Golang nat.NewPort函数代码示例

func (container *Container) buildPortMapInfo(ep libnetwork.Endpoint) error {
	if ep == nil {
		return derr.ErrorCodeEmptyEndpoint
	}

	networkSettings := container.NetworkSettings
	if networkSettings == nil {
		return derr.ErrorCodeEmptyNetwork
	}

	driverInfo, err := ep.DriverInfo()
	if err != nil {
		return err
	}

	if driverInfo == nil {
		// It is not an error for epInfo to be nil
		return nil
	}

	if networkSettings.Ports == nil {
		networkSettings.Ports = nat.PortMap{}
	}

	if expData, ok := driverInfo[netlabel.ExposedPorts]; ok {
		if exposedPorts, ok := expData.([]types.TransportPort); ok {
			for _, tp := range exposedPorts {
				natPort, err := nat.NewPort(tp.Proto.String(), strconv.Itoa(int(tp.Port)))
				if err != nil {
					return derr.ErrorCodeParsingPort.WithArgs(tp.Port, err)
				}
				networkSettings.Ports[natPort] = nil
			}
		}
	}

	mapData, ok := driverInfo[netlabel.PortMap]
	if !ok {
		return nil
	}

	if portMapping, ok := mapData.([]types.PortBinding); ok {
		for _, pp := range portMapping {
			natPort, err := nat.NewPort(pp.Proto.String(), strconv.Itoa(int(pp.Port)))
			if err != nil {
				return err
			}
			natBndg := nat.PortBinding{HostIP: pp.HostIP.String(), HostPort: strconv.Itoa(int(pp.HostPort))}
			networkSettings.Ports[natPort] = append(networkSettings.Ports[natPort], natBndg)
		}
	}

	return nil
}

func TestPortInformation(t *testing.T) {
	mockContainerInfo := &plmodels.ContainerInfo{}
	mockContainerConfig := &plmodels.ContainerConfig{}
	containerID := "foo"
	mockContainerConfig.ContainerID = &containerID

	mockHostConfig := &container.HostConfig{}

	portMap := nat.PortMap{}
	port, _ := nat.NewPort("tcp", "80")
	portBinding := nat.PortBinding{
		HostIP:   "127.0.0.1",
		HostPort: "8000",
	}
	portBindings := []nat.PortBinding{portBinding}
	portMap[port] = portBindings
	mockHostConfig.PortBindings = portMap

	mockContainerInfo.ContainerConfig = mockContainerConfig

	ip, _ := netlink.ParseAddr("192.168.1.1/24")
	ips := []netlink.Addr{*ip}

	co := viccontainer.NewVicContainer()
	co.HostConfig = mockHostConfig
	co.ContainerID = containerID
	co.Name = "bar"
	cache.ContainerCache().AddContainer(co)

	ports := portInformation(mockContainerInfo, ips)

	assert.NotEmpty(t, ports, "There should be bound IPs")
	assert.Equal(t, len(ports), 1, "Expected 1 port binding, found %d", len(ports))

	port, _ = nat.NewPort("tcp", "80")
	portBinding = nat.PortBinding{
		HostIP:   "127.0.0.1",
		HostPort: "00",
	}
	portMap[port] = portBindings
	ports = portInformation(mockContainerInfo, ips)
	assert.NotEmpty(t, ports, "There should be 1 bound IP")
	assert.Equal(t, len(ports), 1, "Expected 1 port binding, found %d", len(ports))

	port, _ = nat.NewPort("tcp", "800")
	portBinding = nat.PortBinding{
		HostIP:   "127.0.0.1",
		HostPort: "800",
	}
	portMap[port] = portBindings
	ports = portInformation(mockContainerInfo, ips)
	assert.Equal(t, len(ports), 2, "Expected 2 port binding, found %d", len(ports))
}

//based on expose opt parsing in Docker
func parseDockerExposeOpt(values []string) (map[docker.Port]struct{}, error) {
	exposedPorts := map[docker.Port]struct{}{}

	for _, raw := range values {
		if strings.Contains(raw, ":") {
			return nil, fmt.Errorf("Invalid EXPOSE format: %s", raw)
		}

		proto, ports := nat.SplitProtoPort(raw)
		startPort, endPort, err := nat.ParsePortRange(ports)
		if err != nil {
			return nil, fmt.Errorf("Invalid port range in EXPOSE: %s / error: %s", raw, err)
		}

		for i := startPort; i <= endPort; i++ {
			portInfo, err := nat.NewPort(proto, strconv.FormatUint(i, 10))
			if err != nil {
				return nil, err
			}

			exposedPorts[docker.Port(portInfo)] = struct{}{}
		}
	}
	return exposedPorts, nil
}

