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Merge pull request #33922 from ishidawataru/sctp

Support SCTP port mapping (bump up API to v1.37)
This commit is contained in:
Sebastiaan van Stijn 2018-02-20 17:00:13 +01:00 committed by GitHub
commit 079ed017b6
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
25 changed files with 1564 additions and 191 deletions

View file

@ -19,10 +19,10 @@ produces:
consumes:
- "application/json"
- "text/plain"
basePath: "/v1.36"
basePath: "/v1.37"
info:
title: "Docker Engine API"
version: "1.36"
version: "1.37"
x-logo:
url: "https://docs.docker.com/images/logo-docker-main.png"
description: |
@ -49,7 +49,7 @@ info:
the URL is not supported by the daemon, a HTTP `400 Bad Request` error message
is returned.
If you omit the version-prefix, the current version of the API (v1.36) is used.
If you omit the version-prefix, the current version of the API (v1.37) is used.
For example, calling `/info` is the same as calling `/v1.36/info`. Using the
API without a version-prefix is deprecated and will be removed in a future release.
@ -167,7 +167,7 @@ definitions:
Type:
type: "string"
x-nullable: false
enum: ["tcp", "udp"]
enum: ["tcp", "udp", "sctp"]
example:
PrivatePort: 8080
PublicPort: 80
@ -801,7 +801,7 @@ definitions:
description: |
An object mapping ports to an empty object in the form:
`{"<port>/<tcp|udp>": {}}`
`{"<port>/<tcp|udp|sctp>": {}}`
type: "object"
additionalProperties:
type: "object"
@ -1066,8 +1066,8 @@ definitions:
container's port-number and protocol as key in the format `<port>/<protocol>`,
for example, `80/udp`.
If a container's port is mapped for both `tcp` and `udp`, two separate
entries are added to the mapping table.
If a container's port is mapped for multiple protocols, separate entries
are added to the mapping table.
type: "object"
additionalProperties:
type: "array"
@ -3046,6 +3046,7 @@ definitions:
enum:
- "tcp"
- "udp"
- "sctp"
TargetPort:
description: "The port inside the container."
type: "integer"

View file

@ -62,6 +62,8 @@ const (
PortConfigProtocolTCP PortConfigProtocol = "tcp"
// PortConfigProtocolUDP UDP
PortConfigProtocolUDP PortConfigProtocol = "udp"
// PortConfigProtocolSCTP SCTP
PortConfigProtocolSCTP PortConfigProtocol = "sctp"
)
// EndpointVirtualIP represents the virtual ip of a port.

View file

@ -621,6 +621,8 @@ func parsePortMap(portMap nat.PortMap) ([]*api.PortConfig, error) {
protocol = api.ProtocolTCP
case "udp":
protocol = api.ProtocolUDP
case "sctp":
protocol = api.ProtocolSCTP
default:
return nil, fmt.Errorf("invalid protocol: %s", parts[1])
}

View file

@ -13,6 +13,12 @@ keywords: "API, Docker, rcli, REST, documentation"
will be rejected.
-->
## v1.37 API changes
[Docker Engine API v1.37](https://docs.docker.com/engine/api/v1.36/) documentation
* `POST /containers/create` and `POST /services/create` now supports exposing SCTP ports.
## v1.36 API changes
[Docker Engine API v1.36](https://docs.docker.com/engine/api/v1.36/) documentation

View file

@ -16,7 +16,7 @@ TINI_COMMIT=949e6facb77383876aeff8a6944dde66b3089574
# LIBNETWORK_COMMIT is used to build the docker-userland-proxy binary. When
# updating the binary version, consider updating github.com/docker/libnetwork
# in vendor.conf accordingly
LIBNETWORK_COMMIT=20dd462e0a0e883437a274bd61df4bc4de980830
LIBNETWORK_COMMIT=ed2130d117c11c542327b4d5216a5db36770bc65
VNDR_COMMIT=a6e196d8b4b0cbbdc29aebdb20c59ac6926bb384
# Linting

View file

@ -16,7 +16,7 @@ github.com/vdemeester/shakers 24d7f1d6a71aa5d9cbe7390e4afb66b7eef9e1b3
golang.org/x/net 7dcfb8076726a3fdd9353b6b8a1f1b6be6811bd6
golang.org/x/sys 37707fdb30a5b38865cfb95e5aab41707daec7fd
github.com/docker/go-units 9e638d38cf6977a37a8ea0078f3ee75a7cdb2dd1
github.com/docker/go-connections 98e7d807e5d804e4e42a98d74d1dd695321224ef
github.com/docker/go-connections 7beb39f0b969b075d1325fecb092faf27fd357b6
golang.org/x/text f72d8390a633d5dfb0cc84043294db9f6c935756
github.com/stretchr/testify 4d4bfba8f1d1027c4fdbe371823030df51419987
github.com/pmezard/go-difflib v1.0.0
@ -33,7 +33,7 @@ github.com/tonistiigi/fsutil dea3a0da73aee887fc02142d995be764106ac5e2
#get libnetwork packages
# When updating, also update LIBNETWORK_COMMIT in hack/dockerfile/binaries-commits accordingly
github.com/docker/libnetwork 20dd462e0a0e883437a274bd61df4bc4de980830
github.com/docker/libnetwork ed2130d117c11c542327b4d5216a5db36770bc65
github.com/docker/go-events 9461782956ad83b30282bf90e31fa6a70c255ba9
github.com/armon/go-radix e39d623f12e8e41c7b5529e9a9dd67a1e2261f80
github.com/armon/go-metrics eb0af217e5e9747e41dd5303755356b62d28e3ec
@ -57,6 +57,7 @@ github.com/ugorji/go f1f1a805ed361a0e078bb537e4ea78cd37dcf065
github.com/hashicorp/consul v0.5.2
github.com/boltdb/bolt fff57c100f4dea1905678da7e90d92429dff2904
github.com/miekg/dns 75e6e86cc601825c5dbcd4e0c209eab180997cd7
github.com/ishidawataru/sctp 07191f837fedd2f13d1ec7b5f885f0f3ec54b1cb
# get graph and distribution packages
github.com/docker/distribution edc3ab29cdff8694dd6feb85cfeb4b5f1b38ed9c

View file

@ -113,7 +113,7 @@ func SplitProtoPort(rawPort string) (string, string) {
}
func validateProto(proto string) bool {
for _, availableProto := range []string{"tcp", "udp"} {
for _, availableProto := range []string{"tcp", "udp", "sctp"} {
if availableProto == proto {
return true
}

View file

@ -4,7 +4,6 @@ package tlsconfig
import (
"crypto/x509"
)
// SystemCertPool returns an new empty cert pool,

