", "--link", fmt.Sprintf("%s:%s", cnt2, cnt2), "busybox", "top") } func (s *DockerNetworkSuite) TestDockerNetworkOverlayPortMapping(c *testing.T) { testRequires(c, testEnv.IsLocalDaemon) // Verify exposed ports are present in ps output when running a container on // a network managed by a driver which does not provide the default gateway // for the container nwn := "ov" ctn := "bb" port1 := 80 port2 := 443 expose1 := fmt.Sprintf("--expose=%d", port1) expose2 := fmt.Sprintf("--expose=%d", port2) cli.DockerCmd(c, "network", "create", "-d", dummyNetworkDriver, nwn) assertNwIsAvailable(c, nwn) cli.DockerCmd(c, "run", "-d", "--net", nwn, "--name", ctn, expose1, expose2, "busybox", "top") // Check docker ps o/p for last created container reports the unpublished ports unpPort1 := fmt.Sprintf("%d/tcp", port1) unpPort2 := fmt.Sprintf("%d/tcp", port2) out := cli.DockerCmd(c, "ps", "-n=1").Stdout() // Missing unpublished ports in docker ps output assert.Assert(c, strings.Contains(out, unpPort1)) // Missing unpublished ports in docker ps output assert.Assert(c, strings.Contains(out, unpPort2)) } func (s *DockerNetworkSuite) TestDockerNetworkDriverUngracefulRestart(c *testing.T) { testRequires(c, DaemonIsLinux, NotUserNamespace, testEnv.IsLocalDaemon) ctx := testutil.GetContext(c) dnd := "dnd" did := "did" mux := http.NewServeMux() server := httptest.NewServer(mux) setupRemoteNetworkDrivers(c, mux, server.URL, dnd, did) s.d.StartWithBusybox(ctx, c) _, err := s.d.Cmd("network", "create", "-d", dnd, "--subnet", "1.1.1.0/24", "net1") assert.NilError(c, err) _, err = s.d.Cmd("run", "-d", "--net", "net1", "--name", "foo", "--ip", "1.1.1.10", "busybox", "top") assert.NilError(c, err) // Kill daemon and restart assert.Assert(c, s.d.Kill() == nil) server.Close() startTime := time.Now().Unix() s.d.Restart(c) lapse := time.Now().Unix() - startTime if lapse > 60 { // In normal scenarios, daemon restart takes ~1 second. // Plugin retry mechanism can delay the daemon start. systemd may not like it. // Avoid accessing plugins during daemon bootup c.Logf("daemon restart took too long : %d seconds", lapse) } // Restart the custom dummy plugin mux = http.NewServeMux() server = httptest.NewServer(mux) setupRemoteNetworkDrivers(c, mux, server.URL, dnd, did) // trying to reuse the same ip must succeed _, err = s.d.Cmd("run", "-d", "--net", "net1", "--name", "bar", "--ip", "1.1.1.10", "busybox", "top") assert.NilError(c, err) } func (s *DockerNetworkSuite) TestDockerNetworkMacInspect(c *testing.T) { testRequires(c, testEnv.IsLocalDaemon) // Verify endpoint MAC address is correctly populated in container's network settings nwn := "ov" ctn := "bb" cli.DockerCmd(c, "network", "create", "-d", dummyNetworkDriver, nwn) assertNwIsAvailable(c, nwn) cli.DockerCmd(c, "run", "-d", "--net", nwn, "--name", ctn, "busybox", "top") mac := inspectField(c, ctn, "NetworkSettings.Networks."+nwn+".MacAddress") assert.Equal(c, mac, "a0:b1:c2:d3:e4:f5") } func (s *DockerCLINetworkSuite) TestInspectAPIMultipleNetworks(c *testing.T) { cli.DockerCmd(c, "network", "create", "mybridge1") cli.DockerCmd(c, "network", "create", "mybridge2") out := cli.DockerCmd(c, "run", "-d", "busybox", "top").Stdout() id := strings.TrimSpace(out) cli.WaitRun(c, id) cli.DockerCmd(c, "network", "connect", "mybridge1", id) cli.DockerCmd(c, "network", "connect", "mybridge2", id) body := getInspectBody(c, "v1.20", id) var inspect120 v1p20.ContainerJSON err := json.Unmarshal(body, &inspect120) assert.NilError(c, err) versionedIP := inspect120.NetworkSettings.IPAddress body = getInspectBody(c, "v1.21", id) var inspect121 types.ContainerJSON err = json.Unmarshal(body, &inspect121) assert.NilError(c, err) assert.Equal(c, len(inspect121.NetworkSettings.Networks), 3) bridge := inspect121.NetworkSettings.Networks["bridge"] assert.Equal(c, bridge.IPAddress, versionedIP) assert.Equal(c, bridge.IPAddress, inspect121.NetworkSettings.IPAddress) } func connectContainerToNetworks(c *testing.T, d *daemon.Daemon, cName string, nws []string) { // Run a container on the default network out, err := d.Cmd("run", "-d", "--name", cName, "busybox", "top") assert.NilError(c, err, out) // Attach the container to other networks for _, nw := range nws { out, err = d.Cmd("network", "create", nw) assert.NilError(c, err, out) out, err = d.Cmd("network", "connect", nw, cName) assert.NilError(c, err, out) } } func verifyContainerIsConnectedToNetworks(c *testing.T, d *daemon.Daemon, cName string, nws []string) { // Verify container is connected to all the networks for _, nw := range nws { out, err := d.Cmd("inspect", "-f", fmt.Sprintf("{{.NetworkSettings.Networks.