// verifyContainerSettings performs validation of the hostconfig and config
// structures.
func (daemon *Daemon) verifyContainerSettings(hostConfig *containertypes.HostConfig, config *containertypes.Config, update bool, validateHostname bool) ([]string, error) {

	// First perform verification of settings common across all platforms.
	if config != nil {
		if config.WorkingDir != "" {
			config.WorkingDir = filepath.FromSlash(config.WorkingDir) // Ensure in platform semantics
			if !system.IsAbs(config.WorkingDir) {
				return nil, fmt.Errorf("the working directory '%s' is invalid, it needs to be an absolute path", config.WorkingDir)
			}
		}

		if len(config.StopSignal) > 0 {
			_, err := signal.ParseSignal(config.StopSignal)
			if err != nil {
				return nil, err
			}
		}

		// Validate if the given hostname is RFC 1123 (https://tools.ietf.org/html/rfc1123) compliant.
		if validateHostname && len(config.Hostname) > 0 {
			// RFC1123 specifies that 63 bytes is the maximium length
			// Windows has the limitation of 63 bytes in length
			// Linux hostname is limited to HOST_NAME_MAX=64, not including the terminating null byte.
			// We limit the length to 63 bytes here to match RFC1035 and RFC1123.
			matched, _ := regexp.MatchString("^(([[:alnum:]]|[[:alnum:]][[:alnum:]\\-]*[[:alnum:]])\\.)*([[:alnum:]]|[[:alnum:]][[:alnum:]\\-]*[[:alnum:]])$", config.Hostname)
			if len(config.Hostname) > 63 || !matched {
				return nil, fmt.Errorf("invalid hostname format: %s", config.Hostname)
			}
		}
	}

	if hostConfig == nil {
		return nil, nil
	}

	if hostConfig.AutoRemove && !hostConfig.RestartPolicy.IsNone() {
		return nil, fmt.Errorf("can't create 'AutoRemove' container with restart policy")
	}

	for port := range hostConfig.PortBindings {
		_, portStr := nat.SplitProtoPort(string(port))
		if _, err := nat.ParsePort(portStr); err != nil {
			return nil, fmt.Errorf("invalid port specification: %q", portStr)
		}
		for _, pb := range hostConfig.PortBindings[port] {
			_, err := nat.NewPort(nat.SplitProtoPort(pb.HostPort))
			if err != nil {
				return nil, fmt.Errorf("invalid port specification: %q", pb.HostPort)
			}
		}
	}

	// Now do platform-specific verification
	return verifyPlatformContainerSettings(daemon, hostConfig, config, update)
}

func getEndpointPortMapInfo(ep libnetwork.Endpoint) (nat.PortMap, error) {
	pm := nat.PortMap{}
	driverInfo, err := ep.DriverInfo()
	if err != nil {
		return pm, err
	}

	if driverInfo == nil {
		// It is not an error for epInfo to be nil
		return pm, nil
	}

	if expData, ok := driverInfo[netlabel.ExposedPorts]; ok {
		if exposedPorts, ok := expData.([]types.TransportPort); ok {
			for _, tp := range exposedPorts {
				natPort, err := nat.NewPort(tp.Proto.String(), strconv.Itoa(int(tp.Port)))
				if err != nil {
					return pm, fmt.Errorf("Error parsing Port value(%v):%v", tp.Port, err)
				}
				pm[natPort] = nil
			}
		}
	}

	mapData, ok := driverInfo[netlabel.PortMap]
	if !ok {
		return pm, nil
	}

	if portMapping, ok := mapData.([]types.PortBinding); ok {
		for _, pp := range portMapping {
			natPort, err := nat.NewPort(pp.Proto.String(), strconv.Itoa(int(pp.Port)))
			if err != nil {
				return pm, err
			}
			natBndg := nat.PortBinding{HostIP: pp.HostIP.String(), HostPort: strconv.Itoa(int(pp.HostPort))}
			pm[natPort] = append(pm[natPort], natBndg)
		}
	}