View file

@ -1,6 +1,5 @@
// Code generated by protoc-gen-gogo.
// Code generated by protoc-gen-gogo. DO NOT EDIT.
// source: agent.proto
// DO NOT EDIT!
/*
Package libnetwork is a generated protocol buffer package.
@ -20,9 +19,6 @@ import math "math"
import _ "github.com/gogo/protobuf/gogoproto"
import strings "strings"
import github_com_gogo_protobuf_proto "github.com/gogo/protobuf/proto"
import sort "sort"
import strconv "strconv"
import reflect "reflect"
import io "io"
@ -34,22 +30,27 @@ var _ = math.Inf
// This is a compile-time assertion to ensure that this generated file
// is compatible with the proto package it is being compiled against.
const _ = proto.GoGoProtoPackageIsVersion1
// A compilation error at this line likely means your copy of the
// proto package needs to be updated.
const _ = proto.GoGoProtoPackageIsVersion2 // please upgrade the proto package
type PortConfig_Protocol int32
const (
ProtocolTCP PortConfig_Protocol = 0
ProtocolUDP PortConfig_Protocol = 1
ProtocolTCP PortConfig_Protocol = 0
ProtocolUDP PortConfig_Protocol = 1
ProtocolSCTP PortConfig_Protocol = 2
)
var PortConfig_Protocol_name = map[int32]string{
0: "TCP",
1: "UDP",
2: "SCTP",
}
var PortConfig_Protocol_value = map[string]int32{
"TCP": 0,
"UDP": 1,
"TCP": 0,
"UDP": 1,
"SCTP": 2,
}
func (x PortConfig_Protocol) String() string {
@ -60,7 +61,7 @@ func (PortConfig_Protocol) EnumDescriptor() ([]byte, []int) { return fileDescrip
// EndpointRecord specifies all the endpoint specific information that
// needs to gossiped to nodes participating in the network.
type EndpointRecord struct {
// Name of the endpoint
// Name of the container
Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
// Service name of the service to which this endpoint belongs.
ServiceName string `protobuf:"bytes,2,opt,name=service_name,json=serviceName,proto3" json:"service_name,omitempty"`
@ -82,6 +83,41 @@ func (m *EndpointRecord) Reset() { *m = EndpointRecord{} }
func (*EndpointRecord) ProtoMessage() {}
func (*EndpointRecord) Descriptor() ([]byte, []int) { return fileDescriptorAgent, []int{0} }
func (m *EndpointRecord) GetName() string {
if m != nil {
return m.Name
}
return ""
}
func (m *EndpointRecord) GetServiceName() string {
if m != nil {
return m.ServiceName
}
return ""
}
func (m *EndpointRecord) GetServiceID() string {
if m != nil {
return m.ServiceID
}
return ""
}
func (m *EndpointRecord) GetVirtualIP() string {
if m != nil {
return m.VirtualIP
}
return ""
}
func (m *EndpointRecord) GetEndpointIP() string {
if m != nil {
return m.EndpointIP
}
return ""
}
func (m *EndpointRecord) GetIngressPorts() []*PortConfig {
if m != nil {
return m.IngressPorts
@ -89,6 +125,20 @@ func (m *EndpointRecord) GetIngressPorts() []*PortConfig {
return nil
}
func (m *EndpointRecord) GetAliases() []string {
if m != nil {
return m.Aliases
}
return nil
}
func (m *EndpointRecord) GetTaskAliases() []string {
if m != nil {
return m.TaskAliases
}
return nil
}
// PortConfig specifies an exposed port which can be
// addressed using the given name. This can be later queried
// using a service discovery api or a DNS SRV query. The node
@ -115,6 +165,34 @@ func (m *PortConfig) Reset() { *m = PortConfig{} }
func (*PortConfig) ProtoMessage() {}
func (*PortConfig) Descriptor() ([]byte, []int) { return fileDescriptorAgent, []int{1} }
func (m *PortConfig) GetName() string {
if m != nil {
return m.Name
}
return ""
}
func (m *PortConfig) GetProtocol() PortConfig_Protocol {
if m != nil {
return m.Protocol
}
return ProtocolTCP
}
func (m *PortConfig) GetTargetPort() uint32 {
if m != nil {
return m.TargetPort
}
return 0
}
func (m *PortConfig) GetPublishedPort() uint32 {
if m != nil {
return m.PublishedPort
}
return 0
}
func init() {
proto.RegisterType((*EndpointRecord)(nil), "libnetwork.EndpointRecord")
proto.RegisterType((*PortConfig)(nil), "libnetwork.PortConfig")
@ -160,74 +238,57 @@ func valueToGoStringAgent(v interface{}, typ string) string {
pv := reflect.Indirect(rv).Interface()
return fmt.Sprintf("func(v %v) *%v { return &v } ( %#v )", typ, typ, pv)
}
func extensionToGoStringAgent(e map[int32]github_com_gogo_protobuf_proto.Extension) string {
if e == nil {
return "nil"
}
s := "map[int32]proto.Extension{"
keys := make([]int, 0, len(e))
for k := range e {
keys = append(keys, int(k))
}
sort.Ints(keys)
ss := []string{}
for _, k := range keys {
ss = append(ss, strconv.Itoa(k)+": "+e[int32(k)].GoString())
}
s += strings.Join(ss, ",") + "}"
return s
}
func (m *EndpointRecord) Marshal() (data []byte, err error) {
func (m *EndpointRecord) Marshal() (dAtA []byte, err error) {
size := m.Size()
data = make([]byte, size)
n, err := m.MarshalTo(data)
dAtA = make([]byte, size)
n, err := m.MarshalTo(dAtA)
if err != nil {
return nil, err
}
return data[:n], nil
return dAtA[:n], nil
}
func (m *EndpointRecord) MarshalTo(data []byte) (int, error) {
func (m *EndpointRecord) MarshalTo(dAtA []byte) (int, error) {
var i int
_ = i
var l int
_ = l
if len(m.Name) > 0 {
data[i] = 0xa
dAtA[i] = 0xa
i++
i = encodeVarintAgent(data, i, uint64(len(m.Name)))
i += copy(data[i:], m.Name)
i = encodeVarintAgent(dAtA, i, uint64(len(m.Name)))
i += copy(dAtA[i:], m.Name)
}
if len(m.ServiceName) > 0 {
data[i] = 0x12
dAtA[i] = 0x12
i++
i = encodeVarintAgent(data, i, uint64(len(m.ServiceName)))
i += copy(data[i:], m.ServiceName)
i = encodeVarintAgent(dAtA, i, uint64(len(m.ServiceName)))
i += copy(dAtA[i:], m.ServiceName)
}
if len(m.ServiceID) > 0 {
data[i] = 0x1a
dAtA[i] = 0x1a
i++
i = encodeVarintAgent(data, i, uint64(len(m.ServiceID)))
i += copy(data[i:], m.ServiceID)
i = encodeVarintAgent(dAtA, i, uint64(len(m.ServiceID)))
i += copy(dAtA[i:], m.ServiceID)
}
if len(m.VirtualIP) > 0 {
data[i] = 0x22
dAtA[i] = 0x22
i++
i = encodeVarintAgent(data, i, uint64(len(m.VirtualIP)))
i += copy(data[i:], m.VirtualIP)
i = encodeVarintAgent(dAtA, i, uint64(len(m.VirtualIP)))
i += copy(dAtA[i:], m.VirtualIP)
}
if len(m.EndpointIP) > 0 {
data[i] = 0x2a
dAtA[i] = 0x2a
i++
i = encodeVarintAgent(data, i, uint64(len(m.EndpointIP)))
i += copy(data[i:], m.EndpointIP)
i = encodeVarintAgent(dAtA, i, uint64(len(m.EndpointIP)))
i += copy(dAtA[i:], m.EndpointIP)
}
if len(m.IngressPorts) > 0 {
for _, msg := range m.IngressPorts {
data[i] = 0x32
dAtA[i] = 0x32
i++
i = encodeVarintAgent(data, i, uint64(msg.Size()))
n, err := msg.MarshalTo(data[i:])
i = encodeVarintAgent(dAtA, i, uint64(msg.Size()))
n, err := msg.MarshalTo(dAtA[i:])
if err != nil {
return 0, err
}
@ -236,101 +297,101 @@ func (m *EndpointRecord) MarshalTo(data []byte) (int, error) {
}
if len(m.Aliases) > 0 {
for _, s := range m.Aliases {
data[i] = 0x3a
dAtA[i] = 0x3a
i++
l = len(s)
for l >= 1<<7 {
data[i] = uint8(uint64(l)&0x7f | 0x80)
dAtA[i] = uint8(uint64(l)&0x7f | 0x80)
l >>= 7
i++
}
data[i] = uint8(l)
dAtA[i] = uint8(l)
i++
i += copy(data[i:], s)
i += copy(dAtA[i:], s)
}
}
if len(m.TaskAliases) > 0 {
for _, s := range m.TaskAliases {
data[i] = 0x42
dAtA[i] = 0x42
i++
l = len(s)
for l >= 1<<7 {
data[i] = uint8(uint64(l)&0x7f | 0x80)
dAtA[i] = uint8(uint64(l)&0x7f | 0x80)
l >>= 7
i++
}
data[i] = uint8(l)
dAtA[i] = uint8(l)
i++
i += copy(data[i:], s)
i += copy(dAtA[i:], s)
}
}
return i, nil
}
func (m *PortConfig) Marshal() (data []byte, err error) {
func (m *PortConfig) Marshal() (dAtA []byte, err error) {
size := m.Size()
data = make([]byte, size)
n, err := m.MarshalTo(data)
dAtA = make([]byte, size)
n, err := m.MarshalTo(dAtA)
if err != nil {
return nil, err
}
return data[:n], nil
return dAtA[:n], nil
}
func (m *PortConfig) MarshalTo(data []byte) (int, error) {
func (m *PortConfig) MarshalTo(dAtA []byte) (int, error) {
var i int
_ = i
var l int
_ = l
if len(m.Name) > 0 {
data[i] = 0xa
dAtA[i] = 0xa
i++
i = encodeVarintAgent(data, i, uint64(len(m.Name)))
i += copy(data[i:], m.Name)
i = encodeVarintAgent(dAtA, i, uint64(len(m.Name)))
i += copy(dAtA[i:], m.Name)
}
if m.Protocol != 0 {
data[i] = 0x10
dAtA[i] = 0x10
i++
i = encodeVarintAgent(data, i, uint64(m.Protocol))
i = encodeVarintAgent(dAtA, i, uint64(m.Protocol))
}
if m.TargetPort != 0 {
data[i] = 0x18
dAtA[i] = 0x18
i++
i = encodeVarintAgent(data, i, uint64(m.TargetPort))
i = encodeVarintAgent(dAtA, i, uint64(m.TargetPort))
}
if m.PublishedPort != 0 {
data[i] = 0x20
dAtA[i] = 0x20
i++
i = encodeVarintAgent(data, i, uint64(m.PublishedPort))
i = encodeVarintAgent(dAtA, i, uint64(m.PublishedPort))
}
return i, nil
}
func encodeFixed64Agent(data []byte, offset int, v uint64) int {
data[offset] = uint8(v)
data[offset+1] = uint8(v >> 8)
data[offset+2] = uint8(v >> 16)
data[offset+3] = uint8(v >> 24)
data[offset+4] = uint8(v >> 32)
data[offset+5] = uint8(v >> 40)
data[offset+6] = uint8(v >> 48)
data[offset+7] = uint8(v >> 56)
func encodeFixed64Agent(dAtA []byte, offset int, v uint64) int {
dAtA[offset] = uint8(v)
dAtA[offset+1] = uint8(v >> 8)
dAtA[offset+2] = uint8(v >> 16)
dAtA[offset+3] = uint8(v >> 24)
dAtA[offset+4] = uint8(v >> 32)
dAtA[offset+5] = uint8(v >> 40)
dAtA[offset+6] = uint8(v >> 48)
dAtA[offset+7] = uint8(v >> 56)
