Update graph to use vendored distribution client for the v2 codepath

Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
Signed-off-by: Tibor Vass <tibor@docker.com>

docs/auth.go

@@ -125,7 +125,7 @@ func loginV1(authConfig *cliconfig.AuthConfig, registryEndpoint *Endpoint) (stri
 		return "", fmt.Errorf("Server Error: Server Address not set.")
 	}
 
-	loginAgainstOfficialIndex := serverAddress == IndexServerAddress()
+	loginAgainstOfficialIndex := serverAddress == INDEXSERVER
 
 	// to avoid sending the server address to the server it should be removed before being marshalled
 	authCopy := *authConfig

docs/auth_test.go

@@ -37,7 +37,7 @@ func setupTempConfigFile() (*cliconfig.ConfigFile, error) {
 	root = filepath.Join(root, cliconfig.CONFIGFILE)
 	configFile := cliconfig.NewConfigFile(root)
 
-	for _, registry := range []string{"testIndex", IndexServerAddress()} {
+	for _, registry := range []string{"testIndex", INDEXSERVER} {
 		configFile.AuthConfigs[registry] = cliconfig.AuthConfig{
 			Username: "docker-user",
 			Password: "docker-pass",
@@ -82,7 +82,7 @@ func TestResolveAuthConfigIndexServer(t *testing.T) {
 	}
 	defer os.RemoveAll(configFile.Filename())
 
-	indexConfig := configFile.AuthConfigs[IndexServerAddress()]
+	indexConfig := configFile.AuthConfigs[INDEXSERVER]
 
 	officialIndex := &IndexInfo{
 		Official: true,
@@ -92,10 +92,10 @@ func TestResolveAuthConfigIndexServer(t *testing.T) {
 	}
 
 	resolved := ResolveAuthConfig(configFile, officialIndex)
-	assertEqual(t, resolved, indexConfig, "Expected ResolveAuthConfig to return IndexServerAddress()")
+	assertEqual(t, resolved, indexConfig, "Expected ResolveAuthConfig to return INDEXSERVER")
 
 	resolved = ResolveAuthConfig(configFile, privateIndex)
-	assertNotEqual(t, resolved, indexConfig, "Expected ResolveAuthConfig to not return IndexServerAddress()")
+	assertNotEqual(t, resolved, indexConfig, "Expected ResolveAuthConfig to not return INDEXSERVER")
 }
 
 func TestResolveAuthConfigFullURL(t *testing.T) {
@@ -120,7 +120,7 @@ func TestResolveAuthConfigFullURL(t *testing.T) {
 		Password: "baz-pass",
 		Email:    "baz@example.com",
 	}
-	configFile.AuthConfigs[IndexServerAddress()] = officialAuth
+	configFile.AuthConfigs[INDEXSERVER] = officialAuth
 
 	expectedAuths := map[string]cliconfig.AuthConfig{
 		"registry.example.com": registryAuth,

docs/config.go

@@ -21,9 +21,16 @@ type Options struct {
 }
 
 const (
+	DEFAULT_NAMESPACE               = "docker.io"
+	DEFAULT_V2_REGISTRY             = "https://registry-1.docker.io"
+	DEFAULT_REGISTRY_VERSION_HEADER = "Docker-Distribution-Api-Version"
+	DEFAULT_V1_REGISTRY             = "https://index.docker.io"
+
+	CERTS_DIR = "/etc/docker/certs.d"
+
 	// Only used for user auth + account creation
-	INDEXSERVER    = "https://index.docker.io/v1/"
+	REGISTRYSERVER = DEFAULT_V2_REGISTRY
-	REGISTRYSERVER = "https://registry-1.docker.io/v2/"
+	INDEXSERVER    = DEFAULT_V1_REGISTRY + "/v1/"
 	INDEXNAME      = "docker.io"
 
 	// INDEXSERVER = "https://registry-stage.hub.docker.com/v1/"
@@ -34,14 +41,6 @@ var (
 	emptyServiceConfig       = NewServiceConfig(nil)
 )
 
-func IndexServerAddress() string {
-	return INDEXSERVER
-}
-
-func IndexServerName() string {
-	return INDEXNAME
-}
-
 // InstallFlags adds command-line options to the top-level flag parser for
 // the current process.
 func (options *Options) InstallFlags() {
@@ -72,6 +71,7 @@ func (ipnet *netIPNet) UnmarshalJSON(b []byte) (err error) {
 type ServiceConfig struct {
 	InsecureRegistryCIDRs []*netIPNet           `json:"InsecureRegistryCIDRs"`
 	IndexConfigs          map[string]*IndexInfo `json:"IndexConfigs"`
+	Mirrors               []string
 }
 
 // NewServiceConfig returns a new instance of ServiceConfig
@@ -93,6 +93,9 @@ func NewServiceConfig(options *Options) *ServiceConfig {
 	config := &ServiceConfig{
 		InsecureRegistryCIDRs: make([]*netIPNet, 0),
 		IndexConfigs:          make(map[string]*IndexInfo, 0),
+		// Hack: Bypass setting the mirrors to IndexConfigs since they are going away
+		// and Mirrors are only for the official registry anyways.
+		Mirrors: options.Mirrors.GetAll(),
 	}
 	// Split --insecure-registry into CIDR and registry-specific settings.
 	for _, r := range options.InsecureRegistries.GetAll() {
@@ -113,9 +116,9 @@ func NewServiceConfig(options *Options) *ServiceConfig {
 	}
 
 	// Configure public registry.
-	config.IndexConfigs[IndexServerName()] = &IndexInfo{
+	config.IndexConfigs[INDEXNAME] = &IndexInfo{
-		Name:     IndexServerName(),
+		Name:     INDEXNAME,
-		Mirrors:  options.Mirrors.GetAll(),
+		Mirrors:  config.Mirrors,
 		Secure:   true,
 		Official: true,
 	}
@@ -193,8 +196,8 @@ func ValidateMirror(val string) (string, error) {
 // ValidateIndexName validates an index name.
 func ValidateIndexName(val string) (string, error) {
 	// 'index.docker.io' => 'docker.io'
-	if val == "index."+IndexServerName() {
+	if val == "index."+INDEXNAME {
-		val = IndexServerName()
+		val = INDEXNAME
 	}
 	if strings.HasPrefix(val, "-") || strings.HasSuffix(val, "-") {
 		return "", fmt.Errorf("Invalid index name (%s). Cannot begin or end with a hyphen.", val)
@@ -264,7 +267,7 @@ func (config *ServiceConfig) NewIndexInfo(indexName string) (*IndexInfo, error)
 // index as the AuthConfig key, and uses the (host)name[:port] for private indexes.
 func (index *IndexInfo) GetAuthConfigKey() string {
 	if index.Official {
-		return IndexServerAddress()
+		return INDEXSERVER
 	}
 	return index.Name
 }
@@ -277,7 +280,7 @@ func splitReposName(reposName string) (string, string) {
 		!strings.Contains(nameParts[0], ":") && nameParts[0] != "localhost") {
 		// This is a Docker Index repos (ex: samalba/hipache or ubuntu)
 		// 'docker.io'
-		indexName = IndexServerName()
+		indexName = INDEXNAME
 		remoteName = reposName
 	} else {
 		indexName = nameParts[0]