	return pm, nil
}

// CmdPort lists port mappings for a container.
// If a private port is specified, it also shows the public-facing port that is NATed to the private port.
//
// Usage: docker port CONTAINER [PRIVATE_PORT[/PROTO]]
func (cli *DockerCli) CmdPort(args ...string) error {
	cmd := Cli.Subcmd("port", []string{"CONTAINER [PRIVATE_PORT[/PROTO]]"}, Cli.DockerCommands["port"].Description, true)
	cmd.Require(flag.Min, 1)

	cmd.ParseFlags(args, true)

	c, err := cli.client.ContainerInspect(context.Background(), cmd.Arg(0))
	if err != nil {
		return err
	}

	if cmd.NArg() == 2 {
		var (
			port  = cmd.Arg(1)
			proto = "tcp"
			parts = strings.SplitN(port, "/", 2)
		)

		if len(parts) == 2 && len(parts[1]) != 0 {
			port = parts[0]
			proto = parts[1]
		}
		natPort := port + "/" + proto
		newP, err := nat.NewPort(proto, port)
		if err != nil {
			return err
		}
		if frontends, exists := c.NetworkSettings.Ports[newP]; exists && frontends != nil {
			for _, frontend := range frontends {
				fmt.Fprintf(cli.out, "%s:%s\n", frontend.HostIP, frontend.HostPort)
			}
			return nil
		}
		return fmt.Errorf("Error: No public port '%s' published for %s", natPort, cmd.Arg(0))
	}

	for from, frontends := range c.NetworkSettings.Ports {
		for _, frontend := range frontends {
			fmt.Fprintf(cli.out, "%s -> %s:%s\n", from, frontend.HostIP, frontend.HostPort)
		}
	}

	return nil
}

// verifyContainerSettings performs validation of the hostconfig and config
// structures.
func (daemon *Daemon) verifyContainerSettings(hostConfig *containertypes.HostConfig, config *containertypes.Config, update bool) ([]string, error) {

	// First perform verification of settings common across all platforms.
	if config != nil {
		if config.WorkingDir != "" {
			config.WorkingDir = filepath.FromSlash(config.WorkingDir) // Ensure in platform semantics
			if !system.IsAbs(config.WorkingDir) {
				return nil, fmt.Errorf("The working directory '%s' is invalid. It needs to be an absolute path", config.WorkingDir)
			}
		}

		if len(config.StopSignal) > 0 {
			_, err := signal.ParseSignal(config.StopSignal)
			if err != nil {
				return nil, err
			}
		}
	}

	if hostConfig == nil {
		return nil, nil
	}

	logCfg := daemon.getLogConfig(hostConfig.LogConfig)
	if err := logger.ValidateLogOpts(logCfg.Type, logCfg.Config); err != nil {
		return nil, err
	}

	for port := range hostConfig.PortBindings {
		_, portStr := nat.SplitProtoPort(string(port))
		if _, err := nat.ParsePort(portStr); err != nil {
			return nil, fmt.Errorf("Invalid port specification: %q", portStr)
		}
		for _, pb := range hostConfig.PortBindings[port] {
			_, err := nat.NewPort(nat.SplitProtoPort(pb.HostPort))
			if err != nil {
				return nil, fmt.Errorf("Invalid port specification: %q", pb.HostPort)
			}
		}
	}

	// Now do platform-specific verification
	return verifyPlatformContainerSettings(daemon, hostConfig, config, update)
}

// unrollPortMap processes config for mapping/unmapping ports e.g. from hostconfig.PortBindings
func unrollPortMap(portMap nat.PortMap) ([]*portMapping, error) {
	var portMaps []*portMapping
	for i, pb := range portMap {

		proto, port := nat.SplitProtoPort(string(i))
		nport, err := nat.NewPort(proto, port)
		if err != nil {
			return nil, err
		}

		// iterate over all the ports in pb []nat.PortBinding
		for i := range pb {
			var hostPort int
			var hPort string
			if pb[i].HostPort == "" {
				// use a random port since no host port is specified
				hostPort, err = requestHostPort(proto)
				if err != nil {
					log.Errorf("could not find available port on host")
					return nil, err
				}
				log.Infof("using port %d on the host for port mapping", hostPort)