%s}}", nw), cName) assert.NilError(c, err, out) assert.Assert(c, out != "\n") } } func (s *DockerNetworkSuite) TestDockerNetworkMultipleNetworksGracefulDaemonRestart(c *testing.T) { testRequires(c, testEnv.IsLocalDaemon) ctx := testutil.GetContext(c) cName := "bb" nwList := []string{"nw1", "nw2", "nw3"} s.d.StartWithBusybox(ctx, c) connectContainerToNetworks(c, s.d, cName, nwList) verifyContainerIsConnectedToNetworks(c, s.d, cName, nwList) // Reload daemon s.d.Restart(c) _, err := s.d.Cmd("start", cName) assert.NilError(c, err) verifyContainerIsConnectedToNetworks(c, s.d, cName, nwList) } func (s *DockerNetworkSuite) TestDockerNetworkMultipleNetworksUngracefulDaemonRestart(c *testing.T) { testRequires(c, testEnv.IsLocalDaemon) ctx := testutil.GetContext(c) cName := "cc" nwList := []string{"nw1", "nw2", "nw3"} s.d.StartWithBusybox(ctx, c) connectContainerToNetworks(c, s.d, cName, nwList) verifyContainerIsConnectedToNetworks(c, s.d, cName, nwList) // Kill daemon and restart assert.Assert(c, s.d.Kill() == nil) s.d.Restart(c) // Restart container _, err := s.d.Cmd("start", cName) assert.NilError(c, err) verifyContainerIsConnectedToNetworks(c, s.d, cName, nwList) } func (s *DockerNetworkSuite) TestDockerNetworkRunNetByID(c *testing.T) { out := cli.DockerCmd(c, "network", "create", "one").Stdout() containerOut, _, err := dockerCmdWithError("run", "-d", "--net", strings.TrimSpace(out), "busybox", "top") assert.Assert(c, err == nil, containerOut) } func (s *DockerNetworkSuite) TestDockerNetworkHostModeUngracefulDaemonRestart(c *testing.T) { testRequires(c, DaemonIsLinux, NotUserNamespace, testEnv.IsLocalDaemon) ctx := testutil.GetContext(c) s.d.StartWithBusybox(ctx, c) // Run a few containers on host network for i := 0; i < 10; i++ { cName := fmt.Sprintf("hostc-%d", i) out, err := s.d.Cmd("run", "-d", "--name", cName, "--net=host", "--restart=always", "busybox", "top") assert.NilError(c, err, out) // verify container has finished starting before killing daemon err = s.d.WaitRun(cName) assert.NilError(c, err) } // Kill daemon ungracefully and restart assert.Assert(c, s.d.Kill() == nil) s.d.Restart(c) // make sure all the containers are up and running for i := 0; i < 10; i++ { err := s.d.WaitRun(fmt.Sprintf("hostc-%d", i)) assert.NilError(c, err) } } func (s *DockerNetworkSuite) TestDockerNetworkConnectToHostFromOtherNetwork(c *testing.T) { cli.DockerCmd(c, "run", "-d", "--name", "container1", "busybox", "top") cli.WaitRun(c, "container1") cli.DockerCmd(c, "network", "disconnect", "bridge", "container1") out, _, err := dockerCmdWithError("network", "connect", "host", "container1") assert.ErrorContains(c, err, "", out) assert.Assert(c, strings.Contains(out, runconfig.ErrConflictHostNetwork.Error())) } func (s *DockerNetworkSuite) TestDockerNetworkDisconnectFromHost(c *testing.T) { cli.DockerCmd(c, "run", "-d", "--name", "container1", "--net=host", "busybox", "top") cli.WaitRun(c, "container1") out, _, err := dockerCmdWithError("network", "disconnect", "host", "container1") assert.Assert(c, err != nil, "Should err out disconnect from host") assert.Assert(c, strings.Contains(out, runconfig.ErrConflictHostNetwork.Error())) } func (s *DockerNetworkSuite) TestDockerNetworkConnectWithPortMapping(c *testing.T) { cli.DockerCmd(c, "network", "create", "test1") cli.DockerCmd(c, "run", "-d", "--name", "c1", "-p", "5000:5000", "busybox", "top") cli.WaitRun(c, "c1") cli.DockerCmd(c, "network", "connect", "test1", "c1") } func verifyPortMap(c *testing.T, container, port, originalMapping string, mustBeEqual bool) { currentMapping := cli.DockerCmd(c, "port", container, port).Stdout() if mustBeEqual { assert.Equal(c, currentMapping, originalMapping) } else { assert.Assert(c, currentMapping != originalMapping) } } func (s *DockerNetworkSuite) TestDockerNetworkConnectDisconnectWithPortMapping(c *testing.T) { // Connect and disconnect a container with explicit and non-explicit // host port mapping to/from networks which do cause and do not cause // the container default gateway to change, and verify docker port cmd // returns congruent information cnt := "c1" cli.DockerCmd(c, "network", "create", "aaa") cli.DockerCmd(c, "network", "create", "ccc") cli.DockerCmd(c, "run", "-d", "--name", cnt, "-p", "9000:90", "-p", "70", "busybox", "top") cli.WaitRun(c, cnt) curPortMap := cli.DockerCmd(c, "port", cnt, "70").Stdout() curExplPortMap := cli.DockerCmd(c, "port", cnt, "90").Stdout() // Connect to a network which