docs/endpoint.go

@@ -1,6 +1,7 @@
 package registry
 
 import (
+	"crypto/tls"
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
@@ -12,6 +13,7 @@ import (
 	"github.com/Sirupsen/logrus"
 	"github.com/docker/distribution/registry/api/v2"
 	"github.com/docker/distribution/registry/client/transport"
+	"github.com/docker/docker/pkg/tlsconfig"
 )
 
 // for mocking in unit tests
@@ -44,7 +46,9 @@ func scanForAPIVersion(address string) (string, APIVersion) {
 // NewEndpoint parses the given address to return a registry endpoint.
 func NewEndpoint(index *IndexInfo, metaHeaders http.Header) (*Endpoint, error) {
 	// *TODO: Allow per-registry configuration of endpoints.
-	endpoint, err := newEndpoint(index.GetAuthConfigKey(), index.Secure, metaHeaders)
+	tlsConfig := tlsconfig.ServerDefault
+	tlsConfig.InsecureSkipVerify = !index.Secure
+	endpoint, err := newEndpoint(index.GetAuthConfigKey(), &tlsConfig, metaHeaders)
 	if err != nil {
 		return nil, err
 	}
@@ -82,7 +86,7 @@ func validateEndpoint(endpoint *Endpoint) error {
 	return nil
 }
 
-func newEndpoint(address string, secure bool, metaHeaders http.Header) (*Endpoint, error) {
+func newEndpoint(address string, tlsConfig *tls.Config, metaHeaders http.Header) (*Endpoint, error) {
 	var (
 		endpoint       = new(Endpoint)
 		trimmedAddress string
@@ -93,13 +97,16 @@ func newEndpoint(address string, secure bool, metaHeaders http.Header) (*Endpoin
 		address = "https://" + address
 	}
 
+	endpoint.IsSecure = (tlsConfig == nil || !tlsConfig.InsecureSkipVerify)
+
 	trimmedAddress, endpoint.Version = scanForAPIVersion(address)
 
 	if endpoint.URL, err = url.Parse(trimmedAddress); err != nil {
 		return nil, err
 	}
-	endpoint.IsSecure = secure
+
-	tr := NewTransport(ConnectTimeout, endpoint.IsSecure)
+	// TODO(tiborvass): make sure a ConnectTimeout transport is used
+	tr := NewTransport(tlsConfig)
 	endpoint.client = HTTPClient(transport.NewTransport(tr, DockerHeaders(metaHeaders)...))
 	return endpoint, nil
 }
@@ -166,7 +173,7 @@ func (e *Endpoint) Ping() (RegistryInfo, error) {
 func (e *Endpoint) pingV1() (RegistryInfo, error) {
 	logrus.Debugf("attempting v1 ping for registry endpoint %s", e)
 
-	if e.String() == IndexServerAddress() {
+	if e.String() == INDEXSERVER {
 		// Skip the check, we know this one is valid
 		// (and we never want to fallback to http in case of error)
 		return RegistryInfo{Standalone: false}, nil

docs/endpoint_test.go

@@ -12,14 +12,14 @@ func TestEndpointParse(t *testing.T) {
 		str      string
 		expected string
 	}{
-		{IndexServerAddress(), IndexServerAddress()},
+		{INDEXSERVER, INDEXSERVER},
 		{"http://0.0.0.0:5000/v1/", "http://0.0.0.0:5000/v1/"},
 		{"http://0.0.0.0:5000/v2/", "http://0.0.0.0:5000/v2/"},
 		{"http://0.0.0.0:5000", "http://0.0.0.0:5000/v0/"},
 		{"0.0.0.0:5000", "https://0.0.0.0:5000/v0/"},
 	}
 	for _, td := range testData {
-		e, err := newEndpoint(td.str, false, nil)
+		e, err := newEndpoint(td.str, nil, nil)
 		if err != nil {
 			t.Errorf("%q: %s", td.str, err)
 		}
@@ -60,7 +60,7 @@ func TestValidateEndpointAmbiguousAPIVersion(t *testing.T) {
 	testEndpoint := Endpoint{
 		URL:     testServerURL,
 		Version: APIVersionUnknown,
-		client:  HTTPClient(NewTransport(ConnectTimeout, false)),
+		client:  HTTPClient(NewTransport(nil)),
 	}
 
 	if err = validateEndpoint(&testEndpoint); err != nil {

docs/registry.go

@@ -2,25 +2,20 @@ package registry
 
 import (
 	"crypto/tls"
-	"crypto/x509"
 	"errors"
-	"fmt"
-	"io/ioutil"
 	"net"
 	"net/http"
 	"os"
-	"path"
-	"path/filepath"
 	"runtime"
 	"strings"
-	"sync"
 	"time"
 
 	"github.com/Sirupsen/logrus"
+	"github.com/docker/distribution/registry/api/errcode"
+	"github.com/docker/distribution/registry/api/v2"
 	"github.com/docker/distribution/registry/client/transport"
 	"github.com/docker/docker/autogen/dockerversion"
 	"github.com/docker/docker/pkg/parsers/kernel"
-	"github.com/docker/docker/pkg/timeoutconn"
 	"github.com/docker/docker/pkg/tlsconfig"
 	"github.com/docker/docker/pkg/useragent"
 )
@@ -57,135 +52,13 @@ func init() {
 	dockerUserAgent = useragent.AppendVersions("", httpVersion...)
 }
 