return offset + 8
}
func encodeFixed32Agent(data []byte, offset int, v uint32) int {
data[offset] = uint8(v)
data[offset+1] = uint8(v >> 8)
data[offset+2] = uint8(v >> 16)
data[offset+3] = uint8(v >> 24)
func encodeFixed32Agent(dAtA []byte, offset int, v uint32) int {
dAtA[offset] = uint8(v)
dAtA[offset+1] = uint8(v >> 8)
dAtA[offset+2] = uint8(v >> 16)
dAtA[offset+3] = uint8(v >> 24)
return offset + 4
}
func encodeVarintAgent(data []byte, offset int, v uint64) int {
func encodeVarintAgent(dAtA []byte, offset int, v uint64) int {
for v >= 1<<7 {
data[offset] = uint8(v&0x7f | 0x80)
dAtA[offset] = uint8(v&0x7f | 0x80)
v >>= 7
offset++
}
data[offset] = uint8(v)
dAtA[offset] = uint8(v)
return offset + 1
}
func (m *EndpointRecord) Size() (n int) {
@ -447,8 +508,8 @@ func valueToStringAgent(v interface{}) string {
pv := reflect.Indirect(rv).Interface()
return fmt.Sprintf("*%v", pv)
}
func (m *EndpointRecord) Unmarshal(data []byte) error {
l := len(data)
func (m *EndpointRecord) Unmarshal(dAtA []byte) error {
l := len(dAtA)
iNdEx := 0
for iNdEx < l {
preIndex := iNdEx
@ -460,7 +521,7 @@ func (m *EndpointRecord) Unmarshal(data []byte) error {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
b := dAtA[iNdEx]
iNdEx++
wire |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
@ -488,7 +549,7 @@ func (m *EndpointRecord) Unmarshal(data []byte) error {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
b := dAtA[iNdEx]
iNdEx++
stringLen |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
@ -503,7 +564,7 @@ func (m *EndpointRecord) Unmarshal(data []byte) error {
if postIndex > l {
return io.ErrUnexpectedEOF
}
m.Name = string(data[iNdEx:postIndex])
m.Name = string(dAtA[iNdEx:postIndex])
iNdEx = postIndex
case 2:
if wireType != 2 {
@ -517,7 +578,7 @@ func (m *EndpointRecord) Unmarshal(data []byte) error {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
b := dAtA[iNdEx]
iNdEx++
stringLen |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
@ -532,7 +593,7 @@ func (m *EndpointRecord) Unmarshal(data []byte) error {
if postIndex > l {
return io.ErrUnexpectedEOF
}
m.ServiceName = string(data[iNdEx:postIndex])
m.ServiceName = string(dAtA[iNdEx:postIndex])
iNdEx = postIndex
case 3:
if wireType != 2 {
@ -546,7 +607,7 @@ func (m *EndpointRecord) Unmarshal(data []byte) error {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
b := dAtA[iNdEx]
iNdEx++
stringLen |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
@ -561,7 +622,7 @@ func (m *EndpointRecord) Unmarshal(data []byte) error {
if postIndex > l {
return io.ErrUnexpectedEOF
}
m.ServiceID = string(data[iNdEx:postIndex])
m.ServiceID = string(dAtA[iNdEx:postIndex])
iNdEx = postIndex
case 4:
if wireType != 2 {
@ -575,7 +636,7 @@ func (m *EndpointRecord) Unmarshal(data []byte) error {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
b := dAtA[iNdEx]
iNdEx++
stringLen |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
@ -590,7 +651,7 @@ func (m *EndpointRecord) Unmarshal(data []byte) error {
if postIndex > l {
return io.ErrUnexpectedEOF
}
m.VirtualIP = string(data[iNdEx:postIndex])
m.VirtualIP = string(dAtA[iNdEx:postIndex])
iNdEx = postIndex
case 5:
if wireType != 2 {
@ -604,7 +665,7 @@ func (m *EndpointRecord) Unmarshal(data []byte) error {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
b := dAtA[iNdEx]
iNdEx++
stringLen |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
@ -619,7 +680,7 @@ func (m *EndpointRecord) Unmarshal(data []byte) error {
if postIndex > l {
return io.ErrUnexpectedEOF
}
m.EndpointIP = string(data[iNdEx:postIndex])
m.EndpointIP = string(dAtA[iNdEx:postIndex])
iNdEx = postIndex
case 6:
if wireType != 2 {
@ -633,7 +694,7 @@ func (m *EndpointRecord) Unmarshal(data []byte) error {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
b := dAtA[iNdEx]
iNdEx++
msglen |= (int(b) & 0x7F) << shift
if b < 0x80 {
@ -648,7 +709,7 @@ func (m *EndpointRecord) Unmarshal(data []byte) error {
return io.ErrUnexpectedEOF
}
m.IngressPorts = append(m.IngressPorts, &PortConfig{})
if err := m.IngressPorts[len(m.IngressPorts)-1].Unmarshal(data[iNdEx:postIndex]); err != nil {
if err := m.IngressPorts[len(m.IngressPorts)-1].Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
return err
}
iNdEx = postIndex
@ -664,7 +725,7 @@ func (m *EndpointRecord) Unmarshal(data []byte) error {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
b := dAtA[iNdEx]
iNdEx++
stringLen |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
@ -679,7 +740,7 @@ func (m *EndpointRecord) Unmarshal(data []byte) error {
if postIndex > l {
return io.ErrUnexpectedEOF
}
m.Aliases = append(m.Aliases, string(data[iNdEx:postIndex]))
m.Aliases = append(m.Aliases, string(dAtA[iNdEx:postIndex]))
iNdEx = postIndex
case 8:
if wireType != 2 {
@ -693,7 +754,7 @@ func (m *EndpointRecord) Unmarshal(data []byte) error {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
b := dAtA[iNdEx]
iNdEx++
stringLen |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
@ -708,11 +769,11 @@ func (m *EndpointRecord) Unmarshal(data []byte) error {
if postIndex > l {
return io.ErrUnexpectedEOF
}
m.TaskAliases = append(m.TaskAliases, string(data[iNdEx:postIndex]))
m.TaskAliases = append(m.TaskAliases, string(dAtA[iNdEx:postIndex]))
iNdEx = postIndex
default:
iNdEx = preIndex
skippy, err := skipAgent(data[iNdEx:])
skippy, err := skipAgent(dAtA[iNdEx:])
if err != nil {
return err
}
@ -731,8 +792,8 @@ func (m *EndpointRecord) Unmarshal(data []byte) error {
}
return nil
}
func (m *PortConfig) Unmarshal(data []byte) error {
l := len(data)
func (m *PortConfig) Unmarshal(dAtA []byte) error {
l := len(dAtA)
iNdEx := 0
for iNdEx < l {
preIndex := iNdEx
@ -744,7 +805,7 @@ func (m *PortConfig) Unmarshal(data []byte) error {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
b := dAtA[iNdEx]
iNdEx++
wire |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
@ -772,7 +833,7 @@ func (m *PortConfig) Unmarshal(data []byte) error {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
b := dAtA[iNdEx]
iNdEx++
stringLen |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
@ -787,7 +848,7 @@ func (m *PortConfig) Unmarshal(data []byte) error {
if postIndex > l {
return io.ErrUnexpectedEOF
}
m.Name = string(data[iNdEx:postIndex])
m.Name = string(dAtA[iNdEx:postIndex])
iNdEx = postIndex
case 2:
if wireType != 0 {
@ -801,7 +862,7 @@ func (m *PortConfig) Unmarshal(data []byte) error {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
b := dAtA[iNdEx]
iNdEx++
m.Protocol |= (PortConfig_Protocol(b) & 0x7F) << shift
if b < 0x80 {
@ -820,7 +881,7 @@ func (m *PortConfig) Unmarshal(data []byte) error {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
b := dAtA[iNdEx]
iNdEx++
m.TargetPort |= (uint32(b) & 0x7F) << shift
if b < 0x80 {
@ -839,7 +900,7 @@ func (m *PortConfig) Unmarshal(data []byte) error {
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := data[iNdEx]
b := dAtA[iNdEx]
iNdEx++
m.PublishedPort |= (uint32(b) & 0x7F) << shift
if b < 0x80 {
@ -848,7 +909,7 @@ func (m *PortConfig) Unmarshal(data []byte) error {
}
default:
iNdEx = preIndex
skippy, err := skipAgent(data[iNdEx:])
skippy, err := skipAgent(dAtA[iNdEx:])
if err != nil {
return err
}
@ -867,8 +928,8 @@ func (m *PortConfig) Unmarshal(data []byte) error {
}
return nil
}
func skipAgent(data []byte) (n int, err error) {
l := len(data)
func skipAgent(dAtA []byte) (n int, err error) {
l := len(dAtA)
iNdEx := 0
for iNdEx < l {
var wire uint64
@ -879,7 +940,7 @@ func skipAgent(data []byte) (n int, err error) {
if iNdEx >= l {
return 0, io.ErrUnexpectedEOF
}
b := data[iNdEx]
b := dAtA[iNdEx]
iNdEx++
wire |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
@ -897,7 +958,7 @@ func skipAgent(data []byte) (n int, err error) {
return 0, io.ErrUnexpectedEOF
}
iNdEx++
if data[iNdEx-1] < 0x80 {
if dAtA[iNdEx-1] < 0x80 {
break
}
}
@ -914,7 +975,7 @@ func skipAgent(data []byte) (n int, err error) {
if iNdEx >= l {
return 0, io.ErrUnexpectedEOF
}
b := data[iNdEx]
b := dAtA[iNdEx]
iNdEx++
length |= (int(b) & 0x7F) << shift
if b < 0x80 {
@ -937,7 +998,7 @@ func skipAgent(data []byte) (n int, err error) {
if iNdEx >= l {
return 0, io.ErrUnexpectedEOF
}
b := data[iNdEx]
b := dAtA[iNdEx]
iNdEx++
innerWire |= (uint64(b) & 0x7F) << shift
if b < 0x80 {
@ -948,7 +1009,7 @@ func skipAgent(data []byte) (n int, err error) {
if innerWireType == 4 {
break
}
next, err := skipAgent(data[start:])
next, err := skipAgent(dAtA[start:])
if err != nil {
return 0, err
}
@ -972,32 +1033,36 @@ var (
ErrIntOverflowAgent = fmt.Errorf("proto: integer overflow")
)
func init() { proto.RegisterFile("agent.proto", fileDescriptorAgent) }
var fileDescriptorAgent = []byte{
// 413 bytes of a gzipped FileDescriptorProto
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0x00, 0x00, 0x00, 0xff, 0xff, 0xc9, 0x63, 0x1a, 0x0f, 0x90, 0x02, 0x00, 0x00,
// 437 bytes of a gzipped FileDescriptorProto
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0x67, 0xac, 0x02, 0x00, 0x00,
}