				// update the hostconfig
				pb[i].HostPort = strconv.Itoa(hostPort)

			} else {
				hostPort, err = strconv.Atoi(pb[i].HostPort)
				if err != nil {
					return nil, err
				}
			}
			hPort = strconv.Itoa(hostPort)
			portMaps = append(portMaps, &portMapping{
				intHostPort: hostPort,
				strHostPort: hPort,
				portProto:   nport,
			})
		}
	}
	return portMaps, nil
}

// BuildCreateEndpointOptions builds endpoint options from a given network.
func (container *Container) BuildCreateEndpointOptions(n libnetwork.Network) ([]libnetwork.EndpointOption, error) {
	var (
		portSpecs     = make(nat.PortSet)
		bindings      = make(nat.PortMap)
		pbList        []types.PortBinding
		exposeList    []types.TransportPort
		createOptions []libnetwork.EndpointOption
	)

	if n.Name() == "bridge" || container.NetworkSettings.IsAnonymousEndpoint {
		createOptions = append(createOptions, libnetwork.CreateOptionAnonymous())
	}

	// Other configs are applicable only for the endpoint in the network
	// to which container was connected to on docker run.
	if n.Name() != container.HostConfig.NetworkMode.NetworkName() &&
		!(n.Name() == "bridge" && container.HostConfig.NetworkMode.IsDefault()) {
		return createOptions, nil
	}

	if container.Config.ExposedPorts != nil {
		portSpecs = container.Config.ExposedPorts
	}

	if container.HostConfig.PortBindings != nil {
		for p, b := range container.HostConfig.PortBindings {
			bindings[p] = []nat.PortBinding{}
			for _, bb := range b {
				bindings[p] = append(bindings[p], nat.PortBinding{
					HostIP:   bb.HostIP,
					HostPort: bb.HostPort,
				})
			}
		}
	}

	ports := make([]nat.Port, len(portSpecs))
	var i int
	for p := range portSpecs {
		ports[i] = p
		i++
	}
	nat.SortPortMap(ports, bindings)
	for _, port := range ports {
		expose := types.TransportPort{}
		expose.Proto = types.ParseProtocol(port.Proto())
		expose.Port = uint16(port.Int())
		exposeList = append(exposeList, expose)

		pb := types.PortBinding{Port: expose.Port, Proto: expose.Proto}
		binding := bindings[port]
		for i := 0; i < len(binding); i++ {
			pbCopy := pb.GetCopy()
			newP, err := nat.NewPort(nat.SplitProtoPort(binding[i].HostPort))
			var portStart, portEnd int
			if err == nil {
				portStart, portEnd, err = newP.Range()
			}
			if err != nil {
				return nil, derr.ErrorCodeHostPort.WithArgs(binding[i].HostPort, err)
			}
			pbCopy.HostPort = uint16(portStart)
			pbCopy.HostPortEnd = uint16(portEnd)
			pbCopy.HostIP = net.ParseIP(binding[i].HostIP)
			pbList = append(pbList, pbCopy)
		}

		if container.HostConfig.PublishAllPorts && len(binding) == 0 {
			pbList = append(pbList, pb)
		}
	}

	createOptions = append(createOptions,
		libnetwork.CreateOptionPortMapping(pbList),
		libnetwork.CreateOptionExposedPorts(exposeList))

	if container.Config.MacAddress != "" {
		mac, err := net.ParseMAC(container.Config.MacAddress)
		if err != nil {
			return nil, err
		}

		genericOption := options.Generic{
			netlabel.MacAddress: mac,
		}

		createOptions = append(createOptions, libnetwork.EndpointOptionGeneric(genericOption))
	}

	return createOptions, nil
}

//.........这里部分代码省略.........
		runCmd = strslice.StrSlice(parsedArgs[1:])
	}
	if *flEntrypoint != "" {
		entrypoint = strslice.StrSlice{*flEntrypoint}
	}
	// Validate if the given hostname is RFC 1123 (https://tools.ietf.org/html/rfc1123) compliant.
	hostname := *flHostname
	if hostname != "" {
		matched, _ := regexp.MatchString("^(([[:alnum:]]|[[:alnum:]][[:alnum:]\\-]*[[:alnum:]])\\.)*([[:alnum:]]|[[:alnum:]][[:alnum:]\\-]*[[:alnum:]])$", hostname)
		if !matched {
			return nil, nil, nil, cmd, fmt.Errorf("invalid hostname format for --hostname: %s", hostname)
		}
	}

	ports, portBindings, err := nat.ParsePortSpecs(flPublish.GetAll())
	if err != nil {
		return nil, nil, nil, cmd, err
	}