-type httpsRequestModifier struct {
+func hasFile(files []os.FileInfo, name string) bool {
-	mu        sync.Mutex
+	for _, f := range files {
-	tlsConfig *tls.Config
+		if f.Name() == name {
-}
+			return true
-
-// DRAGONS(tiborvass): If someone wonders why do we set tlsconfig in a roundtrip,
-// it's because it's so as to match the current behavior in master: we generate the
-// certpool on every-goddam-request. It's not great, but it allows people to just put
-// the certs in /etc/docker/certs.d/.../ and let docker "pick it up" immediately. Would
-// prefer an fsnotify implementation, but that was out of scope of my refactoring.
-func (m *httpsRequestModifier) ModifyRequest(req *http.Request) error {
-	var (
-		roots   *x509.CertPool
-		certs   []tls.Certificate
-		hostDir string
-	)
-
-	if req.URL.Scheme == "https" {
-		hasFile := func(files []os.FileInfo, name string) bool {
-			for _, f := range files {
-				if f.Name() == name {
-					return true
-				}
-			}
-			return false
-		}
-
-		if runtime.GOOS == "windows" {
-			hostDir = path.Join(os.TempDir(), "/docker/certs.d", req.URL.Host)
-		} else {
-			hostDir = path.Join("/etc/docker/certs.d", req.URL.Host)
-		}
-		logrus.Debugf("hostDir: %s", hostDir)
-		fs, err := ioutil.ReadDir(hostDir)
-		if err != nil && !os.IsNotExist(err) {
-			return err
-		}
-
-		for _, f := range fs {
-			if strings.HasSuffix(f.Name(), ".crt") {
-				if roots == nil {
-					roots = x509.NewCertPool()
-				}
-				logrus.Debugf("crt: %s", hostDir+"/"+f.Name())
-				data, err := ioutil.ReadFile(filepath.Join(hostDir, f.Name()))
-				if err != nil {
-					return err
-				}
-				roots.AppendCertsFromPEM(data)
-			}
-			if strings.HasSuffix(f.Name(), ".cert") {
-				certName := f.Name()
-				keyName := certName[:len(certName)-5] + ".key"
-				logrus.Debugf("cert: %s", hostDir+"/"+f.Name())
-				if !hasFile(fs, keyName) {
-					return fmt.Errorf("Missing key %s for certificate %s", keyName, certName)
-				}
-				cert, err := tls.LoadX509KeyPair(filepath.Join(hostDir, certName), path.Join(hostDir, keyName))
-				if err != nil {
-					return err
-				}
-				certs = append(certs, cert)
-			}
-			if strings.HasSuffix(f.Name(), ".key") {
-				keyName := f.Name()
-				certName := keyName[:len(keyName)-4] + ".cert"
-				logrus.Debugf("key: %s", hostDir+"/"+f.Name())
-				if !hasFile(fs, certName) {
-					return fmt.Errorf("Missing certificate %s for key %s", certName, keyName)
-				}
-			}
-		}
-		m.mu.Lock()
-		m.tlsConfig.RootCAs = roots
-		m.tlsConfig.Certificates = certs
-		m.mu.Unlock()
-	}
-	return nil
-}
-
-func NewTransport(timeout TimeoutType, secure bool) http.RoundTripper {
-	tlsConfig := &tls.Config{
-		// Avoid fallback to SSL protocols < TLS1.0
-		MinVersion:         tls.VersionTLS10,
-		InsecureSkipVerify: !secure,
-		CipherSuites:       tlsconfig.DefaultServerAcceptedCiphers,
-	}
-
-	tr := &http.Transport{
-		DisableKeepAlives: true,
-		Proxy:             http.ProxyFromEnvironment,
-		TLSClientConfig:   tlsConfig,
-	}
-
-	switch timeout {
-	case ConnectTimeout:
-		tr.Dial = func(proto string, addr string) (net.Conn, error) {
-			// Set the connect timeout to 30 seconds to allow for slower connection
-			// times...
-			d := net.Dialer{Timeout: 30 * time.Second, DualStack: true}
-
-			conn, err := d.Dial(proto, addr)
-			if err != nil {
-				return nil, err
-			}
-			// Set the recv timeout to 10 seconds
-			conn.SetDeadline(time.Now().Add(10 * time.Second))
-			return conn, nil
-		}
-	case ReceiveTimeout:
-		tr.Dial = func(proto string, addr string) (net.Conn, error) {
-			d := net.Dialer{DualStack: true}
-
-			conn, err := d.Dial(proto, addr)
-			if err != nil {
-				return nil, err
-			}
-			conn = timeoutconn.New(conn, 1*time.Minute)
-			return conn, nil
 		}
 	}
-
+	return false
-	if secure {
-		// note: httpsTransport also handles http transport
-		// but for HTTPS, it sets up the certs
-		return transport.NewTransport(tr, &httpsRequestModifier{tlsConfig: tlsConfig})
-	}
-
-	return tr
 }
 
 // DockerHeaders returns request modifiers that ensure requests have
@@ -202,10 +75,6 @@ func DockerHeaders(metaHeaders http.Header) []transport.RequestModifier {
 }
 
 func HTTPClient(transport http.RoundTripper) *http.Client {
-	if transport == nil {
-		transport = NewTransport(ConnectTimeout, true)
-	}
-
 	return &http.Client{
 		Transport:     transport,
 		CheckRedirect: AddRequiredHeadersToRedirectedRequests,
@@ -245,3 +114,52 @@ func AddRequiredHeadersToRedirectedRequests(req *http.Request, via []*http.Reque
 	}
 	return nil
 }
+
+func shouldV2Fallback(err errcode.Error) bool {
+	logrus.Debugf("v2 error: %T %v", err, err)
+	switch err.Code {
+	case v2.ErrorCodeUnauthorized, v2.ErrorCodeManifestUnknown:
+		return true
+	}
+	return false
+}
+
+type ErrNoSupport struct{ Err error }
+
+func (e ErrNoSupport) Error() string {
+	if e.Err == nil {
+		return "not supported"
+	}
+	return e.Err.Error()
+}
+
+func ContinueOnError(err error) bool {
+	switch v := err.(type) {
+	case errcode.Errors:
+		return ContinueOnError(v[0])
+	case ErrNoSupport:
+		return ContinueOnError(v.Err)
+	case errcode.Error:
+		return shouldV2Fallback(v)
+	}
+	return false
+}
+
+func NewTransport(tlsConfig *tls.Config) *http.Transport {
+	if tlsConfig == nil {
+		var cfg = tlsconfig.ServerDefault
+		tlsConfig = &cfg
+	}
+	return &http.Transport{
+		Proxy: http.ProxyFromEnvironment,
+		Dial: (&net.Dialer{
+			Timeout:   30 * time.Second,
+			KeepAlive: 30 * time.Second,
+			DualStack: true,
+		}).Dial,
+		TLSHandshakeTimeout: 10 * time.Second,
+		TLSClientConfig:     tlsConfig,
+		// TODO(dmcgowan): Call close idle connections when complete and use keep alive
+		DisableKeepAlives: true,
+	}
+}