View file

@ -51,6 +51,7 @@ message PortConfig {
TCP = 0 [(gogoproto.enumvalue_customname) = "ProtocolTCP"];
UDP = 1 [(gogoproto.enumvalue_customname) = "ProtocolUDP"];
SCTP = 2 [(gogoproto.enumvalue_customname) = "ProtocolSCTP"];
}
// Name for the port. If provided the port information can

View file

@ -7,6 +7,7 @@ import (
"net"
"github.com/docker/libnetwork/types"
"github.com/ishidawataru/sctp"
"github.com/sirupsen/logrus"
)
@ -92,6 +93,9 @@ func (n *bridgeNetwork) allocatePort(bnd *types.PortBinding, containerIP, defHos
case *net.UDPAddr:
bnd.HostPort = uint16(host.(*net.UDPAddr).Port)
return nil
case *sctp.SCTPAddr:
bnd.HostPort = uint16(host.(*sctp.SCTPAddr).Port)
return nil
default:
// For completeness
return ErrUnsupportedAddressType(fmt.Sprintf("%T", netAddr))

View file

@ -42,4 +42,10 @@ const (
// DisableGatewayDNS label
DisableGatewayDNS = "com.docker.network.windowsshim.disable_gatewaydns"
// EnableOutboundNat label
EnableOutboundNat = "com.docker.network.windowsshim.enable_outboundnat"
// OutboundNatExceptions label
OutboundNatExceptions = "com.docker.network.windowsshim.outboundnat_exceptions"
)

View file

@ -20,6 +20,7 @@ import (
"sync"
"github.com/Microsoft/hcsshim"
"github.com/docker/docker/pkg/system"
"github.com/docker/libnetwork/datastore"
"github.com/docker/libnetwork/discoverapi"
"github.com/docker/libnetwork/driverapi"
@ -30,21 +31,23 @@ import (
// networkConfiguration for network specific configuration
type networkConfiguration struct {
ID string
Type string
Name string
HnsID string
RDID string
VLAN uint
VSID uint
DNSServers string
MacPools []hcsshim.MacPool
DNSSuffix string
SourceMac string
NetworkAdapterName string
dbIndex uint64
dbExists bool
DisableGatewayDNS bool
ID string
Type string
Name string
HnsID string
RDID string
VLAN uint
VSID uint
DNSServers string
MacPools []hcsshim.MacPool
DNSSuffix string
SourceMac string
NetworkAdapterName string
dbIndex uint64
dbExists bool
DisableGatewayDNS bool
EnableOutboundNat bool
OutboundNatExceptions []string
}
// endpointConfiguration represents the user specified configuration for the sandbox endpoint
@ -208,6 +211,18 @@ func (d *driver) parseNetworkOptions(id string, genericOptions map[string]string
return nil, err
}
config.VSID = uint(vsid)
case EnableOutboundNat:
if system.GetOSVersion().Build <= 16236 {
return nil, fmt.Errorf("Invalid network option. OutboundNat is not supported on this OS version")
}
b, err := strconv.ParseBool(value)
if err != nil {
return nil, err
}
config.EnableOutboundNat = b
case OutboundNatExceptions:
s := strings.Split(value, ",")
config.OutboundNatExceptions = s
}
}
@ -609,6 +624,19 @@ func (d *driver) CreateEndpoint(nid, eid string, ifInfo driverapi.InterfaceInfo,
endpointStruct.DisableICC = epOption.DisableICC
// Inherit OutboundNat policy from the network
if n.config.EnableOutboundNat {
outboundNatPolicy, err := json.Marshal(hcsshim.OutboundNatPolicy{
Policy: hcsshim.Policy{Type: hcsshim.OutboundNat},
Exceptions: n.config.OutboundNatExceptions,
})
if err != nil {
return err
}
endpointStruct.Policies = append(endpointStruct.Policies, outboundNatPolicy)
}
configurationb, err := json.Marshal(endpointStruct)
if err != nil {
return err

View file

@ -276,7 +276,31 @@ func (c *ChainInfo) Forward(action Action, ip net.IP, port int, proto, destAddr
"--dport", strconv.Itoa(destPort),
"-j", "MASQUERADE",
}
return ProgramRule(Nat, "POSTROUTING", action, args)
if err := ProgramRule(Nat, "POSTROUTING", action, args); err != nil {
return err
}
if proto == "sctp" {
// Linux kernel v4.9 and below enables NETIF_F_SCTP_CRC for veth by
// the following commit.
// This introduces a problem when conbined with a physical NIC without
// NETIF_F_SCTP_CRC. As for a workaround, here we add an iptables entry
// to fill the checksum.
//
// https://github.com/torvalds/linux/commit/c80fafbbb59ef9924962f83aac85531039395b18
args = []string{
"-p", proto,
"--sport", strconv.Itoa(destPort),
"-j", "CHECKSUM",
"--checksum-fill",
}
if err := ProgramRule(Mangle, "POSTROUTING", action, args); err != nil {
return err
}
}
return nil
}
// Link adds reciprocal ACCEPT rule for two supplied IP addresses.

View file

@ -120,7 +120,7 @@ func (p *PortAllocator) RequestPortInRange(ip net.IP, proto string, portStart, p
p.mutex.Lock()
defer p.mutex.Unlock()
if proto != "tcp" && proto != "udp" {
if proto != "tcp" && proto != "udp" && proto != "sctp" {
return 0, ErrUnknownProtocol
}
@ -131,8 +131,9 @@ func (p *PortAllocator) RequestPortInRange(ip net.IP, proto string, portStart, p
protomap, ok := p.ipMap[ipstr]
if !ok {
protomap = protoMap{
"tcp": p.newPortMap(),
"udp": p.newPortMap(),
"tcp": p.newPortMap(),
"udp": p.newPortMap(),
"sctp": p.newPortMap(),
}
p.ipMap[ipstr] = protomap