	// Merge in exposed ports to the map of published ports
	for _, e := range flExpose.GetAll() {
		if strings.Contains(e, ":") {
			return nil, nil, nil, cmd, fmt.Errorf("invalid port format for --expose: %s", e)
		}
		//support two formats for expose, original format <portnum>/[<proto>] or <startport-endport>/[<proto>]
		proto, port := nat.SplitProtoPort(e)
		//parse the start and end port and create a sequence of ports to expose
		//if expose a port, the start and end port are the same
		start, end, err := nat.ParsePortRange(port)
		if err != nil {
			return nil, nil, nil, cmd, fmt.Errorf("invalid range format for --expose: %s, error: %s", e, err)
		}
		for i := start; i <= end; i++ {
			p, err := nat.NewPort(proto, strconv.FormatUint(i, 10))
			if err != nil {
				return nil, nil, nil, cmd, err
			}
			if _, exists := ports[p]; !exists {
				ports[p] = struct{}{}
			}
		}
	}

	// parse device mappings
	deviceMappings := []container.DeviceMapping{}
	for _, device := range flDevices.GetAll() {
		deviceMapping, err := ParseDevice(device)
		if err != nil {
			return nil, nil, nil, cmd, err
		}
		deviceMappings = append(deviceMappings, deviceMapping)
	}

	// collect all the environment variables for the container
	envVariables, err := readKVStrings(flEnvFile.GetAll(), flEnv.GetAll())
	if err != nil {
		return nil, nil, nil, cmd, err
	}

	// collect all the labels for the container
	labels, err := readKVStrings(flLabelsFile.GetAll(), flLabels.GetAll())
	if err != nil {
		return nil, nil, nil, cmd, err
	}

	ipcMode := container.IpcMode(*flIpcMode)

// BuildCreateEndpointOptions builds endpoint options from a given network.
func (container *Container) BuildCreateEndpointOptions(n libnetwork.Network, epConfig *network.EndpointSettings, sb libnetwork.Sandbox) ([]libnetwork.EndpointOption, error) {
	var (
		portSpecs     = make(nat.PortSet)
		bindings      = make(nat.PortMap)
		pbList        []types.PortBinding
		exposeList    []types.TransportPort
		createOptions []libnetwork.EndpointOption
	)

	if n.Name() == "bridge" || container.NetworkSettings.IsAnonymousEndpoint {
		createOptions = append(createOptions, libnetwork.CreateOptionAnonymous())
	}

	if epConfig != nil {
		ipam := epConfig.IPAMConfig
		if ipam != nil && (ipam.IPv4Address != "" || ipam.IPv6Address != "") {
			createOptions = append(createOptions,
				libnetwork.CreateOptionIpam(net.ParseIP(ipam.IPv4Address), net.ParseIP(ipam.IPv6Address), nil))
		}

		for _, alias := range epConfig.Aliases {
			createOptions = append(createOptions, libnetwork.CreateOptionMyAlias(alias))
		}
	}

	if !containertypes.NetworkMode(n.Name()).IsUserDefined() {
		createOptions = append(createOptions, libnetwork.CreateOptionDisableResolution())
	}

	// configs that are applicable only for the endpoint in the network
	// to which container was connected to on docker run.
	// Ideally all these network-specific endpoint configurations must be moved under
	// container.NetworkSettings.Networks[n.Name()]
	if n.Name() == container.HostConfig.NetworkMode.NetworkName() ||
		(n.Name() == "bridge" && container.HostConfig.NetworkMode.IsDefault()) {
		if container.Config.MacAddress != "" {
			mac, err := net.ParseMAC(container.Config.MacAddress)
			if err != nil {
				return nil, err
			}

			genericOption := options.Generic{
				netlabel.MacAddress: mac,
			}

			createOptions = append(createOptions, libnetwork.EndpointOptionGeneric(genericOption))
		}
	}