docs/registry_mock_test.go

@@ -165,7 +165,7 @@ func makeHttpsIndex(req string) *IndexInfo {
 
 func makePublicIndex() *IndexInfo {
 	index := &IndexInfo{
-		Name:     IndexServerAddress(),
+		Name:     INDEXSERVER,
 		Secure:   true,
 		Official: true,
 	}

docs/registry_test.go

@@ -27,7 +27,7 @@ func spawnTestRegistrySession(t *testing.T) *Session {
 	if err != nil {
 		t.Fatal(err)
 	}
-	var tr http.RoundTripper = debugTransport{NewTransport(ReceiveTimeout, endpoint.IsSecure), t.Log}
+	var tr http.RoundTripper = debugTransport{NewTransport(nil), t.Log}
 	tr = transport.NewTransport(AuthTransport(tr, authConfig, false), DockerHeaders(nil)...)
 	client := HTTPClient(tr)
 	r, err := NewSession(client, authConfig, endpoint)
@@ -332,7 +332,7 @@ func TestParseRepositoryInfo(t *testing.T) {
 	expectedRepoInfos := map[string]RepositoryInfo{
 		"fooo/bar": {
 			Index: &IndexInfo{
-				Name:     IndexServerName(),
+				Name:     INDEXNAME,
 				Official: true,
 			},
 			RemoteName:    "fooo/bar",
@@ -342,7 +342,7 @@ func TestParseRepositoryInfo(t *testing.T) {
 		},
 		"library/ubuntu": {
 			Index: &IndexInfo{
-				Name:     IndexServerName(),
+				Name:     INDEXNAME,
 				Official: true,
 			},
 			RemoteName:    "library/ubuntu",
@@ -352,7 +352,7 @@ func TestParseRepositoryInfo(t *testing.T) {
 		},
 		"nonlibrary/ubuntu": {
 			Index: &IndexInfo{
-				Name:     IndexServerName(),
+				Name:     INDEXNAME,
 				Official: true,
 			},
 			RemoteName:    "nonlibrary/ubuntu",
@@ -362,7 +362,7 @@ func TestParseRepositoryInfo(t *testing.T) {
 		},
 		"ubuntu": {
 			Index: &IndexInfo{
-				Name:     IndexServerName(),
+				Name:     INDEXNAME,
 				Official: true,
 			},
 			RemoteName:    "library/ubuntu",
@@ -372,7 +372,7 @@ func TestParseRepositoryInfo(t *testing.T) {
 		},
 		"other/library": {
 			Index: &IndexInfo{
-				Name:     IndexServerName(),
+				Name:     INDEXNAME,
 				Official: true,
 			},
 			RemoteName:    "other/library",
@@ -480,9 +480,9 @@ func TestParseRepositoryInfo(t *testing.T) {
 			CanonicalName: "localhost/privatebase",
 			Official:      false,
 		},
-		IndexServerName() + "/public/moonbase": {
+		INDEXNAME + "/public/moonbase": {
 			Index: &IndexInfo{
-				Name:     IndexServerName(),
+				Name:     INDEXNAME,
 				Official: true,
 			},
 			RemoteName:    "public/moonbase",
@@ -490,19 +490,9 @@ func TestParseRepositoryInfo(t *testing.T) {
 			CanonicalName: "docker.io/public/moonbase",
 			Official:      false,
 		},
-		"index." + IndexServerName() + "/public/moonbase": {
+		"index." + INDEXNAME + "/public/moonbase": {
 			Index: &IndexInfo{
-				Name:     IndexServerName(),
+				Name:     INDEXNAME,
-				Official: true,
-			},
-			RemoteName:    "public/moonbase",
-			LocalName:     "public/moonbase",
-			CanonicalName: "docker.io/public/moonbase",
-			Official:      false,
-		},
-		IndexServerName() + "/public/moonbase": {
-			Index: &IndexInfo{
-				Name:     IndexServerName(),
 				Official: true,
 			},
 			RemoteName:    "public/moonbase",
@@ -512,7 +502,7 @@ func TestParseRepositoryInfo(t *testing.T) {
 		},
 		"ubuntu-12.04-base": {
 			Index: &IndexInfo{
-				Name:     IndexServerName(),
+				Name:     INDEXNAME,
 				Official: true,
 			},
 			RemoteName:    "library/ubuntu-12.04-base",
@@ -520,9 +510,9 @@ func TestParseRepositoryInfo(t *testing.T) {
 			CanonicalName: "docker.io/library/ubuntu-12.04-base",
 			Official:      true,
 		},
-		IndexServerName() + "/ubuntu-12.04-base": {
+		INDEXNAME + "/ubuntu-12.04-base": {
 			Index: &IndexInfo{
-				Name:     IndexServerName(),
+				Name:     INDEXNAME,
 				Official: true,
 			},
 			RemoteName:    "library/ubuntu-12.04-base",
@@ -530,19 +520,9 @@ func TestParseRepositoryInfo(t *testing.T) {
 			CanonicalName: "docker.io/library/ubuntu-12.04-base",
 			Official:      true,
 		},
-		IndexServerName() + "/ubuntu-12.04-base": {
+		"index." + INDEXNAME + "/ubuntu-12.04-base": {
 			Index: &IndexInfo{
-				Name:     IndexServerName(),
+				Name:     INDEXNAME,
-				Official: true,
-			},
-			RemoteName:    "library/ubuntu-12.04-base",
-			LocalName:     "ubuntu-12.04-base",
-			CanonicalName: "docker.io/library/ubuntu-12.04-base",
-			Official:      true,
-		},
-		"index." + IndexServerName() + "/ubuntu-12.04-base": {
-			Index: &IndexInfo{
-				Name:     IndexServerName(),
 				Official: true,
 			},
 			RemoteName:    "library/ubuntu-12.04-base",
@@ -585,14 +565,14 @@ func TestNewIndexInfo(t *testing.T) {
 	config := NewServiceConfig(nil)
 	noMirrors := make([]string, 0)
 	expectedIndexInfos := map[string]*IndexInfo{
-		IndexServerName(): {
+		INDEXNAME: {
-			Name:     IndexServerName(),
+			Name:     INDEXNAME,
 			Official: true,
 			Secure:   true,
 			Mirrors:  noMirrors,
 		},
-		"index." + IndexServerName(): {
+		"index." + INDEXNAME: {
-			Name:     IndexServerName(),
+			Name:     INDEXNAME,
 			Official: true,
 			Secure:   true,
 			Mirrors:  noMirrors,
@@ -616,14 +596,14 @@ func TestNewIndexInfo(t *testing.T) {
 	config = makeServiceConfig(publicMirrors, []string{"example.com"})
 