View file

@ -8,6 +8,7 @@ import (
"github.com/docker/libnetwork/iptables"
"github.com/docker/libnetwork/portallocator"
"github.com/ishidawataru/sctp"
"github.com/sirupsen/logrus"
)
@ -27,6 +28,8 @@ var (
ErrPortMappedForIP = errors.New("port is already mapped to ip")
// ErrPortNotMapped refers to an unmapped port
ErrPortNotMapped = errors.New("port is not mapped")
// ErrSCTPAddrNoIP refers to a SCTP address without IP address.
ErrSCTPAddrNoIP = errors.New("sctp address does not contain any IP address")
)
// PortMapper manages the network address translation
@ -98,7 +101,10 @@ func (pm *PortMapper) MapRange(container net.Addr, hostIP net.IP, hostPortStart,
return nil, err
}
} else {
m.userlandProxy = newDummyProxy(proto, hostIP, allocatedHostPort)
m.userlandProxy, err = newDummyProxy(proto, hostIP, allocatedHostPort)
if err != nil {
return nil, err
}
}
case *net.UDPAddr:
proto = "udp"
@ -118,7 +124,37 @@ func (pm *PortMapper) MapRange(container net.Addr, hostIP net.IP, hostPortStart,
return nil, err
}
} else {
m.userlandProxy = newDummyProxy(proto, hostIP, allocatedHostPort)
m.userlandProxy, err = newDummyProxy(proto, hostIP, allocatedHostPort)
if err != nil {
return nil, err
}
}
case *sctp.SCTPAddr:
proto = "sctp"
if allocatedHostPort, err = pm.Allocator.RequestPortInRange(hostIP, proto, hostPortStart, hostPortEnd); err != nil {
return nil, err
}
m = &mapping{
proto: proto,
host: &sctp.SCTPAddr{IP: []net.IP{hostIP}, Port: allocatedHostPort},
container: container,
}
if useProxy {
sctpAddr := container.(*sctp.SCTPAddr)
if len(sctpAddr.IP) == 0 {
return nil, ErrSCTPAddrNoIP
}
m.userlandProxy, err = newProxy(proto, hostIP, allocatedHostPort, sctpAddr.IP[0], sctpAddr.Port, pm.proxyPath)
if err != nil {
return nil, err
}
} else {
m.userlandProxy, err = newDummyProxy(proto, hostIP, allocatedHostPort)
if err != nil {
return nil, err
}
}
default:
return nil, ErrUnknownBackendAddressType
@ -195,8 +231,13 @@ func (pm *PortMapper) Unmap(host net.Addr) error {
return pm.Allocator.ReleasePort(a.IP, "tcp", a.Port)
case *net.UDPAddr:
return pm.Allocator.ReleasePort(a.IP, "udp", a.Port)
case *sctp.SCTPAddr:
if len(a.IP) == 0 {
return ErrSCTPAddrNoIP
}
return pm.Allocator.ReleasePort(a.IP[0], "sctp", a.Port)
}
return nil
return ErrUnknownBackendAddressType
}
//ReMapAll will re-apply all port mappings
@ -219,6 +260,12 @@ func getKey(a net.Addr) string {
return fmt.Sprintf("%s:%d/%s", t.IP.String(), t.Port, "tcp")
case *net.UDPAddr:
return fmt.Sprintf("%s:%d/%s", t.IP.String(), t.Port, "udp")
case *sctp.SCTPAddr:
if len(t.IP) == 0 {
logrus.Error(ErrSCTPAddrNoIP)
return ""
}
return fmt.Sprintf("%s:%d/%s", t.IP[0].String(), t.Port, "sctp")
}
return ""
}
@ -229,6 +276,12 @@ func getIPAndPort(a net.Addr) (net.IP, int) {
return t.IP, t.Port
case *net.UDPAddr:
return t.IP, t.Port
case *sctp.SCTPAddr:
if len(t.IP) == 0 {
logrus.Error(ErrSCTPAddrNoIP)
return nil, 0
}
return t.IP[0], t.Port
}
return nil, 0
}

View file

@ -8,6 +8,8 @@ import (
"os"
"os/exec"
"time"
"github.com/ishidawataru/sctp"
)
var userlandProxyCommandName = "docker-proxy"
@ -79,16 +81,20 @@ type dummyProxy struct {
addr net.Addr
}
func newDummyProxy(proto string, hostIP net.IP, hostPort int) userlandProxy {
func newDummyProxy(proto string, hostIP net.IP, hostPort int) (userlandProxy, error) {
switch proto {
case "tcp":
addr := &net.TCPAddr{IP: hostIP, Port: hostPort}
return &dummyProxy{addr: addr}
return &dummyProxy{addr: addr}, nil
case "udp":
addr := &net.UDPAddr{IP: hostIP, Port: hostPort}
return &dummyProxy{addr: addr}
return &dummyProxy{addr: addr}, nil
case "sctp":
addr := &sctp.SCTPAddr{IP: []net.IP{hostIP}, Port: hostPort}
return &dummyProxy{addr: addr}, nil
default:
return nil, fmt.Errorf("Unknown addr type: %s", proto)
}
return nil
}
func (p *dummyProxy) Start() error {
@ -105,6 +111,12 @@ func (p *dummyProxy) Start() error {
return err
}
p.listener = l
case *sctp.SCTPAddr:
l, err := sctp.ListenSCTP("sctp", addr)
if err != nil {
return err
}
p.listener = l
default:
return fmt.Errorf("Unknown addr type: %T", p.addr)
}

View file

@ -19,6 +19,7 @@ import (
"github.com/docker/libnetwork/ipvs"
"github.com/docker/libnetwork/ns"
"github.com/gogo/protobuf/proto"
"github.com/ishidawataru/sctp"
"github.com/sirupsen/logrus"
"github.com/vishvananda/netlink/nl"
"github.com/vishvananda/netns"
@ -503,6 +504,10 @@ func plumbProxy(iPort *PortConfig, isDelete bool) error {
l, err = net.ListenTCP("tcp", &net.TCPAddr{Port: int(iPort.PublishedPort)})
case ProtocolUDP:
l, err = net.ListenUDP("udp", &net.UDPAddr{Port: int(iPort.PublishedPort)})
case ProtocolSCTP:
l, err = sctp.ListenSCTP("sctp", &sctp.SCTPAddr{Port: int(iPort.PublishedPort)})
default:
err = fmt.Errorf("unknown protocol %v", iPort.Protocol)
}
if err != nil {
@ -761,6 +766,7 @@ func redirecter() {
// Ensure blocking rules for anything else in/to ingress network
for _, rule := range [][]string{
{"-d", eIP.String(), "-p", "sctp", "-j", "DROP"},
{"-d", eIP.String(), "-p", "udp", "-j", "DROP"},
{"-d", eIP.String(), "-p", "tcp", "-j", "DROP"},
} {

View file

@ -7,6 +7,8 @@ import (
"net"
"strconv"
"strings"
"github.com/ishidawataru/sctp"
)
// constants for the IP address type
@ -96,6 +98,8 @@ func (p PortBinding) HostAddr() (net.Addr, error) {
return &net.UDPAddr{IP: p.HostIP, Port: int(p.HostPort)}, nil
case TCP:
return &net.TCPAddr{IP: p.HostIP, Port: int(p.HostPort)}, nil
case SCTP:
return &sctp.SCTPAddr{IP: []net.IP{p.HostIP}, Port: int(p.HostPort)}, nil
default:
return nil, ErrInvalidProtocolBinding(p.Proto.String())
}
@ -108,6 +112,8 @@ func (p PortBinding) ContainerAddr() (net.Addr, error) {
return &net.UDPAddr{IP: p.IP, Port: int(p.Port)}, nil
case TCP:
return &net.TCPAddr{IP: p.IP, Port: int(p.Port)}, nil
case SCTP:
return &sctp.SCTPAddr{IP: []net.IP{p.IP}, Port: int(p.Port)}, nil
default:
return nil, ErrInvalidProtocolBinding(p.Proto.String())
}
@ -233,6 +239,8 @@ const (
TCP = 6
// UDP is for the UDP ip protocol
UDP = 17
// SCTP is for the SCTP ip protocol
SCTP = 132
)
// Protocol represents an IP protocol number
@ -246,6 +254,8 @@ func (p Protocol) String() string {
return "tcp"
case UDP:
return "udp"
case SCTP:
return "sctp"
default:
return fmt.Sprintf("%d", p)
}
@ -260,6 +270,8 @@ func ParseProtocol(s string) Protocol {
return UDP
case "tcp":
return TCP
case "sctp":
return SCTP
default:
return 0
}

View file

@ -51,3 +51,4 @@ golang.org/x/crypto 558b6879de74bc843225cde5686419267ff707ca
golang.org/x/net 7dcfb8076726a3fdd9353b6b8a1f1b6be6811bd6
golang.org/x/sys 07c182904dbd53199946ba614a412c61d3c548f5
github.com/pkg/errors 839d9e913e063e28dfd0e6c7b7512793e0a48be9
github.com/ishidawataru/sctp 07191f837fedd2f13d1ec7b5f885f0f3ec54b1cb

201
vendor/github.com/ishidawataru/sctp/LICENSE generated vendored Normal file
View file

@ -0,0 +1,201 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

18
vendor/github.com/ishidawataru/sctp/README.md generated vendored Normal file
View file

@ -0,0 +1,18 @@
Stream Control Transmission Protocol (SCTP)
----
[![Build Status](https://travis-ci.org/ishidawataru/sctp.svg?branch=master)](https://travis-ci.org/ishidawataru/sctp/builds)
Examples
----
See `example/sctp.go`
```go
$ cd example
$ go build
$ # run example SCTP server
$ ./example -server -port 1000 -ip 10.10.0.1,10.20.0.1
$ # run example SCTP client
$ ./example -port 1000 -ip 10.10.0.1,10.20.0.1
```

656
vendor/github.com/ishidawataru/sctp/sctp.go generated vendored Normal file
View file