	// Port-mapping rules belong to the container & applicable only to non-internal networks
	portmaps := getSandboxPortMapInfo(sb)
	if n.Info().Internal() || len(portmaps) > 0 {
		return createOptions, nil
	}

	if container.Config.ExposedPorts != nil {
		portSpecs = container.Config.ExposedPorts
	}

	if container.HostConfig.PortBindings != nil {
		for p, b := range container.HostConfig.PortBindings {
			bindings[p] = []nat.PortBinding{}
			for _, bb := range b {
				bindings[p] = append(bindings[p], nat.PortBinding{
					HostIP:   bb.HostIP,
					HostPort: bb.HostPort,
				})
			}
		}
	}

	ports := make([]nat.Port, len(portSpecs))
	var i int
	for p := range portSpecs {
		ports[i] = p
		i++
	}
	nat.SortPortMap(ports, bindings)
	for _, port := range ports {
		expose := types.TransportPort{}
		expose.Proto = types.ParseProtocol(port.Proto())
		expose.Port = uint16(port.Int())
		exposeList = append(exposeList, expose)

		pb := types.PortBinding{Port: expose.Port, Proto: expose.Proto}
		binding := bindings[port]
		for i := 0; i < len(binding); i++ {
			pbCopy := pb.GetCopy()
			newP, err := nat.NewPort(nat.SplitProtoPort(binding[i].HostPort))
			var portStart, portEnd int
			if err == nil {
				portStart, portEnd, err = newP.Range()
			}
			if err != nil {
				return nil, derr.ErrorCodeHostPort.WithArgs(binding[i].HostPort, err)
			}
			pbCopy.HostPort = uint16(portStart)
			pbCopy.HostPortEnd = uint16(portEnd)
			pbCopy.HostIP = net.ParseIP(binding[i].HostIP)
//.........这里部分代码省略.........

//.........这里部分代码省略.........
		sboxOptions = append(sboxOptions, libnetwork.OptionExtraHost(parts[0], parts[1]))
	}

	if container.HostConfig.PortBindings != nil {
		for p, b := range container.HostConfig.PortBindings {
			bindings[p] = []nat.PortBinding{}
			for _, bb := range b {
				bindings[p] = append(bindings[p], nat.PortBinding{
					HostIP:   bb.HostIP,
					HostPort: bb.HostPort,
				})
			}
		}
	}

	portSpecs := container.Config.ExposedPorts
	ports := make([]nat.Port, len(portSpecs))
	var i int
	for p := range portSpecs {
		ports[i] = p
		i++
	}
	nat.SortPortMap(ports, bindings)
	for _, port := range ports {
		expose := types.TransportPort{}
		expose.Proto = types.ParseProtocol(port.Proto())
		expose.Port = uint16(port.Int())
		exposeList = append(exposeList, expose)

		pb := types.PortBinding{Port: expose.Port, Proto: expose.Proto}
		binding := bindings[port]
		for i := 0; i < len(binding); i++ {
			pbCopy := pb.GetCopy()
			newP, err := nat.NewPort(nat.SplitProtoPort(binding[i].HostPort))
			var portStart, portEnd int
			if err == nil {
				portStart, portEnd, err = newP.Range()
			}
			if err != nil {
				return nil, fmt.Errorf("Error parsing HostPort value(%s):%v", binding[i].HostPort, err)
			}
			pbCopy.HostPort = uint16(portStart)
			pbCopy.HostPortEnd = uint16(portEnd)
			pbCopy.HostIP = net.ParseIP(binding[i].HostIP)
			pbList = append(pbList, pbCopy)
		}

		if container.HostConfig.PublishAllPorts && len(binding) == 0 {
			pbList = append(pbList, pb)
		}
	}

	sboxOptions = append(sboxOptions,
		libnetwork.OptionPortMapping(pbList),
		libnetwork.OptionExposedPorts(exposeList))

	// Link feature is supported only for the default bridge network.
	// return if this call to build join options is not for default bridge network
	if n.Name() != defaultNetName {
		return sboxOptions, nil
	}

	ep, _ := container.GetEndpointInNetwork(n)
	if ep == nil {
		return sboxOptions, nil
	}