 	expectedIndexInfos = map[string]*IndexInfo{
-		IndexServerName(): {
+		INDEXNAME: {
-			Name:     IndexServerName(),
+			Name:     INDEXNAME,
 			Official: true,
 			Secure:   true,
 			Mirrors:  publicMirrors,
 		},
-		"index." + IndexServerName(): {
+		"index." + INDEXNAME: {
-			Name:     IndexServerName(),
+			Name:     INDEXNAME,
 			Official: true,
 			Secure:   true,
 			Mirrors:  publicMirrors,
@@ -880,7 +860,7 @@ func TestIsSecureIndex(t *testing.T) {
 		insecureRegistries []string
 		expected           bool
 	}{
-		{IndexServerName(), nil, true},
+		{INDEXNAME, nil, true},
 		{"example.com", []string{}, true},
 		{"example.com", []string{"example.com"}, false},
 		{"localhost", []string{"localhost:5000"}, false},

docs/service.go

@@ -1,9 +1,19 @@
 package registry
 
 import (
+	"crypto/tls"
+	"crypto/x509"
+	"fmt"
+	"io/ioutil"
 	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
 
+	"github.com/Sirupsen/logrus"
+	"github.com/docker/distribution/registry/client/auth"
 	"github.com/docker/docker/cliconfig"
+	"github.com/docker/docker/pkg/tlsconfig"
 )
 
 type Service struct {
@@ -25,7 +35,7 @@ func (s *Service) Auth(authConfig *cliconfig.AuthConfig) (string, error) {
 	addr := authConfig.ServerAddress
 	if addr == "" {
 		// Use the official registry address if not specified.
-		addr = IndexServerAddress()
+		addr = INDEXSERVER
 	}
 	index, err := s.ResolveIndex(addr)
 	if err != nil {
@@ -69,3 +79,186 @@ func (s *Service) ResolveRepository(name string) (*RepositoryInfo, error) {
 func (s *Service) ResolveIndex(name string) (*IndexInfo, error) {
 	return s.Config.NewIndexInfo(name)
 }
+
+type APIEndpoint struct {
+	Mirror        bool
+	URL           string
+	Version       APIVersion
+	Official      bool
+	TrimHostname  bool
+	TLSConfig     *tls.Config
+	VersionHeader string
+	Versions      []auth.APIVersion
+}
+
+func (e APIEndpoint) ToV1Endpoint(metaHeaders http.Header) (*Endpoint, error) {
+	return newEndpoint(e.URL, e.TLSConfig, metaHeaders)
+}
+
+func (s *Service) TlsConfig(hostname string) (*tls.Config, error) {
+	// we construct a client tls config from server defaults
+	// PreferredServerCipherSuites should have no effect
+	tlsConfig := tlsconfig.ServerDefault
+
+	isSecure := s.Config.isSecureIndex(hostname)
+
+	tlsConfig.InsecureSkipVerify = !isSecure
+
+	if isSecure {
+		hasFile := func(files []os.FileInfo, name string) bool {
+			for _, f := range files {
+				if f.Name() == name {
+					return true
+				}
+			}
+			return false
+		}
+
+		hostDir := filepath.Join(CERTS_DIR, hostname)
+		logrus.Debugf("hostDir: %s", hostDir)
+		fs, err := ioutil.ReadDir(hostDir)
+		if err != nil && !os.IsNotExist(err) {
+			return nil, err
+		}
+
+		for _, f := range fs {
+			if strings.HasSuffix(f.Name(), ".crt") {
+				if tlsConfig.RootCAs == nil {
+					// TODO(dmcgowan): Copy system pool
+					tlsConfig.RootCAs = x509.NewCertPool()
+				}
+				logrus.Debugf("crt: %s", filepath.Join(hostDir, f.Name()))
+				data, err := ioutil.ReadFile(filepath.Join(hostDir, f.Name()))
+				if err != nil {
+					return nil, err
+				}
+				tlsConfig.RootCAs.AppendCertsFromPEM(data)
+			}
+			if strings.HasSuffix(f.Name(), ".cert") {
+				certName := f.Name()
+				keyName := certName[:len(certName)-5] + ".key"
+				logrus.Debugf("cert: %s", filepath.Join(hostDir, f.Name()))
+				if !hasFile(fs, keyName) {
+					return nil, fmt.Errorf("Missing key %s for certificate %s", keyName, certName)
+				}
+				cert, err := tls.LoadX509KeyPair(filepath.Join(hostDir, certName), filepath.Join(hostDir, keyName))
+				if err != nil {
+					return nil, err
+				}
+				tlsConfig.Certificates = append(tlsConfig.Certificates, cert)
+			}
+			if strings.HasSuffix(f.Name(), ".key") {
+				keyName := f.Name()
+				certName := keyName[:len(keyName)-4] + ".cert"
+				logrus.Debugf("key: %s", filepath.Join(hostDir, f.Name()))
+				if !hasFile(fs, certName) {
+					return nil, fmt.Errorf("Missing certificate %s for key %s", certName, keyName)
+				}
+			}
+		}
+	}
+
+	return &tlsConfig, nil
+}
+
+func (s *Service) LookupEndpoints(repoName string) (endpoints []APIEndpoint, err error) {
+	var cfg = tlsconfig.ServerDefault
+	tlsConfig := &cfg
+	if strings.HasPrefix(repoName, DEFAULT_NAMESPACE+"/") {
+		// v2 mirrors
+		for _, mirror := range s.Config.Mirrors {
+			endpoints = append(endpoints, APIEndpoint{
+				URL: mirror,
+				// guess mirrors are v2
+				Version:      APIVersion2,
+				Mirror:       true,
+				TrimHostname: true,
+				TLSConfig:    tlsConfig,
+			})
+		}
+		// v2 registry
+		endpoints = append(endpoints, APIEndpoint{
+			URL:          DEFAULT_V2_REGISTRY,
+			Version:      APIVersion2,
+			Official:     true,
+			TrimHostname: true,
+			TLSConfig:    tlsConfig,
+		})
+		// v1 mirrors
+		// TODO(tiborvass): shouldn't we remove v1 mirrors from here, since v1 mirrors are kinda special?
+		for _, mirror := range s.Config.Mirrors {
+			endpoints = append(endpoints, APIEndpoint{
+				URL: mirror,
+				// guess mirrors are v1
+				Version:      APIVersion1,
+				Mirror:       true,
+				TrimHostname: true,
+				TLSConfig:    tlsConfig,
+			})
+		}
+		// v1 registry
+		endpoints = append(endpoints, APIEndpoint{
+			URL:          DEFAULT_V1_REGISTRY,
+			Version:      APIVersion1,
+			Official:     true,
+			TrimHostname: true,
+			TLSConfig:    tlsConfig,
+		})
+		return endpoints, nil
+	}
+
+	slashIndex := strings.IndexRune(repoName, '/')
+	if slashIndex <= 0 {
+		return nil, fmt.Errorf("invalid repo name: missing '/':  %s", repoName)
+	}
+	hostname := repoName[:slashIndex]
+
+	tlsConfig, err = s.TlsConfig(hostname)
+	if err != nil {
+		return nil, err
+	}
+	isSecure := !tlsConfig.InsecureSkipVerify
+
+	v2Versions := []auth.APIVersion{
+		{
+			Type:    "registry",
+			Version: "2.0",
+		},
+	}
+	endpoints = []APIEndpoint{
+		{
+			URL:           "https://" + hostname,
+			Version:       APIVersion2,
+			TrimHostname:  true,
+			TLSConfig:     tlsConfig,
+			VersionHeader: DEFAULT_REGISTRY_VERSION_HEADER,
+			Versions:      v2Versions,
+		},
+		{
+			URL:          "https://" + hostname,
+			Version:      APIVersion1,
+			TrimHostname: true,
+			TLSConfig:    tlsConfig,
+		},
+	}
+
+	if !isSecure {
+		endpoints = append(endpoints, APIEndpoint{
+			URL:          "http://" + hostname,
+			Version:      APIVersion2,
+			TrimHostname: true,
+			// used to check if supposed to be secure via InsecureSkipVerify
+			TLSConfig:     tlsConfig,
+			VersionHeader: DEFAULT_REGISTRY_VERSION_HEADER,
+			Versions:      v2Versions,
+		}, APIEndpoint{
+			URL:          "http://" + hostname,
+			Version:      APIVersion1,
+			TrimHostname: true,
+			// used to check if supposed to be secure via InsecureSkipVerify
+			TLSConfig: tlsConfig,
+		})
+	}
+
+	return endpoints, nil
+}