causes the container's default gw switch cli.DockerCmd(c, "network", "connect", "aaa", cnt) verifyPortMap(c, cnt, "70", curPortMap, false) verifyPortMap(c, cnt, "90", curExplPortMap, true) // Read current mapping curPortMap = cli.DockerCmd(c, "port", cnt, "70").Stdout() // Disconnect from a network which causes the container's default gw switch cli.DockerCmd(c, "network", "disconnect", "aaa", cnt) verifyPortMap(c, cnt, "70", curPortMap, false) verifyPortMap(c, cnt, "90", curExplPortMap, true) // Read current mapping curPortMap = cli.DockerCmd(c, "port", cnt, "70").Stdout() // Connect to a network which does not cause the container's default gw switch cli.DockerCmd(c, "network", "connect", "ccc", cnt) verifyPortMap(c, cnt, "70", curPortMap, true) verifyPortMap(c, cnt, "90", curExplPortMap, true) } func (s *DockerNetworkSuite) TestDockerNetworkConnectWithMac(c *testing.T) { macAddress := "02:42:ac:11:00:02" cli.DockerCmd(c, "network", "create", "mynetwork") cli.DockerCmd(c, "run", "--name=test", "-d", "--mac-address", macAddress, "busybox", "top") cli.WaitRun(c, "test") mac1 := inspectField(c, "test", "NetworkSettings.Networks.bridge.MacAddress") assert.Equal(c, strings.TrimSpace(mac1), macAddress) cli.DockerCmd(c, "network", "connect", "mynetwork", "test") mac2 := inspectField(c, "test", "NetworkSettings.Networks.mynetwork.MacAddress") assert.Assert(c, strings.TrimSpace(mac2) != strings.TrimSpace(mac1)) } func (s *DockerNetworkSuite) TestDockerNetworkInspectCreatedContainer(c *testing.T) { cli.DockerCmd(c, "create", "--name", "test", "busybox") networks := inspectField(c, "test", "NetworkSettings.Networks") assert.Assert(c, strings.Contains(networks, "bridge"), "Should return 'bridge' network") } func (s *DockerNetworkSuite) TestDockerNetworkRestartWithMultipleNetworks(c *testing.T) { cli.DockerCmd(c, "network", "create", "test") cli.DockerCmd(c, "run", "--name=foo", "-d", "busybox", "top") cli.WaitRun(c, "foo") cli.DockerCmd(c, "network", "connect", "test", "foo") cli.DockerCmd(c, "restart", "foo") networks := inspectField(c, "foo", "NetworkSettings.Networks") assert.Assert(c, strings.Contains(networks, "bridge"), "Should contain 'bridge' network") assert.Assert(c, strings.Contains(networks, "test"), "Should contain 'test' network") } func (s *DockerNetworkSuite) TestDockerNetworkConnectDisconnectToStoppedContainer(c *testing.T) { testRequires(c, testEnv.IsLocalDaemon) cli.DockerCmd(c, "network", "create", "test") cli.DockerCmd(c, "create", "--name=foo", "busybox", "top") cli.DockerCmd(c, "network", "connect", "test", "foo") networks := inspectField(c, "foo", "NetworkSettings.Networks") assert.Assert(c, strings.Contains(networks, "test"), "Should contain 'test' network") // Restart docker daemon to test the config has persisted to disk s.d.Restart(c) networks = inspectField(c, "foo", "NetworkSettings.Networks") assert.Assert(c, strings.Contains(networks, "test"), "Should contain 'test' network") // start the container and test if we can ping it from another container in the same network cli.DockerCmd(c, "start", "foo") cli.WaitRun(c, "foo") ip := inspectField(c, "foo", "NetworkSettings.Networks.test.IPAddress") ip = strings.TrimSpace(ip) cli.DockerCmd(c, "run", "--net=test", "busybox", "sh", "-c", fmt.Sprintf("ping -c 1 %s", ip)) cli.DockerCmd(c, "stop", "foo") // Test disconnect cli.DockerCmd(c, "network", "disconnect", "test", "foo") networks = inspectField(c, "foo", "NetworkSettings.Networks") assert.Assert(c, !strings.Contains(networks, "test"), "Should not contain 'test' network") // Restart docker daemon to test the config has persisted to disk s.d.Restart(c) networks = inspectField(c, "foo", "NetworkSettings.Networks") assert.Assert(c, !strings.Contains(networks, "test"), "Should not contain 'test' network") } func (s *DockerNetworkSuite) TestDockerNetworkDisconnectContainerNonexistingNetwork(c *testing.T) { cli.DockerCmd(c, "network", "create", "test") cli.DockerCmd(c, "run", "--net=test", "-d", "--name=foo", "busybox", "top") networks := inspectField(c, "foo", "NetworkSettings.Networks") assert.Assert(c, strings.Contains(networks, "test"), "Should contain 'test' network") // Stop container and remove network cli.DockerCmd(c, "stop", "foo") cli.DockerCmd(c, "network", "rm", "test") // Test disconnecting stopped container from nonexisting network cli.DockerCmd(c, "network", "disconnect", "-f", "test", "foo") networks = inspectField(c, "foo", "NetworkSettings.Networks") assert.Assert(c, !strings.Contains(networks, "test"), "Should not contain 'test' network") } func (s *DockerNetworkSuite) TestDockerNetworkConnectPreferredIP(c *testing.T) { // create two networks cli.DockerCmd(c, "network", "create", "--ipv6", "--subnet=172.28.0.0/16", "--subnet=2001:db8:1234::/64", "n0") assertNwIsAvailable(c, "n0") cli.DockerCmd(c, "network", "create", "--ipv6", "--subnet=172.30.0.0/16", "--ip-range=172.30.5.0/24", "--subnet=2001:db8:abcd::/64", "--ip-range=2001:db8:abcd::/80", "n1") assertNwIsAvailable(c, "n1") // run a container on first network specifying the ip addresses cli.DockerCmd(c, "run", "-d", "--name", "c0", "--net=n0", "--ip", "172.28.99.88", "--ip6", "2001:db8:1234::9988", "busybox", "top") cli.WaitRun(c, "c0") verifyIPAddressConfig(c, "c0", "n0", "172.28.99.88", "2001:db8:1234::9988") verifyIPAddresses(c, "c0", "n0", "172.28.99.88", "2001:db8:1234::9988") // connect the container to the second network specifying an ip addresses cli.DockerCmd(c, "network", "connect", "--ip", "172.30.5.44", "--ip6", "2001:db8:abcd::5544", "n1", "c0") verifyIPAddressConfig(c, "c0", "n1", "172.30.5.44", "2001:db8:abcd::5544") verifyIPAddresses(c, "c0", "n1", "172.30.5.44", "2001:db8:abcd::5544") // Stop and restart the container cli.DockerCmd(c, "stop", "c0") cli.DockerCmd(c, "start", "c0") // verify requested addresses are applied and configs are still there verifyIPAddressConfig(c, "c0", "n0", "172.28.99.88", "2001:db8:1234::9988") verifyIPAddresses(c, "c0", "n0", "172.28.99.88", "2001:db8:1234::9988") verifyIPAddressConfig(c, "c0", "n1", "172.30.5.44", "2001:db8:abcd::5544") verifyIPAddresses(c, "c0", "n1", "172.30.5.44", "2001:db8:abcd::5544") // Still it should fail to connect to the default network with a specified IP (whatever ip) out, _, err := dockerCmdWithError("network", "connect", "--ip", "172.21.55.44", "bridge", "c0") assert.Assert(c, err != nil, "out: %s", out) assert.Assert(c, strings.Contains(out, runconfig.ErrUnsupportedNetworkAndIP.Error())) } func (s *DockerNetworkSuite) TestDockerNetworkConnectPreferredIPStoppedContainer(c *testing.T) { // create a container cli.DockerCmd(c, "create", "--name", "c0", "busybox", "top") // create a network cli.DockerCmd(c, "network", "create", "--ipv6", "--subnet=172.30.0.0/16", "--subnet=2001:db8:abcd::/64", "n0") assertNwIsAvailable(c, "n0") // connect the container to the network specifying an ip addresses cli.DockerCmd(c, "network", "connect", "--ip", "172.30.55.44", "--ip6", "2001:db8:abcd::5544", "n0", "c0") verifyIPAddressConfig(c, "c0", "n0", "172.30.55.44", "2001:db8:abcd::5544") // start the container, verify config has not changed and ip addresses are assigned cli.DockerCmd(c, "start", "c0") cli.WaitRun(c, "c0") verifyIPAddressConfig(c, "c0", "n0", "172.30.55.44", "2001:db8:abcd::5544") verifyIPAddresses(c, "c0", "n0", "172.30.55.44", "2001:db8:abcd::5544") // stop the container and check ip config has not changed cli.DockerCmd(c, "stop", "c0") verifyIPAddressConfig(c, "c0", "n0", "172.30.55.44", "2001:db8:abcd::5544") } func (s *DockerNetworkSuite) TestDockerNetworkUnsupportedRequiredIP(c *testing.T) { // requested IP is not supported on predefined networks for _, mode := range []string{"none", "host", "bridge", "default"} { checkUnsupportedNetworkAndIP(c, mode) } // requested IP is not supported on networks with no user defined subnets cli.DockerCmd(c, "network", "create", "n0") assertNwIsAvailable(c, "n0") out, _, err := dockerCmdWithError("run", "-d", "--ip", "172.28.99.88", "--net", "n0", "busybox", "top") assert.Assert(c, err != nil, "out: %s", out) assert.Assert(c, strings.Contains(out, runconfig.ErrUnsupportedNetworkNoSubnetAndIP.Error())) out, _, err = dockerCmdWithError("run", "-d", "--ip6", "2001:db8:1234::9988", "--net", "n0", "busybox", "top") assert.Assert(c, err != nil, "out: %s", out) assert.Assert(c, strings.Contains(out, runconfig.ErrUnsupportedNetworkNoSubnetAndIP.Error())) cli.DockerCmd(c, "network", "rm", "n0") assertNwNotAvailable(c, "n0") } func checkUnsupportedNetworkAndIP(c *testing.T, nwMode string) { out, _, err := dockerCmdWithError("run", "-d", "--net", nwMode, "--ip", "172.28.99.88", "--ip6", "2001:db8:1234::9988", "busybox", "top") assert.Assert(c, err != nil, "out: %s", out) assert.Assert(c, strings.Contains(out, runconfig.ErrUnsupportedNetworkAndIP.Error())) } func verifyIPAddressConfig(c *testing.T, cName, nwname, ipv4, ipv6 string) { if ipv4 != "" { out := inspectField(c, cName, fmt.Sprintf("NetworkSettings.Networks.%s.IPAMConfig.IPv4Address", nwname)) assert.Equal(c, strings.TrimSpace(out), ipv4) } if ipv6 != "" { out := inspectField(c, cName, fmt.Sprintf("NetworkSettings.Networks.