// verifyContainerSettings performs validation of the hostconfig and config
// structures.
func (daemon *Daemon) verifyContainerSettings(hostConfig *containertypes.HostConfig, config *containertypes.Config, update bool) ([]string, error) {

	// First perform verification of settings common across all platforms.
	if config != nil {
		if config.WorkingDir != "" {
			config.WorkingDir = filepath.FromSlash(config.WorkingDir) // Ensure in platform semantics
			if !system.IsAbs(config.WorkingDir) {
				return nil, fmt.Errorf("the working directory '%s' is invalid, it needs to be an absolute path", config.WorkingDir)
			}
		}

		if len(config.StopSignal) > 0 {
			_, err := signal.ParseSignal(config.StopSignal)
			if err != nil {
				return nil, err
			}
		}

		// Validate if Env contains empty variable or not (e.g., ``, `=foo`)
		for _, env := range config.Env {
			if _, err := opts.ValidateEnv(env); err != nil {
				return nil, err
			}
		}
	}

	if hostConfig == nil {
		return nil, nil
	}

	if hostConfig.AutoRemove && !hostConfig.RestartPolicy.IsNone() {
		return nil, fmt.Errorf("can't create 'AutoRemove' container with restart policy")
	}

	for port := range hostConfig.PortBindings {
		_, portStr := nat.SplitProtoPort(string(port))
		if _, err := nat.ParsePort(portStr); err != nil {
			return nil, fmt.Errorf("invalid port specification: %q", portStr)
		}
		for _, pb := range hostConfig.PortBindings[port] {
			_, err := nat.NewPort(nat.SplitProtoPort(pb.HostPort))
			if err != nil {
				return nil, fmt.Errorf("invalid port specification: %q", pb.HostPort)
			}
		}
	}

	p := hostConfig.RestartPolicy

	switch p.Name {
	case "always", "unless-stopped", "no":
		if p.MaximumRetryCount != 0 {
			return nil, fmt.Errorf("maximum retry count cannot be used with restart policy '%s'", p.Name)
		}
	case "on-failure":
		if p.MaximumRetryCount < 0 {
			return nil, fmt.Errorf("maximum retry count cannot be negative")
		}
	case "":
	// do nothing
	default:
		return nil, fmt.Errorf("invalid restart policy '%s'", p.Name)
	}

	// Now do platform-specific verification
	return verifyPlatformContainerSettings(daemon, hostConfig, config, update)
}

func (r *Reloader) Call2(msg HubMessage) error {
	log.Println("received message to reload ...")

	log.Printf("certPath %q, tls %v, host %v, api-version %v", os.Getenv("DOCKER_CERT_PATH"), os.Getenv("DOCKER_TLS_VERIFY"), os.Getenv("DOCKER_HOST"), os.Getenv("DOCKER_API_VERSION"))
	cli, err := client.NewEnvClient()
	//defaultHeaders := map[string]string{"User-Agent": "webhook-reloader"}
	//cli, err := client.NewClient("unix:///var/run/docker.sock", "v1.22", nil, defaultHeaders)
	if err != nil {
		log.Print(err)
		return err
	}

	image := msg.Repository.RepoName
	tag := "latest"
	log.Printf("pull image %q with tag %q ...", image, tag)
	//ctx, cancel := context.WithTimeout(context.Background(), time.Duration(500) * time.Millisecond)
	//defer cancel()
	rc, err := cli.ImagePull(
		context.Background(),
		types.ImagePullOptions{
			ImageID: msg.Repository.RepoName,
			Tag:     tag}, nil)
	if err != nil {
		log.Print(err)
		return err
	}
	defer rc.Close()
	dec := json.NewDecoder(rc)
	for {
		var message jsonmessage.JSONMessage
		if err := dec.Decode(&message); err != nil {
			if err == io.EOF {
				break
			}
			log.Print(err)
			return err
		}
		log.Printf("%s", message)
	}

	containerName := "test"
	previousContainer := types.Container{}

	psOptions := types.ContainerListOptions{All: true}
	containers, err := cli.ContainerList(psOptions)
	if err != nil {
		log.Print(err)
		return err
	}
	for _, c := range containers {
		for _, name := range c.Names {
			log.Printf("%q/%q", c.ID, name)
			if name == fmt.Sprintf("/%s", containerName) {
				previousContainer = c
			}
		}
	}
	log.Printf("prev container %v", previousContainer)