docs/session.go

@@ -98,7 +98,7 @@ func (tr *authTransport) RoundTrip(orig *http.Request) (*http.Response, error) {
 		return tr.RoundTripper.RoundTrip(orig)
 	}
 
-	req := transport.CloneRequest(orig)
+	req := cloneRequest(orig)
 	tr.mu.Lock()
 	tr.modReq[orig] = req
 	tr.mu.Unlock()
@@ -164,12 +164,11 @@ func NewSession(client *http.Client, authConfig *cliconfig.AuthConfig, endpoint
 
 	// If we're working with a standalone private registry over HTTPS, send Basic Auth headers
 	// alongside all our requests.
-	if endpoint.VersionString(1) != IndexServerAddress() && endpoint.URL.Scheme == "https" {
+	if endpoint.VersionString(1) != INDEXSERVER && endpoint.URL.Scheme == "https" {
 		info, err := endpoint.Ping()
 		if err != nil {
 			return nil, err
 		}
-
 		if info.Standalone && authConfig != nil {
 			logrus.Debugf("Endpoint %s is eligible for private registry. Enabling decorator.", endpoint.String())
 			alwaysSetBasicAuth = true
@@ -265,7 +264,7 @@ func (r *Session) GetRemoteImageLayer(imgID, registry string, imgSize int64) (io
 	if err != nil {
 		return nil, fmt.Errorf("Error while getting from the server: %v", err)
 	}
-	// TODO: why are we doing retries at this level?
+	// TODO(tiborvass): why are we doing retries at this level?
 	// These retries should be generic to both v1 and v2
 	for i := 1; i <= retries; i++ {
 		statusCode = 0
@@ -432,7 +431,7 @@ func (r *Session) GetRepositoryData(remote string) (*RepositoryData, error) {
 	}
 
 	// Forge a better object from the retrieved data
-	imgsData := make(map[string]*ImgData)
+	imgsData := make(map[string]*ImgData, len(remoteChecksums))
 	for _, elem := range remoteChecksums {
 		imgsData[elem.ID] = elem
 	}