@ -0,0 +1,656 @@
package sctp
import (
"bytes"
"encoding/binary"
"fmt"
"net"
"strconv"
"strings"
"sync"
"sync/atomic"
"syscall"
"time"
"unsafe"
)
const (
SOL_SCTP = 132
SCTP_BINDX_ADD_ADDR = 0x01
SCTP_BINDX_REM_ADDR = 0x02
MSG_NOTIFICATION = 0x8000
)
const (
SCTP_RTOINFO = iota
SCTP_ASSOCINFO
SCTP_INITMSG
SCTP_NODELAY
SCTP_AUTOCLOSE
SCTP_SET_PEER_PRIMARY_ADDR
SCTP_PRIMARY_ADDR
SCTP_ADAPTATION_LAYER
SCTP_DISABLE_FRAGMENTS
SCTP_PEER_ADDR_PARAMS
SCTP_DEFAULT_SENT_PARAM
SCTP_EVENTS
SCTP_I_WANT_MAPPED_V4_ADDR
SCTP_MAXSEG
SCTP_STATUS
SCTP_GET_PEER_ADDR_INFO
SCTP_DELAYED_ACK_TIME
SCTP_DELAYED_ACK = SCTP_DELAYED_ACK_TIME
SCTP_DELAYED_SACK = SCTP_DELAYED_ACK_TIME
SCTP_SOCKOPT_BINDX_ADD = 100
SCTP_SOCKOPT_BINDX_REM = 101
SCTP_SOCKOPT_PEELOFF = 102
SCTP_GET_PEER_ADDRS = 108
SCTP_GET_LOCAL_ADDRS = 109
SCTP_SOCKOPT_CONNECTX = 110
SCTP_SOCKOPT_CONNECTX3 = 111
)
const (
SCTP_EVENT_DATA_IO = 1 << iota
SCTP_EVENT_ASSOCIATION
SCTP_EVENT_ADDRESS
SCTP_EVENT_SEND_FAILURE
SCTP_EVENT_PEER_ERROR
SCTP_EVENT_SHUTDOWN
SCTP_EVENT_PARTIAL_DELIVERY
SCTP_EVENT_ADAPTATION_LAYER
SCTP_EVENT_AUTHENTICATION
SCTP_EVENT_SENDER_DRY
SCTP_EVENT_ALL = SCTP_EVENT_DATA_IO | SCTP_EVENT_ASSOCIATION | SCTP_EVENT_ADDRESS | SCTP_EVENT_SEND_FAILURE | SCTP_EVENT_PEER_ERROR | SCTP_EVENT_SHUTDOWN | SCTP_EVENT_PARTIAL_DELIVERY | SCTP_EVENT_ADAPTATION_LAYER | SCTP_EVENT_AUTHENTICATION | SCTP_EVENT_SENDER_DRY
)
type SCTPNotificationType int
const (
SCTP_SN_TYPE_BASE = SCTPNotificationType(iota + (1 << 15))
SCTP_ASSOC_CHANGE
SCTP_PEER_ADDR_CHANGE
SCTP_SEND_FAILED
SCTP_REMOTE_ERROR
SCTP_SHUTDOWN_EVENT
SCTP_PARTIAL_DELIVERY_EVENT
SCTP_ADAPTATION_INDICATION
SCTP_AUTHENTICATION_INDICATION
SCTP_SENDER_DRY_EVENT
)
type NotificationHandler func([]byte) error
type EventSubscribe struct {
DataIO uint8
Association uint8
Address uint8
SendFailure uint8
PeerError uint8
Shutdown uint8
PartialDelivery uint8
AdaptationLayer uint8
Authentication uint8
SenderDry uint8
}
const (
SCTP_CMSG_INIT = iota
SCTP_CMSG_SNDRCV
SCTP_CMSG_SNDINFO
SCTP_CMSG_RCVINFO
SCTP_CMSG_NXTINFO
)
const (
SCTP_UNORDERED = 1 << iota
SCTP_ADDR_OVER
SCTP_ABORT
SCTP_SACK_IMMEDIATELY
SCTP_EOF
)
const (
SCTP_MAX_STREAM = 0xffff
)
type InitMsg struct {
NumOstreams uint16
MaxInstreams uint16
MaxAttempts uint16
MaxInitTimeout uint16
}
type SndRcvInfo struct {
Stream uint16
SSN uint16
Flags uint16
_ uint16
PPID uint32
Context uint32
TTL uint32
TSN uint32
CumTSN uint32
AssocID int32
}
type SndInfo struct {
SID uint16
Flags uint16
PPID uint32
Context uint32
AssocID int32
}
type GetAddrsOld struct {
AssocID int32
AddrNum int32
Addrs uintptr
}
type NotificationHeader struct {
Type uint16
Flags uint16
Length uint32
}
type SCTPState uint16
const (
SCTP_COMM_UP = SCTPState(iota)
SCTP_COMM_LOST
SCTP_RESTART
SCTP_SHUTDOWN_COMP
SCTP_CANT_STR_ASSOC
)
var nativeEndian binary.ByteOrder
var sndRcvInfoSize uintptr
func init() {
i := uint16(1)
if *(*byte)(unsafe.Pointer(&i)) == 0 {
nativeEndian = binary.BigEndian
} else {
nativeEndian = binary.LittleEndian
}
info := SndRcvInfo{}
sndRcvInfoSize = unsafe.Sizeof(info)
}
func toBuf(v interface{}) []byte {
var buf bytes.Buffer
binary.Write(&buf, nativeEndian, v)
return buf.Bytes()
}
func htons(h uint16) uint16 {
if nativeEndian == binary.LittleEndian {
return (h << 8 & 0xff00) | (h >> 8 & 0xff)
}
return h
}
var ntohs = htons
func setNumOstreams(fd, num int) error {
param := InitMsg{
NumOstreams: uint16(num),
}
optlen := unsafe.Sizeof(param)
_, _, err := setsockopt(fd, SCTP_INITMSG, uintptr(unsafe.Pointer(&param)), uintptr(optlen))
return err
}
type SCTPAddr struct {
IP []net.IP
Port int
}
func (a *SCTPAddr) ToRawSockAddrBuf() []byte {
buf := []byte{}
p := htons(uint16(a.Port))
for _, ip := range a.IP {
if ip.To4() != nil {
s := syscall.RawSockaddrInet4{
Family: syscall.AF_INET,
Port: p,
}
copy(s.Addr[:], ip.To4())
buf = append(buf, toBuf(s)...)
} else {
s := syscall.RawSockaddrInet6{
Family: syscall.AF_INET6,
Port: p,
}
copy(s.Addr[:], ip)
buf = append(buf, toBuf(s)...)
}
}
return buf
}
func (a *SCTPAddr) String() string {
var b bytes.Buffer
for n, i := range a.IP {
if a.IP[n].To4() != nil {
b.WriteString(i.String())
} else if a.IP[n].To16() != nil {
b.WriteRune('[')
b.WriteString(i.String())
b.WriteRune(']')
}
if n < len(a.IP)-1 {
b.WriteRune('/')
}
}
b.WriteRune(':')
b.WriteString(strconv.Itoa(a.Port))
return b.String()
}
func (a *SCTPAddr) Network() string { return "sctp" }
func ResolveSCTPAddr(network, addrs string) (*SCTPAddr, error) {
tcpnet := ""
switch network {
case "", "sctp":
case "sctp4":
tcpnet = "tcp4"
case "sctp6":
tcpnet = "tcp6"
default:
return nil, fmt.Errorf("invalid net: %s", network)
}
elems := strings.Split(addrs, "/")
if len(elems) == 0 {
return nil, fmt.Errorf("invalid input: %s", addrs)
}
ipaddrs := make([]net.IP, 0, len(elems))
for _, e := range elems[:len(elems)-1] {
tcpa, err := net.ResolveTCPAddr(tcpnet, e+":")
if err != nil {
return nil, err
}
ipaddrs = append(ipaddrs, tcpa.IP)
}
tcpa, err := net.ResolveTCPAddr(tcpnet, elems[len(elems)-1])
if err != nil {
return nil, err
}
if tcpa.IP != nil {
ipaddrs = append(ipaddrs, tcpa.IP)
} else {
ipaddrs = nil
}
return &SCTPAddr{
IP: ipaddrs,
Port: tcpa.Port,
}, nil
}
func SCTPConnect(fd int, addr *SCTPAddr) (int, error) {
buf := addr.ToRawSockAddrBuf()
param := GetAddrsOld{
AddrNum: int32(len(buf)),
Addrs: uintptr(uintptr(unsafe.Pointer(&buf[0]))),
}
optlen := unsafe.Sizeof(param)
_, _, err := getsockopt(fd, SCTP_SOCKOPT_CONNECTX3, uintptr(unsafe.Pointer(&param)), uintptr(unsafe.Pointer(&optlen)))
if err == nil {
return int(param.AssocID), nil
} else if err != syscall.ENOPROTOOPT {
return 0, err
}
r0, _, err := setsockopt(fd, SCTP_SOCKOPT_CONNECTX, uintptr(unsafe.Pointer(&buf[0])), uintptr(len(buf)))
return int(r0), err
}
func SCTPBind(fd int, addr *SCTPAddr, flags int) error {
var option uintptr
switch flags {
case SCTP_BINDX_ADD_ADDR:
option = SCTP_SOCKOPT_BINDX_ADD
case SCTP_BINDX_REM_ADDR:
option = SCTP_SOCKOPT_BINDX_REM
default:
return syscall.EINVAL
}
buf := addr.ToRawSockAddrBuf()
_, _, err := setsockopt(fd, option, uintptr(unsafe.Pointer(&buf[0])), uintptr(len(buf)))
return err
}
type SCTPConn struct {
_fd int32
notificationHandler NotificationHandler
}
func (c *SCTPConn) fd() int {
return int(atomic.LoadInt32(&c._fd))
}
func NewSCTPConn(fd int, handler NotificationHandler) *SCTPConn {
conn := &SCTPConn{
_fd: int32(fd),
notificationHandler: handler,
}
return conn
}
func (c *SCTPConn) Write(b []byte) (int, error) {
return c.SCTPWrite(b, nil)
}
func (c *SCTPConn) Read(b []byte) (int, error) {
n, _, err := c.SCTPRead(b)
if n < 0 {
n = 0
}
return n, err
}
func (c *SCTPConn) SetInitMsg(numOstreams, maxInstreams, maxAttempts, maxInitTimeout int) error {
param := InitMsg{
NumOstreams: uint16(numOstreams),
MaxInstreams: uint16(maxInstreams),
MaxAttempts: uint16(maxAttempts),
MaxInitTimeout: uint16(maxInitTimeout),
}
optlen := unsafe.Sizeof(param)
_, _, err := setsockopt(c.fd(), SCTP_INITMSG, uintptr(unsafe.Pointer(&param)), uintptr(optlen))
return err
}
func (c *SCTPConn) SubscribeEvents(flags int) error {
var d, a, ad, sf, p, sh, pa, ada, au, se uint8
if flags&SCTP_EVENT_DATA_IO > 0 {
d = 1
}
if flags&SCTP_EVENT_ASSOCIATION > 0 {
a = 1
}
if flags&SCTP_EVENT_ADDRESS > 0 {
ad = 1
}
if flags&SCTP_EVENT_SEND_FAILURE > 0 {
sf = 1
}
if flags&SCTP_EVENT_PEER_ERROR > 0 {
p = 1
}
if flags&SCTP_EVENT_SHUTDOWN > 0 {
sh = 1
}
if flags&SCTP_EVENT_PARTIAL_DELIVERY > 0 {
pa = 1
}
if flags&SCTP_EVENT_ADAPTATION_LAYER > 0 {
ada = 1
}
if flags&SCTP_EVENT_AUTHENTICATION > 0 {
au = 1
}
if flags&SCTP_EVENT_SENDER_DRY > 0 {
se = 1
}
param := EventSubscribe{
DataIO: d,
Association: a,
Address: ad,
SendFailure: sf,
PeerError: p,
Shutdown: sh,
PartialDelivery: pa,
AdaptationLayer: ada,
Authentication: au,
SenderDry: se,
}
optlen := unsafe.Sizeof(param)
_, _, err := setsockopt(c.fd(), SCTP_EVENTS, uintptr(unsafe.Pointer(&param)), uintptr(optlen))
return err
}
func (c *SCTPConn) SubscribedEvents() (int, error) {
param := EventSubscribe{}
optlen := unsafe.Sizeof(param)
_, _, err := getsockopt(c.fd(), SCTP_EVENTS, uintptr(unsafe.Pointer(&param)), uintptr(unsafe.Pointer(&optlen)))
if err != nil {
return 0, err
}
var flags int
if param.DataIO > 0 {
flags |= SCTP_EVENT_DATA_IO
}
if param.Association > 0 {
flags |= SCTP_EVENT_ASSOCIATION
}
if param.Address > 0 {
flags |= SCTP_EVENT_ADDRESS
}
if param.SendFailure > 0 {
flags |= SCTP_EVENT_SEND_FAILURE
}
if param.PeerError > 0 {
flags |= SCTP_EVENT_PEER_ERROR
}
if param.Shutdown > 0 {
flags |= SCTP_EVENT_SHUTDOWN
}
if param.PartialDelivery > 0 {
flags |= SCTP_EVENT_PARTIAL_DELIVERY
}
if param.AdaptationLayer > 0 {
flags |= SCTP_EVENT_ADAPTATION_LAYER
}
if param.Authentication > 0 {
flags |= SCTP_EVENT_AUTHENTICATION
}
if param.SenderDry > 0 {
flags |= SCTP_EVENT_SENDER_DRY
}
return flags, nil
}
func (c *SCTPConn) SetDefaultSentParam(info *SndRcvInfo) error {
optlen := unsafe.Sizeof(*info)
_, _, err := setsockopt(c.fd(), SCTP_DEFAULT_SENT_PARAM, uintptr(unsafe.Pointer(info)), uintptr(optlen))
return err
}
func (c *SCTPConn) GetDefaultSentParam() (*SndRcvInfo, error) {
info := &SndRcvInfo{}
optlen := unsafe.Sizeof(*info)
_, _, err := getsockopt(c.fd(), SCTP_DEFAULT_SENT_PARAM, uintptr(unsafe.Pointer(info)), uintptr(unsafe.Pointer(&optlen)))
return info, err
}
func resolveFromRawAddr(ptr unsafe.Pointer, n int) (*SCTPAddr, error) {
addr := &SCTPAddr{
IP: make([]net.IP, n),
}
switch family := (*(*syscall.RawSockaddrAny)(ptr)).Addr.Family; family {
case syscall.AF_INET:
addr.Port = int(ntohs(uint16((*(*syscall.RawSockaddrInet4)(ptr)).Port)))
tmp := syscall.RawSockaddrInet4{}
size := unsafe.Sizeof(tmp)
for i := 0; i < n; i++ {
a := *(*syscall.RawSockaddrInet4)(unsafe.Pointer(
uintptr(ptr) + size*uintptr(i)))
addr.IP[i] = a.Addr[:]
}
case syscall.AF_INET6:
addr.Port = int(ntohs(uint16((*(*syscall.RawSockaddrInet4)(ptr)).Port)))
tmp := syscall.RawSockaddrInet6{}
size := unsafe.Sizeof(tmp)
for i := 0; i < n; i++ {
a := *(*syscall.RawSockaddrInet6)(unsafe.Pointer(
uintptr(ptr) + size*uintptr(i)))
addr.IP[i] = a.Addr[:]
}
default:
return nil, fmt.Errorf("unknown address family: %d", family)
}
return addr, nil
}
func sctpGetAddrs(fd, id, optname int) (*SCTPAddr, error) {
type getaddrs struct {
assocId int32
addrNum uint32
addrs [4096]byte
}
param := getaddrs{
assocId: int32(id),
}
optlen := unsafe.Sizeof(param)
_, _, err := getsockopt(fd, uintptr(optname), uintptr(unsafe.Pointer(&param)), uintptr(unsafe.Pointer(&optlen)))
if err != nil {
return nil, err
}
return resolveFromRawAddr(unsafe.Pointer(&param.addrs), int(param.addrNum))
}
func (c *SCTPConn) SCTPGetPrimaryPeerAddr() (*SCTPAddr, error) {
type sctpGetSetPrim struct {
assocId int32
addrs [128]byte
}
param := sctpGetSetPrim{
assocId: int32(0),
}
optlen := unsafe.Sizeof(param)
_, _, err := getsockopt(c.fd(), SCTP_PRIMARY_ADDR, uintptr(unsafe.Pointer(&param)), uintptr(unsafe.Pointer(&optlen)))
if err != nil {
return nil, err
}
return resolveFromRawAddr(unsafe.Pointer(&param.addrs), 1)
}
func (c *SCTPConn) SCTPLocalAddr(id int) (*SCTPAddr, error) {
return sctpGetAddrs(c.fd(), id, SCTP_GET_LOCAL_ADDRS)
}
func (c *SCTPConn) SCTPRemoteAddr(id int) (*SCTPAddr, error) {
return sctpGetAddrs(c.fd(), id, SCTP_GET_PEER_ADDRS)
}
func (c *SCTPConn) LocalAddr() net.Addr {
addr, err := sctpGetAddrs(c.fd(), 0, SCTP_GET_LOCAL_ADDRS)
if err != nil {
return nil
}
return addr
}
func (c *SCTPConn) RemoteAddr() net.Addr {
addr, err := sctpGetAddrs(c.fd(), 0, SCTP_GET_PEER_ADDRS)
if err != nil {
return nil
}
return addr
}
func (c *SCTPConn) PeelOff(id int) (*SCTPConn, error) {
type peeloffArg struct {
assocId int32
sd int
}
param := peeloffArg{
assocId: int32(id),
}
optlen := unsafe.Sizeof(param)
_, _, err := getsockopt(c.fd(), SCTP_SOCKOPT_PEELOFF, uintptr(unsafe.Pointer(&param)), uintptr(unsafe.Pointer(&optlen)))
if err != nil {
return nil, err
}
return &SCTPConn{_fd: int32(param.sd)}, nil
}
func (c *SCTPConn) SetDeadline(t time.Time) error {
return syscall.EOPNOTSUPP
}
func (c *SCTPConn) SetReadDeadline(t time.Time) error {
return syscall.EOPNOTSUPP
}
func (c *SCTPConn) SetWriteDeadline(t time.Time) error {
return syscall.EOPNOTSUPP
}
type SCTPListener struct {
fd int
m sync.Mutex
}
func (ln *SCTPListener) Addr() net.Addr {
laddr, err := sctpGetAddrs(ln.fd, 0, SCTP_GET_LOCAL_ADDRS)
if err != nil {
return nil
}
return laddr
}
type SCTPSndRcvInfoWrappedConn struct {
conn *SCTPConn
}
func NewSCTPSndRcvInfoWrappedConn(conn *SCTPConn) *SCTPSndRcvInfoWrappedConn {
conn.SubscribeEvents(SCTP_EVENT_DATA_IO)
return &SCTPSndRcvInfoWrappedConn{conn}
}
func (c *SCTPSndRcvInfoWrappedConn) Write(b []byte) (int, error) {
if len(b) < int(sndRcvInfoSize) {
return 0, syscall.EINVAL
}
info := (*SndRcvInfo)(unsafe.Pointer(&b[0]))
n, err := c.conn.SCTPWrite(b[sndRcvInfoSize:], info)
return n + int(sndRcvInfoSize), err
}
func (c *SCTPSndRcvInfoWrappedConn) Read(b []byte) (int, error) {
if len(b) < int(sndRcvInfoSize) {
return 0, syscall.EINVAL
}
n, info, err := c.conn.SCTPRead(b[sndRcvInfoSize:])
if err != nil {
return n, err
}
copy(b, toBuf(info))
return n + int(sndRcvInfoSize), err
}
func (c *SCTPSndRcvInfoWrappedConn) Close() error {
return c.conn.Close()
}
func (c *SCTPSndRcvInfoWrappedConn) LocalAddr() net.Addr {
return c.conn.LocalAddr()
}
func (c *SCTPSndRcvInfoWrappedConn) RemoteAddr() net.Addr {
return c.conn.RemoteAddr()
}
func (c *SCTPSndRcvInfoWrappedConn) SetDeadline(t time.Time) error {
return c.conn.SetDeadline(t)
}
func (c *SCTPSndRcvInfoWrappedConn) SetReadDeadline(t time.Time) error {
return c.conn.SetReadDeadline(t)
}
func (c *SCTPSndRcvInfoWrappedConn) SetWriteDeadline(t time.Time) error {
return c.conn.SetWriteDeadline(t)
}