	err = cli.ContainerStop(containerName, 10)
	if err != nil {
		log.Printf("stop %q: %v", containerName, err)
		//return err
	}

	rmOptions := types.ContainerRemoveOptions{ContainerID: containerName}
	err = cli.ContainerRemove(rmOptions)
	if err != nil {
		log.Printf("rm %q: %v", containerName, err)
		//return err
	}

	newContainerConfig := types.ContainerCreateConfig{}
	newContainerConfig.Config.Image = image

	port, err := nat.NewPort("8080", "http")
	exposedPorts := make(nat.PortSet)
	exposedPorts[port] = struct{}{}
	cli.ContainerCreate(
		&container.Config{
			Image:        image,
			ExposedPorts: exposedPorts},
		&container.HostConfig{},
		&network.NetworkingConfig{},
		containerName)

	log.Printf("done.")

	return nil
}

//.........这里部分代码省略.........
	}

	if !containertypes.NetworkMode(n.Name()).IsUserDefined() {
		createOptions = append(createOptions, libnetwork.CreateOptionDisableResolution())
	}

	// configs that are applicable only for the endpoint in the network
	// to which container was connected to on docker run.
	// Ideally all these network-specific endpoint configurations must be moved under
	// container.NetworkSettings.Networks[n.Name()]
	if n.Name() == container.HostConfig.NetworkMode.NetworkName() ||
		(n.Name() == defaultNetName && container.HostConfig.NetworkMode.IsDefault()) {
		if container.Config.MacAddress != "" {
			mac, err := net.ParseMAC(container.Config.MacAddress)
			if err != nil {
				return nil, err
			}

			genericOption := options.Generic{
				netlabel.MacAddress: mac,
			}

			createOptions = append(createOptions, libnetwork.EndpointOptionGeneric(genericOption))
		}
	}

	// Port-mapping rules belong to the container & applicable only to non-internal networks
	portmaps := GetSandboxPortMapInfo(sb)
	if n.Info().Internal() || len(portmaps) > 0 {
		return createOptions, nil
	}

	if container.HostConfig.PortBindings != nil {
		for p, b := range container.HostConfig.PortBindings {
			bindings[p] = []nat.PortBinding{}
			for _, bb := range b {
				bindings[p] = append(bindings[p], nat.PortBinding{
					HostIP:   bb.HostIP,
					HostPort: bb.HostPort,
				})
			}
		}
	}

	portSpecs := container.Config.ExposedPorts
	ports := make([]nat.Port, len(portSpecs))
	var i int
	for p := range portSpecs {
		ports[i] = p
		i++
	}
	nat.SortPortMap(ports, bindings)
	for _, port := range ports {
		expose := types.TransportPort{}
		expose.Proto = types.ParseProtocol(port.Proto())
		expose.Port = uint16(port.Int())
		exposeList = append(exposeList, expose)

		pb := types.PortBinding{Port: expose.Port, Proto: expose.Proto}
		binding := bindings[port]
		for i := 0; i < len(binding); i++ {
			pbCopy := pb.GetCopy()
			newP, err := nat.NewPort(nat.SplitProtoPort(binding[i].HostPort))
			var portStart, portEnd int
			if err == nil {
				portStart, portEnd, err = newP.Range()
			}
			if err != nil {
				return nil, fmt.Errorf("Error parsing HostPort value(%s):%v", binding[i].HostPort, err)
			}
			pbCopy.HostPort = uint16(portStart)
			pbCopy.HostPortEnd = uint16(portEnd)
			pbCopy.HostIP = net.ParseIP(binding[i].HostIP)
			pbList = append(pbList, pbCopy)
		}

		if container.HostConfig.PublishAllPorts && len(binding) == 0 {
			pbList = append(pbList, pb)
		}
	}

	var dns []string

	if len(container.HostConfig.DNS) > 0 {
		dns = container.HostConfig.DNS
	} else if len(daemonDNS) > 0 {
		dns = daemonDNS
	}

	if len(dns) > 0 {
		createOptions = append(createOptions,
			libnetwork.CreateOptionDNS(dns))
	}

	createOptions = append(createOptions,
		libnetwork.CreateOptionPortMapping(pbList),
		libnetwork.CreateOptionExposedPorts(exposeList))

	return createOptions, nil
}