docs/session_v2.go

@@ -1,414 +0,0 @@
-package registry
-
-import (
-	"bytes"
-	"encoding/json"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"net/http"
-	"strconv"
-
-	"github.com/Sirupsen/logrus"
-	"github.com/docker/distribution/digest"
-	"github.com/docker/distribution/registry/api/v2"
-	"github.com/docker/docker/pkg/httputils"
-)
-
-const DockerDigestHeader = "Docker-Content-Digest"
-
-func getV2Builder(e *Endpoint) *v2.URLBuilder {
-	if e.URLBuilder == nil {
-		e.URLBuilder = v2.NewURLBuilder(e.URL)
-	}
-	return e.URLBuilder
-}
-
-func (r *Session) V2RegistryEndpoint(index *IndexInfo) (ep *Endpoint, err error) {
-	// TODO check if should use Mirror
-	if index.Official {
-		ep, err = newEndpoint(REGISTRYSERVER, true, nil)
-		if err != nil {
-			return
-		}
-		err = validateEndpoint(ep)
-		if err != nil {
-			return
-		}
-	} else if r.indexEndpoint.String() == index.GetAuthConfigKey() {
-		ep = r.indexEndpoint
-	} else {
-		ep, err = NewEndpoint(index, nil)
-		if err != nil {
-			return
-		}
-	}
-
-	ep.URLBuilder = v2.NewURLBuilder(ep.URL)
-	return
-}
-
-// GetV2Authorization gets the authorization needed to the given image
-// If readonly access is requested, then the authorization may
-// only be used for Get operations.
-func (r *Session) GetV2Authorization(ep *Endpoint, imageName string, readOnly bool) (auth *RequestAuthorization, err error) {
-	scopes := []string{"pull"}
-	if !readOnly {
-		scopes = append(scopes, "push")
-	}
-
-	logrus.Debugf("Getting authorization for %s %s", imageName, scopes)
-	return NewRequestAuthorization(r.GetAuthConfig(true), ep, "repository", imageName, scopes), nil
-}
-
-//
-// 1) Check if TarSum of each layer exists /v2/
-//  1.a) if 200, continue
-//  1.b) if 300, then push the
-//  1.c) if anything else, err
-// 2) PUT the created/signed manifest
-//
-
-// GetV2ImageManifest simply fetches the bytes of a manifest and the remote
-// digest, if available in the request. Note that the application shouldn't
-// rely on the untrusted remoteDigest, and should also verify against a
-// locally provided digest, if applicable.
-func (r *Session) GetV2ImageManifest(ep *Endpoint, imageName, tagName string, auth *RequestAuthorization) (remoteDigest digest.Digest, p []byte, err error) {
-	routeURL, err := getV2Builder(ep).BuildManifestURL(imageName, tagName)
-	if err != nil {
-		return "", nil, err
-	}
-
-	method := "GET"
-	logrus.Debugf("[registry] Calling %q %s", method, routeURL)
-
-	req, err := http.NewRequest(method, routeURL, nil)
-	if err != nil {
-		return "", nil, err
-	}
-
-	if err := auth.Authorize(req); err != nil {
-		return "", nil, err
-	}
-
-	res, err := r.client.Do(req)
-	if err != nil {
-		return "", nil, err
-	}
-	defer res.Body.Close()
-
-	if res.StatusCode != 200 {
-		if res.StatusCode == 401 {
-			return "", nil, errLoginRequired
-		} else if res.StatusCode == 404 {
-			return "", nil, ErrDoesNotExist
-		}
-		return "", nil, httputils.NewHTTPRequestError(fmt.Sprintf("Server error: %d trying to fetch for %s:%s", res.StatusCode, imageName, tagName), res)
-	}
-
-	p, err = ioutil.ReadAll(res.Body)
-	if err != nil {
-		return "", nil, fmt.Errorf("Error while reading the http response: %s", err)
-	}
-
-	dgstHdr := res.Header.Get(DockerDigestHeader)
-	if dgstHdr != "" {
-		remoteDigest, err = digest.ParseDigest(dgstHdr)
-		if err != nil {
-			// NOTE(stevvooe): Including the remote digest is optional. We
-			// don't need to verify against it, but it is good practice.
-			remoteDigest = ""
-			logrus.Debugf("error parsing remote digest when fetching %v: %v", routeURL, err)
-		}
-	}
-
-	return
-}
-
-// - Succeeded to head image blob (already exists)
-// - Failed with no error (continue to Push the Blob)
-// - Failed with error
-func (r *Session) HeadV2ImageBlob(ep *Endpoint, imageName string, dgst digest.Digest, auth *RequestAuthorization) (bool, error) {
-	routeURL, err := getV2Builder(ep).BuildBlobURL(imageName, dgst)
-	if err != nil {
-		return false, err
-	}
-
-	method := "HEAD"
-	logrus.Debugf("[registry] Calling %q %s", method, routeURL)
-
-	req, err := http.NewRequest(method, routeURL, nil)
-	if err != nil {
-		return false, err
-	}
-	if err := auth.Authorize(req); err != nil {
-		return false, err
-	}
-	res, err := r.client.Do(req)
-	if err != nil {
-		return false, err
-	}
-	res.Body.Close() // close early, since we're not needing a body on this call .. yet?
-	switch {
-	case res.StatusCode >= 200 && res.StatusCode < 400:
-		// return something indicating no push needed
-		return true, nil
-	case res.StatusCode == 401:
-		return false, errLoginRequired
-	case res.StatusCode == 404:
-		// return something indicating blob push needed
-		return false, nil
-	}
-
-	return false, httputils.NewHTTPRequestError(fmt.Sprintf("Server error: %d trying head request for %s - %s", res.StatusCode, imageName, dgst), res)
-}
-
-func (r *Session) GetV2ImageBlob(ep *Endpoint, imageName string, dgst digest.Digest, blobWrtr io.Writer, auth *RequestAuthorization) error {
-	routeURL, err := getV2Builder(ep).BuildBlobURL(imageName, dgst)
-	if err != nil {
-		return err
-	}
-
-	method := "GET"
-	logrus.Debugf("[registry] Calling %q %s", method, routeURL)
-	req, err := http.NewRequest(method, routeURL, nil)
-	if err != nil {
-		return err
-	}
-	if err := auth.Authorize(req); err != nil {
-		return err
-	}
-	res, err := r.client.Do(req)
-	if err != nil {
-		return err
-	}
-	defer res.Body.Close()
-	if res.StatusCode != 200 {
-		if res.StatusCode == 401 {
-			return errLoginRequired
-		}
-		return httputils.NewHTTPRequestError(fmt.Sprintf("Server error: %d trying to pull %s blob", res.StatusCode, imageName), res)
-	}
-
-	_, err = io.Copy(blobWrtr, res.Body)
-	return err
-}
-
-func (r *Session) GetV2ImageBlobReader(ep *Endpoint, imageName string, dgst digest.Digest, auth *RequestAuthorization) (io.ReadCloser, int64, error) {
-	routeURL, err := getV2Builder(ep).BuildBlobURL(imageName, dgst)
-	if err != nil {
-		return nil, 0, err
-	}
-
-	method := "GET"
-	logrus.Debugf("[registry] Calling %q %s", method, routeURL)
-	req, err := http.NewRequest(method, routeURL, nil)
-	if err != nil {
-		return nil, 0, err
-	}
-	if err := auth.Authorize(req); err != nil {