227
vendor/github.com/ishidawataru/sctp/sctp_linux.go generated vendored Normal file
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@ -0,0 +1,227 @@
// +build linux,!386
package sctp
import (
"fmt"
"io"
"net"
"sync/atomic"
"syscall"
"unsafe"
)
func setsockopt(fd int, optname, optval, optlen uintptr) (uintptr, uintptr, error) {
// FIXME: syscall.SYS_SETSOCKOPT is undefined on 386
r0, r1, errno := syscall.Syscall6(syscall.SYS_SETSOCKOPT,
uintptr(fd),
SOL_SCTP,
optname,
optval,
optlen,
0)
if errno != 0 {
return r0, r1, errno
}
return r0, r1, nil
}
func getsockopt(fd int, optname, optval, optlen uintptr) (uintptr, uintptr, error) {
// FIXME: syscall.SYS_GETSOCKOPT is undefined on 386
r0, r1, errno := syscall.Syscall6(syscall.SYS_GETSOCKOPT,
uintptr(fd),
SOL_SCTP,
optname,
optval,
optlen,
0)
if errno != 0 {
return r0, r1, errno
}
return r0, r1, nil
}
func (c *SCTPConn) SCTPWrite(b []byte, info *SndRcvInfo) (int, error) {
var cbuf []byte
if info != nil {
cmsgBuf := toBuf(info)
hdr := &syscall.Cmsghdr{
Level: syscall.IPPROTO_SCTP,
Type: SCTP_CMSG_SNDRCV,
}
// bitwidth of hdr.Len is platform-specific,
// so we use hdr.SetLen() rather than directly setting hdr.Len
hdr.SetLen(syscall.CmsgSpace(len(cmsgBuf)))
cbuf = append(toBuf(hdr), cmsgBuf...)
}
return syscall.SendmsgN(c.fd(), b, cbuf, nil, 0)
}
func parseSndRcvInfo(b []byte) (*SndRcvInfo, error) {
msgs, err := syscall.ParseSocketControlMessage(b)
if err != nil {
return nil, err
}
for _, m := range msgs {
if m.Header.Level == syscall.IPPROTO_SCTP {
switch m.Header.Type {
case SCTP_CMSG_SNDRCV:
return (*SndRcvInfo)(unsafe.Pointer(&m.Data[0])), nil
}
}
}
return nil, nil
}
func (c *SCTPConn) SCTPRead(b []byte) (int, *SndRcvInfo, error) {
oob := make([]byte, 254)
for {
n, oobn, recvflags, _, err := syscall.Recvmsg(c.fd(), b, oob, 0)
if err != nil {
return n, nil, err
}
if n == 0 && oobn == 0 {
return 0, nil, io.EOF
}
if recvflags&MSG_NOTIFICATION > 0 && c.notificationHandler != nil {
if err := c.notificationHandler(b[:n]); err != nil {
return 0, nil, err
}
} else {
var info *SndRcvInfo
if oobn > 0 {
info, err = parseSndRcvInfo(oob[:oobn])
}
return n, info, err
}
}
}
func (c *SCTPConn) Close() error {
if c != nil {
fd := atomic.SwapInt32(&c._fd, -1)
if fd > 0 {
info := &SndRcvInfo{
Flags: SCTP_EOF,
}
c.SCTPWrite(nil, info)
syscall.Shutdown(int(fd), syscall.SHUT_RDWR)
return syscall.Close(int(fd))
}
}
return syscall.EBADF
}
func ListenSCTP(net string, laddr *SCTPAddr) (*SCTPListener, error) {
af := syscall.AF_INET
switch net {
case "sctp":
hasv6 := func(addr *SCTPAddr) bool {
if addr == nil {
return false
}
for _, ip := range addr.IP {
if ip.To4() == nil {
return true
}
}
return false
}
if hasv6(laddr) {
af = syscall.AF_INET6
}
case "sctp4":
case "sctp6":
af = syscall.AF_INET6
default:
return nil, fmt.Errorf("invalid net: %s", net)
}
sock, err := syscall.Socket(
af,
syscall.SOCK_STREAM,
syscall.IPPROTO_SCTP,
)
if err != nil {
return nil, err
}
err = setNumOstreams(sock, SCTP_MAX_STREAM)
if err != nil {
return nil, err
}
if laddr != nil && len(laddr.IP) != 0 {
err := SCTPBind(sock, laddr, SCTP_BINDX_ADD_ADDR)
if err != nil {
return nil, err
}
}
err = syscall.Listen(sock, syscall.SOMAXCONN)
if err != nil {
return nil, err
}
return &SCTPListener{
fd: sock,
}, nil
}
func (ln *SCTPListener) Accept() (net.Conn, error) {
fd, _, err := syscall.Accept4(ln.fd, 0)
return NewSCTPConn(fd, nil), err
}
func (ln *SCTPListener) Close() error {
syscall.Shutdown(ln.fd, syscall.SHUT_RDWR)
return syscall.Close(ln.fd)
}
func DialSCTP(net string, laddr, raddr *SCTPAddr) (*SCTPConn, error) {
af := syscall.AF_INET
switch net {
case "sctp":
hasv6 := func(addr *SCTPAddr) bool {
if addr == nil {
return false
}
for _, ip := range addr.IP {
if ip.To4() == nil {
return true
}
}
return false
}
if hasv6(laddr) || hasv6(raddr) {
af = syscall.AF_INET6
}
case "sctp4":
case "sctp6":
af = syscall.AF_INET6
default:
return nil, fmt.Errorf("invalid net: %s", net)
}
sock, err := syscall.Socket(
af,
syscall.SOCK_STREAM,
syscall.IPPROTO_SCTP,
)
if err != nil {
return nil, err
}
err = setNumOstreams(sock, SCTP_MAX_STREAM)
if err != nil {
return nil, err
}
if laddr != nil {
err := SCTPBind(sock, laddr, SCTP_BINDX_ADD_ADDR)
if err != nil {
return nil, err
}
}
_, err = SCTPConnect(sock, raddr)
if err != nil {
return nil, err
}
return NewSCTPConn(sock, nil), nil
}