%s.IPAMConfig.IPv6Address", nwname)) assert.Equal(c, strings.TrimSpace(out), ipv6) } } func verifyIPAddresses(c *testing.T, cName, nwname, ipv4, ipv6 string) { out := inspectField(c, cName, fmt.Sprintf("NetworkSettings.Networks.%s.IPAddress", nwname)) assert.Equal(c, strings.TrimSpace(out), ipv4) out = inspectField(c, cName, fmt.Sprintf("NetworkSettings.Networks.%s.GlobalIPv6Address", nwname)) assert.Equal(c, strings.TrimSpace(out), ipv6) } func (s *DockerNetworkSuite) TestDockerNetworkConnectLinkLocalIP(c *testing.T) { // create one test network cli.DockerCmd(c, "network", "create", "--ipv6", "--subnet=2001:db8:1234::/64", "n0") assertNwIsAvailable(c, "n0") // run a container with incorrect link-local address _, _, err := dockerCmdWithError("run", "--link-local-ip", "169.253.5.5", "busybox", "true") assert.ErrorContains(c, err, "") _, _, err = dockerCmdWithError("run", "--link-local-ip", "2001:db8::89", "busybox", "true") assert.ErrorContains(c, err, "") // run two containers with link-local ip on the test network cli.DockerCmd(c, "run", "-d", "--name", "c0", "--net=n0", "--link-local-ip", "169.254.7.7", "--link-local-ip", "fe80::254:77", "busybox", "top") cli.WaitRun(c, "c0") cli.DockerCmd(c, "run", "-d", "--name", "c1", "--net=n0", "--link-local-ip", "169.254.8.8", "--link-local-ip", "fe80::254:88", "busybox", "top") cli.WaitRun(c, "c1") // run a container on the default network and connect it to the test network specifying a link-local address cli.DockerCmd(c, "run", "-d", "--name", "c2", "busybox", "top") cli.WaitRun(c, "c2") cli.DockerCmd(c, "network", "connect", "--link-local-ip", "169.254.9.9", "n0", "c2") // verify the three containers can ping each other via the link-local addresses _, _, err = dockerCmdWithError("exec", "c0", "ping", "-c", "1", "169.254.8.8") assert.NilError(c, err) _, _, err = dockerCmdWithError("exec", "c1", "ping", "-c", "1", "169.254.9.9") assert.NilError(c, err) _, _, err = dockerCmdWithError("exec", "c2", "ping", "-c", "1", "169.254.7.7") assert.NilError(c, err) // Stop and restart the three containers cli.DockerCmd(c, "stop", "c0") cli.DockerCmd(c, "stop", "c1") cli.DockerCmd(c, "stop", "c2") cli.DockerCmd(c, "start", "c0") cli.DockerCmd(c, "start", "c1") cli.DockerCmd(c, "start", "c2") // verify the ping again _, _, err = dockerCmdWithError("exec", "c0", "ping", "-c", "1", "169.254.8.8") assert.NilError(c, err) _, _, err = dockerCmdWithError("exec", "c1", "ping", "-c", "1", "169.254.9.9") assert.NilError(c, err) _, _, err = dockerCmdWithError("exec", "c2", "ping", "-c", "1", "169.254.7.7") assert.NilError(c, err) } func (s *DockerCLINetworkSuite) TestUserDefinedNetworkConnectDisconnectLink(c *testing.T) { testRequires(c, DaemonIsLinux, NotUserNamespace) cli.DockerCmd(c, "network", "create", "-d", "bridge", "foo1") cli.DockerCmd(c, "network", "create", "-d", "bridge", "foo2") cli.DockerCmd(c, "run", "-d", "--net=foo1", "--name=first", "busybox", "top") cli.WaitRun(c, "first") // run a container in a user-defined network with a link for an existing container // and a link for a container that doesn't exist cli.DockerCmd(c, "run", "-d", "--net=foo1", "--name=second", "--link=first:FirstInFoo1", "--link=third:bar", "busybox", "top") cli.WaitRun(c, "second") // ping to first and its alias FirstInFoo1 must succeed _, _, err := dockerCmdWithError("exec", "second", "ping", "-c", "1", "first") assert.NilError(c, err) _, _, err = dockerCmdWithError("exec", "second", "ping", "-c", "1", "FirstInFoo1") assert.NilError(c, err) // connect first container to foo2 network cli.DockerCmd(c, "network", "connect", "foo2", "first") // connect second container to foo2 network with a different alias for first container cli.DockerCmd(c, "network", "connect", "--link=first:FirstInFoo2", "foo2", "second") // ping the new alias in network foo2 _, _, err = dockerCmdWithError("exec", "second", "ping", "-c", "1", "FirstInFoo2") assert.NilError(c, err) // disconnect first container from foo1 network cli.DockerCmd(c, "network", "disconnect", "foo1", "first") // link in foo1 network must fail _, _, err = dockerCmdWithError("exec", "second", "ping", "-c", "1", "FirstInFoo1") assert.ErrorContains(c, err, "") // link in foo2 network must succeed _, _, err = dockerCmdWithError("exec", "second", "ping", "-c", "1", "FirstInFoo2") assert.NilError(c, err) } func (s *DockerNetworkSuite) TestDockerNetworkDisconnectDefault(c *testing.T) { netWorkName1 := "test1" netWorkName2 := "test2" containerName := "foo" cli.DockerCmd(c, "network", "create", netWorkName1) cli.DockerCmd(c, "network", "create", netWorkName2) cli.DockerCmd(c, "create", "--name", containerName, "busybox", "top") cli.DockerCmd(c, "network", "connect", netWorkName1, containerName) cli.DockerCmd(c, "network", "connect", netWorkName2, containerName) cli.DockerCmd(c, "network", "disconnect", "bridge", containerName) cli.DockerCmd(c, "start", containerName) cli.WaitRun(c, containerName) networks := inspectField(c, containerName, "NetworkSettings.Networks") assert.Assert(c, strings.Contains(networks, netWorkName1), fmt.Sprintf("Should contain '%s' network", netWorkName1)) assert.Assert(c, strings.Contains(networks, netWorkName2), fmt.Sprintf("Should contain '%s' network", netWorkName2)) assert.Assert(c, !strings.Contains(networks, "bridge"), "Should not contain 'bridge' network") } func (s *DockerNetworkSuite) TestDockerNetworkConnectWithAliasOnDefaultNetworks(c *testing.T) { testRequires(c, DaemonIsLinux, NotUserNamespace) defaults := []string{"bridge", "host", "none"} out := cli.DockerCmd(c, "run", "-d", "--net=none", "busybox", "top").Stdout() containerID := strings.TrimSpace(out) for _, nw := range defaults { res, _, err := dockerCmdWithError("network", "connect", "--alias", "alias"+nw, nw, containerID) assert.ErrorContains(c, err, "") assert.Assert(c, strings.Contains(res, runconfig.ErrUnsupportedNetworkAndAlias.Error())) } } func (s *DockerCLINetworkSuite) TestUserDefinedNetworkConnectDisconnectAlias(c *testing.T) { testRequires(c, DaemonIsLinux, NotUserNamespace) cli.DockerCmd(c, "network", "create", "-d", "bridge", "net1") cli.DockerCmd(c, "network", "create", "-d", "bridge", "net2") cid := cli.DockerCmd(c, "run", "-d", "--net=net1", "--name=first", "--net-alias=foo", "busybox:glibc", "top").Stdout() cli.WaitRun(c, "first") cli.DockerCmd(c, "run", "-d", "--net=net1", "--name=second", "busybox:glibc", "top") cli.WaitRun(c, "second") // ping first container and its alias _, _, err := dockerCmdWithError("exec", "second", "ping", "-c", "1", "first") assert.NilError(c, err) _, _, err = dockerCmdWithError("exec", "second", "ping", "-c", "1", "foo") assert.NilError(c, err) // ping first container's short-id alias _, _, err = dockerCmdWithError("exec", "second", "ping", "-c", "1", stringid.TruncateID(cid)) assert.NilError(c, err) // connect first container to net2 network cli.DockerCmd(c, "network", "connect", "--alias=bar", "net2", "first") // connect second container to foo2 network with a different alias for first container cli.DockerCmd(c, "network", "connect", "net2", "second") // ping the new alias in network foo2 _, _, err = dockerCmdWithError("exec", "second", "ping", "-c", "1", "bar") assert.NilError(c, err) // disconnect first container from net1 network cli.DockerCmd(c, "network", "disconnect", "net1", "first") // ping to net1 scoped alias "foo" must fail _, _, err = dockerCmdWithError("exec", "second", "ping", "-c", "1", "foo") assert.ErrorContains(c, err, "") // ping to net2 scoped alias "bar" must still succeed _, _, err = dockerCmdWithError("exec", "second", "ping", "-c", "1", "bar") assert.NilError(c, err) // ping to net2 scoped alias short-id must still succeed _, _, err = dockerCmdWithError("exec", "second", "ping", "-c", "1", stringid.TruncateID(cid)) assert.NilError(c, err) // verify the alias option is rejected when running on predefined network out, _, err := dockerCmdWithError("run", "--rm", "--name=any", "--net-alias=any", "busybox:glibc", "true") assert.Assert(c, err != nil, "out: %s", out) assert.Assert(c, strings.Contains(out, runconfig.ErrUnsupportedNetworkAndAlias.Error())) // verify the alias option is rejected when connecting to predefined network out, _, err = dockerCmdWithError("network", "connect", "--alias=any", "bridge", "first") assert.Assert(c, err != nil, "out: %s", out) assert.Assert(c, strings.Contains(out, runconfig.ErrUnsupportedNetworkAndAlias.Error())) } func (s *DockerCLINetworkSuite) TestUserDefinedNetworkConnectivity(c *testing.T) { testRequires(c, DaemonIsLinux, NotUserNamespace) cli.DockerCmd(c, "network", "create", "-d", "bridge", "br.net1") cli.DockerCmd(c, "run", "-d", "--net=br.net1", "--name=c1.net1", "busybox:glibc", "top") cli.WaitRun(c, "c1.net1") cli.DockerCmd(c, "run", "-d", "--net=br.net1", "--name=c2.net1", "busybox:glibc", "top") cli.WaitRun(c, "c2.net1") // ping first container by its unqualified name _, _, err := dockerCmdWithError("exec", "c2.net1", "ping", "-c", "1", "c1.net1") assert.NilError(c, err) // ping first container by its qualified name _, _, err = dockerCmdWithError("exec", "c2.net1", "ping", "-c", "1", "c1.net1.br.net1") assert.NilError(c, err) // ping with first qualified name masked by an additional domain. should fail _, _, err = dockerCmdWithError("exec", "c2.net1", "ping", "-c", "1", "c1.net1.br.net1.google.com") assert.ErrorContains(c, err, "") } func (s *DockerCLINetworkSuite) TestEmbeddedDNSInvalidInput(c *testing.T) { testRequires(c, DaemonIsLinux, NotUserNamespace) cli.DockerCmd(c, "network", "create", "-d", "bridge", "nw1") // Sending garbage to embedded DNS shouldn't crash the daemon cli.DockerCmd(c, "run", "-i", "--net=nw1", "--name=c1", "debian:bullseye-slim", "bash", "-c", "echo InvalidQuery > /dev/udp/127.0.0.11/53") } func (s *DockerCLINetworkSuite) TestDockerNetworkConnectFailsNoInspectChange(c *testing.T) { cli.DockerCmd(c, "run", "-d", "--name=bb", "busybox", "top") cli.WaitRun(c, "bb") defer cli.DockerCmd(c, "stop", "bb") ns0 := inspectField(c, "bb", "NetworkSettings.Networks.bridge") // A failing redundant network connect should not alter current container's endpoint settings _, _, err := dockerCmdWithError("network", "connect", "bridge", "bb") assert.ErrorContains(c, err, "") ns1 := inspectField(c, "bb", "NetworkSettings.Networks.bridge") assert.Equal(c, ns1, ns0) } func (s *DockerCLINetworkSuite) TestDockerNetworkInternalMode(c *testing.T) { cli.DockerCmd(c, "network", "create", "--driver=bridge", "--internal", "internal") assertNwIsAvailable(c, "internal") nr := getNetworkResource(c, "internal") assert.Assert(c, nr.Internal) cli.DockerCmd(c, "run", "-d", "--net=internal", "--name=first", "busybox:glibc", "top") cli.WaitRun(c, "first") cli.DockerCmd(c, "run", "-d", "--net=internal", "--name=second", "busybox:glibc", "top") cli.WaitRun(c, "second") out, _, err := dockerCmdWithError("exec", "first", "ping", "-W", "4", "-c", "1", "8.8.8.8") assert.ErrorContains(c, err, "") assert.Assert(c, is.Contains(out, "Network is unreachable")) _, _, err = dockerCmdWithError("exec", "second", "ping", "-c", "1", "first") assert.NilError(c, err) } // Test for #21401 func (s *DockerNetworkSuite) TestDockerNetworkCreateDeleteSpecialCharacters(c *testing.T) { cli.DockerCmd(c, "network", "create", "test@#$") assertNwIsAvailable(c, "test@#$") cli.DockerCmd(c, "network", "rm", "test@#$") assertNwNotAvailable(c, "test@#$") cli.DockerCmd(c, "network", "create", "kiwl$%^") assertNwIsAvailable(c, "kiwl$%^") cli.DockerCmd(c, "network", "rm", "kiwl$%^") assertNwNotAvailable(c, "kiwl$%^") } func (s *DockerDaemonSuite) TestDaemonRestartRestoreBridgeNetwork(t *testing.T) { ctx := testutil.GetContext(t) s.d.StartWithBusybox(ctx, t, "--live-restore") defer s.d.Stop(t) oldCon := "old" _, err := s.d.Cmd("run", "-d", "--name", oldCon, "-p", "80:80", "busybox", "top") if err != nil { t.Fatal(err) } oldContainerIP, err := s.d.Cmd("inspect", "-f", "{{ .NetworkSettings.Networks.bridge.IPAddress }}", oldCon) if err != nil { t.Fatal(err) } // Kill the daemon if err := s.d.Kill(); err != nil { t.Fatal(err) } // restart the daemon s.d.Start(t, "--live-restore") // start a new container, the new container's ip should not be the same with // old running container. newCon := "new" _, err = s.d.Cmd("run", "-d", "--name", newCon, "busybox", "top") if err != nil { t.Fatal(err) } newContainerIP, err := s.d.Cmd("inspect", "-f", "{{ .NetworkSettings.Networks.bridge.IPAddress }}", newCon) if err != nil { t.Fatal(err) } if strings.Compare(strings.TrimSpace(oldContainerIP), strings.TrimSpace(newContainerIP)) == 0 { t.Fatalf("new container ip should not equal to old running container ip") } // start a new container, the new container should ping old running container _, err = s.d.Cmd("run", "-t", "busybox", "ping", "-c", "1", oldContainerIP) if err != nil { t.Fatal(err) } // start a new container, trying to publish port 80:80 should fail out, err := s.d.Cmd("run", "-p", "80:80", "-d", "busybox", "top") if err == nil || !strings.Contains(out, "Bind for 0.0.0.0:80 failed: port is already allocated") { t.Fatalf("80 port is allocated to old running container, it should failed on allocating to new container") } // kill old running container and try to allocate again _, err = s.d.Cmd("kill", oldCon) if err != nil { t.Fatal(err) } id, err := s.d.Cmd("run", "-p", "80:80", "-d", "busybox", "top") if err != nil { t.Fatal(err) } // Cleanup because these containers will not be shut down by daemon out, err = s.d.Cmd("stop", newCon) if err != nil { t.Fatalf("err: %v %v", err, out) } _, err = s.d.Cmd("stop", strings.TrimSpace(id)) if err != nil { t.Fatal(err) } } func (s *DockerNetworkSuite) TestDockerNetworkFlagAlias(c *testing.T) { cli.DockerCmd(c, "network", "create", "user") result := cli.DockerCmd(c, "run", "--rm", "--network=user", "--network-alias=foo", "busybox", "true") assert.Equal(c, result.ExitCode, 0, fmt.Sprintf("unexpected status code %d (%s)", result.ExitCode, result.Combined())) output, status, _ := dockerCmdWithError("run", "--rm", "--network=user", "--net-alias=foo", "--network-alias=bar", "busybox", "true") assert.Equal(c, status, 0, fmt.Sprintf("unexpected status code %d (%s)", status, output)) } func (s *DockerNetworkSuite) TestDockerNetworkValidateIP(c *testing.T) { _, _, err := dockerCmdWithError("network", "create", "--ipv6", "--subnet=172.28.0.0/16", "--subnet=2001:db8:1234::/64", "mynet") assert.NilError(c, err) assertNwIsAvailable(c, "mynet") _, _, err = dockerCmdWithError("run", "-d", "--name", "mynet0", "--net=mynet", "--ip", "172.28.99.88", "--ip6", "2001:db8:1234::9988", "busybox", "top") assert.NilError(c, err) cli.WaitRun(c, "mynet0") verifyIPAddressConfig(c, "mynet0", "mynet", "172.28.99.88", "2001:db8:1234::9988") verifyIPAddresses(c, "mynet0", "mynet", "172.28.99.88", "2001:db8:1234::9988") _, _, err = dockerCmdWithError("run", "--net=mynet", "--ip", "mynet_ip", "--ip6", "2001:db8:1234::9999", "busybox", "top") assert.ErrorContains(c, err, "invalid IPv4 address") _, _, err = dockerCmdWithError("run", "--net=mynet", "--ip", "172.28.99.99", "--ip6", "mynet_ip6", "busybox", "top") assert.ErrorContains(c, err, "invalid IPv6 address") // This is a case of IPv4 address to `--ip6` _, _, err = dockerCmdWithError("run", "--net=mynet", "--ip6", "172.28.99.99", "busybox", "top") assert.ErrorContains(c, err, "invalid IPv6 address") // This is a special case of an IPv4-mapped IPv6 address _, _, err = dockerCmdWithError("run", "--net=mynet", "--ip6", "::ffff:172.28.99.99", "busybox", "top") assert.ErrorContains(c, err, "invalid IPv6 address") } // Test case for 26220 func (s *DockerNetworkSuite) TestDockerNetworkDisconnectFromBridge(c *testing.T) { out := cli.DockerCmd(c, "network", "inspect", "--format", "{{.Id}}", "bridge").Stdout() network := strings.TrimSpace(out) name := "test" cli.DockerCmd(c, "create", "--name", name, "busybox", "top") _, _, err := dockerCmdWithError("network", "disconnect", network, name) assert.NilError(c, err) } // TestConntrackFlowsLeak covers the failure scenario of ticket: https://github.com/docker/docker/issues/8795 // Validates that conntrack is correctly cleaned once a container is destroyed func (s *DockerNetworkSuite) TestConntrackFlowsLeak(c *testing.T) { testRequires(c, IsAmd64, DaemonIsLinux, Network, testEnv.IsLocalDaemon) // Create a new network cli.DockerCmd(c, "network", "create", "--subnet=192.168.10.0/24", "--gateway=192.168.10.1", "-o", "com.docker.network.bridge.host_binding_ipv4=192.168.10.1", "testbind") assertNwIsAvailable(c, "testbind") // Launch the server, this will remain listening on an exposed port and reply to any request in a ping/pong fashion cmd := "while true; do echo hello | nc -w 1 -l -u -p 8080; done" cli.DockerCmd(c, "run", "-d", "--name", "server", "--net", "testbind", "-p", "8080:8080/udp", "busybox", "sh", "-c", cmd) // Launch a container client, here the objective is to create a flow that is natted in order to expose the bug cmd = "echo world | nc -w 1 -u 192.168.10.1 8080" cli.DockerCmd(c, "run", "-d", "--name", "client", "--net=host", "busybox", "sh", "-c", cmd) // Get all the flows using netlink flows, err := netlink.ConntrackTableList(netlink.ConntrackTable, unix.AF_INET) assert.NilError(c, err) var flowMatch int for _, flow := range flows { // count only the flows that we are interested in, skipping others that can be laying around the host if flow.Forward.Protocol == unix.IPPROTO_UDP && flow.Forward.DstIP.Equal(net.ParseIP("192.168.10.1")) && flow.Forward.DstPort == 8080 { flowMatch++ } } // The client should have created only 1 flow assert.Equal(c, flowMatch, 1) // Now delete the server, this will trigger the conntrack cleanup cli.DockerCmd(c, "rm", "-fv", "server") // Fetch again all the flows and validate that there is no server flow in the conntrack laying around flows, err = netlink.ConntrackTableList(netlink.ConntrackTable, unix.AF_INET) assert.NilError(c, err) flowMatch = 0 for _, flow := range flows { if flow.Forward.Protocol == unix.IPPROTO_UDP && flow.Forward.DstIP.Equal(net.ParseIP("192.168.10.1")) && flow.Forward.DstPort == 8080 { flowMatch++ } } // All the flows have to be gone assert.Equal(c, flowMatch, 0) }