-		return nil, 0, err
-	}
-	res, err := r.client.Do(req)
-	if err != nil {
-		return nil, 0, err
-	}
-	if res.StatusCode != 200 {
-		if res.StatusCode == 401 {
-			return nil, 0, errLoginRequired
-		}
-		return nil, 0, httputils.NewHTTPRequestError(fmt.Sprintf("Server error: %d trying to pull %s blob - %s", res.StatusCode, imageName, dgst), res)
-	}
-	lenStr := res.Header.Get("Content-Length")
-	l, err := strconv.ParseInt(lenStr, 10, 64)
-	if err != nil {
-		return nil, 0, err
-	}
-
-	return res.Body, l, err
-}
-
-// Push the image to the server for storage.
-// 'layer' is an uncompressed reader of the blob to be pushed.
-// The server will generate it's own checksum calculation.
-func (r *Session) PutV2ImageBlob(ep *Endpoint, imageName string, dgst digest.Digest, blobRdr io.Reader, auth *RequestAuthorization) error {
-	location, err := r.initiateBlobUpload(ep, imageName, auth)
-	if err != nil {
-		return err
-	}
-
-	method := "PUT"
-	logrus.Debugf("[registry] Calling %q %s", method, location)
-	req, err := http.NewRequest(method, location, ioutil.NopCloser(blobRdr))
-	if err != nil {
-		return err
-	}
-	queryParams := req.URL.Query()
-	queryParams.Add("digest", dgst.String())
-	req.URL.RawQuery = queryParams.Encode()
-	if err := auth.Authorize(req); err != nil {
-		return err
-	}
-	res, err := r.client.Do(req)
-	if err != nil {
-		return err
-	}
-	defer res.Body.Close()
-
-	if res.StatusCode != 201 {
-		if res.StatusCode == 401 {
-			return errLoginRequired
-		}
-		errBody, err := ioutil.ReadAll(res.Body)
-		if err != nil {
-			return err
-		}
-		logrus.Debugf("Unexpected response from server: %q %#v", errBody, res.Header)
-		return httputils.NewHTTPRequestError(fmt.Sprintf("Server error: %d trying to push %s blob - %s", res.StatusCode, imageName, dgst), res)
-	}
-
-	return nil
-}
-
-// initiateBlobUpload gets the blob upload location for the given image name.
-func (r *Session) initiateBlobUpload(ep *Endpoint, imageName string, auth *RequestAuthorization) (location string, err error) {
-	routeURL, err := getV2Builder(ep).BuildBlobUploadURL(imageName)
-	if err != nil {
-		return "", err
-	}
-
-	logrus.Debugf("[registry] Calling %q %s", "POST", routeURL)
-	req, err := http.NewRequest("POST", routeURL, nil)
-	if err != nil {
-		return "", err
-	}
-
-	if err := auth.Authorize(req); err != nil {
-		return "", err
-	}
-	res, err := r.client.Do(req)
-	if err != nil {
-		return "", err
-	}
-
-	if res.StatusCode != http.StatusAccepted {
-		if res.StatusCode == http.StatusUnauthorized {
-			return "", errLoginRequired
-		}
-		if res.StatusCode == http.StatusNotFound {
-			return "", ErrDoesNotExist
-		}
-
-		errBody, err := ioutil.ReadAll(res.Body)
-		if err != nil {
-			return "", err
-		}
-
-		logrus.Debugf("Unexpected response from server: %q %#v", errBody, res.Header)
-		return "", httputils.NewHTTPRequestError(fmt.Sprintf("Server error: unexpected %d response status trying to initiate upload of %s", res.StatusCode, imageName), res)
-	}
-
-	if location = res.Header.Get("Location"); location == "" {
-		return "", fmt.Errorf("registry did not return a Location header for resumable blob upload for image %s", imageName)
-	}
-
-	return
-}
-
-// Finally Push the (signed) manifest of the blobs we've just pushed
-func (r *Session) PutV2ImageManifest(ep *Endpoint, imageName, tagName string, signedManifest, rawManifest []byte, auth *RequestAuthorization) (digest.Digest, error) {
-	routeURL, err := getV2Builder(ep).BuildManifestURL(imageName, tagName)
-	if err != nil {
-		return "", err
-	}
-
-	method := "PUT"
-	logrus.Debugf("[registry] Calling %q %s", method, routeURL)
-	req, err := http.NewRequest(method, routeURL, bytes.NewReader(signedManifest))
-	if err != nil {
-		return "", err
-	}
-	if err := auth.Authorize(req); err != nil {
-		return "", err
-	}
-	res, err := r.client.Do(req)
-	if err != nil {
-		return "", err
-	}
-	defer res.Body.Close()
-
-	// All 2xx and 3xx responses can be accepted for a put.
-	if res.StatusCode >= 400 {
-		if res.StatusCode == 401 {
-			return "", errLoginRequired
-		}
-		errBody, err := ioutil.ReadAll(res.Body)
-		if err != nil {
-			return "", err
-		}
-		logrus.Debugf("Unexpected response from server: %q %#v", errBody, res.Header)
-		return "", httputils.NewHTTPRequestError(fmt.Sprintf("Server error: %d trying to push %s:%s manifest", res.StatusCode, imageName, tagName), res)
-	}
-
-	hdrDigest, err := digest.ParseDigest(res.Header.Get(DockerDigestHeader))
-	if err != nil {
-		return "", fmt.Errorf("invalid manifest digest from registry: %s", err)
-	}
-
-	dgstVerifier, err := digest.NewDigestVerifier(hdrDigest)
-	if err != nil {
-		return "", fmt.Errorf("invalid manifest digest from registry: %s", err)
-	}
-
-	dgstVerifier.Write(rawManifest)
-
-	if !dgstVerifier.Verified() {
-		computedDigest, _ := digest.FromBytes(rawManifest)
-		return "", fmt.Errorf("unable to verify manifest digest: registry has %q, computed %q", hdrDigest, computedDigest)
-	}
-
-	return hdrDigest, nil
-}
-
-type remoteTags struct {
-	Name string   `json:"name"`
-	Tags []string `json:"tags"`
-}
-
-// Given a repository name, returns a json array of string tags
-func (r *Session) GetV2RemoteTags(ep *Endpoint, imageName string, auth *RequestAuthorization) ([]string, error) {
-	routeURL, err := getV2Builder(ep).BuildTagsURL(imageName)
-	if err != nil {
-		return nil, err
-	}
-
-	method := "GET"
-	logrus.Debugf("[registry] Calling %q %s", method, routeURL)
-
-	req, err := http.NewRequest(method, routeURL, nil)
-	if err != nil {
-		return nil, err
-	}
-	if err := auth.Authorize(req); err != nil {
-		return nil, err
-	}
-	res, err := r.client.Do(req)
-	if err != nil {
-		return nil, err
-	}
-	defer res.Body.Close()
-	if res.StatusCode != 200 {
-		if res.StatusCode == 401 {
-			return nil, errLoginRequired
-		} else if res.StatusCode == 404 {
-			return nil, ErrDoesNotExist
-		}
-		return nil, httputils.NewHTTPRequestError(fmt.Sprintf("Server error: %d trying to fetch for %s", res.StatusCode, imageName), res)
-	}
-
-	var remote remoteTags
-	if err := json.NewDecoder(res.Body).Decode(&remote); err != nil {
-		return nil, fmt.Errorf("Error while decoding the http response: %s", err)
-	}
-	return remote.Tags, nil
-}