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@ -0,0 +1,47 @@
// +build !linux linux,386
package sctp
import (
"errors"
"net"
"runtime"
)
var ErrUnsupported = errors.New("SCTP is unsupported on " + runtime.GOOS + "/" + runtime.GOARCH)
func setsockopt(fd int, optname, optval, optlen uintptr) (uintptr, uintptr, error) {
return 0, 0, ErrUnsupported
}
func getsockopt(fd int, optname, optval, optlen uintptr) (uintptr, uintptr, error) {
return 0, 0, ErrUnsupported
}
func (c *SCTPConn) SCTPWrite(b []byte, info *SndRcvInfo) (int, error) {
return 0, ErrUnsupported
}
func (c *SCTPConn) SCTPRead(b []byte) (int, *SndRcvInfo, error) {
return 0, nil, ErrUnsupported
}
func (c *SCTPConn) Close() error {
return ErrUnsupported
}
func ListenSCTP(net string, laddr *SCTPAddr) (*SCTPListener, error) {
return nil, ErrUnsupported
}
func (ln *SCTPListener) Accept() (net.Conn, error) {
return nil, ErrUnsupported
}
func (ln *SCTPListener) Close() error {
return ErrUnsupported
}
func DialSCTP(net string, laddr, raddr *SCTPAddr) (*SCTPConn, error) {
return nil, ErrUnsupported
}