core

README

Project V

Project V is a set of network tools that help you to build your own computer network. It secures your network connections and thus protects your privacy. See our website for more information.

License

The MIT License (MIT)

Credits

This repo relies on the following third-party projects:

• In production:
  • gorilla/websocket
  • gRPC
• For testing only:
  • miekg/dns
  • h12w/socks

Documentation

Overview

Package core provides an entry point to use V2Ray core functionalities.

V2Ray makes it possible to accept incoming network connections with certain protocol, process the data, and send them through another connection with the same or a difference protocol on demand.

It may be configured to work with multiple protocols at the same time, and uses the internal router to tunnel through different inbound and outbound connections.

Index

• func AddInboundHandler(server *Instance, config *InboundHandlerConfig) error
• func AddOutboundHandler(server *Instance, config *OutboundHandlerConfig) error
• func CreateObject(v *Instance, config interface{}) (interface{}, error)
• func Dial(ctx context.Context, v *Instance, dest net.Destination) (net.Conn, error)
• func DialUDP(ctx context.Context, v *Instance) (net.PacketConn, error)
• func RegisterConfigLoader(format *ConfigFormat) error
• func RequireFeatures(ctx context.Context, callback interface{}) error
• func ServerType() interface{}
• func Version() string
• func VersionStatement() []string
• type Annotation
• type Config
  • func LoadConfig(formatName string, filename string, input io.Reader) (*Config, error)
  • func (*Config) Descriptor() ([]byte, []int)
  • func (m *Config) GetApp() []*serial.TypedMessage
  • func (m *Config) GetExtension() []*serial.TypedMessage
  • func (m *Config) GetInbound() []*InboundHandlerConfig
  • func (m *Config) GetOutbound() []*OutboundHandlerConfig
  • func (m *Config) GetTransport() *transport.Config
  • func (*Config) ProtoMessage()
  • func (m *Config) Reset()
  • func (m *Config) String() string
  • func (m *Config) XXX_DiscardUnknown()
  • func (m *Config) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)
  • func (m *Config) XXX_Merge(src proto.Message)
  • func (m *Config) XXX_Size() int
  • func (m *Config) XXX_Unmarshal(b []byte) error
• type ConfigFormat
• type ConfigLoader
• type InboundHandlerConfig
  • func (*InboundHandlerConfig) Descriptor() ([]byte, []int)
  • func (m *InboundHandlerConfig) GetProxySettings() *serial.TypedMessage
  • func (m *InboundHandlerConfig) GetReceiverSettings() *serial.TypedMessage
  • func (m *InboundHandlerConfig) GetTag() string
  • func (*InboundHandlerConfig) ProtoMessage()
  • func (m *InboundHandlerConfig) Reset()
  • func (m *InboundHandlerConfig) String() string
  • func (m *InboundHandlerConfig) XXX_DiscardUnknown()
  • func (m *InboundHandlerConfig) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)
  • func (m *InboundHandlerConfig) XXX_Merge(src proto.Message)
  • func (m *InboundHandlerConfig) XXX_Size() int
  • func (m *InboundHandlerConfig) XXX_Unmarshal(b []byte) error
• type Instance
  • func FromContext(ctx context.Context) *Instance
  • func MustFromContext(ctx context.Context) *Instance
  • func New(config *Config) (*Instance, error)
  • func StartInstance(configFormat string, configBytes []byte) (*Instance, error)
  • func (s *Instance) AddFeature(feature features.Feature) error
  • func (s *Instance) Close() error
  • func (s *Instance) GetFeature(featureType interface{}) features.Feature
  • func (s *Instance) RequireFeatures(callback interface{}) error
  • func (s *Instance) Start() error
  • func (s *Instance) Type() interface{}
• type OutboundHandlerConfig
  • func (*OutboundHandlerConfig) Descriptor() ([]byte, []int)
  • func (m *OutboundHandlerConfig) GetComment() string
  • func (m *OutboundHandlerConfig) GetExpire() int64
  • func (m *OutboundHandlerConfig) GetProxySettings() *serial.TypedMessage
  • func (m *OutboundHandlerConfig) GetSenderSettings() *serial.TypedMessage
  • func (m *OutboundHandlerConfig) GetTag() string
  • func (*OutboundHandlerConfig) ProtoMessage()
  • func (m *OutboundHandlerConfig) Reset()
  • func (m *OutboundHandlerConfig) String() string
  • func (m *OutboundHandlerConfig) XXX_DiscardUnknown()
  • func (m *OutboundHandlerConfig) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)
  • func (m *OutboundHandlerConfig) XXX_Merge(src proto.Message)
  • func (m *OutboundHandlerConfig) XXX_Size() int
  • func (m *OutboundHandlerConfig) XXX_Unmarshal(b []byte) error
• type Server

Functions

func AddInboundHandler

func AddInboundHandler(server *Instance, config *InboundHandlerConfig) error

func AddOutboundHandler

func AddOutboundHandler(server *Instance, config *OutboundHandlerConfig) error

func CreateObject

func CreateObject(v *Instance, config interface{}) (interface{}, error)

CreateObject creates a new object based on the given V2Ray instance and config. The V2Ray instance may be nil.

func Dial

func Dial(ctx context.Context, v *Instance, dest net.Destination) (net.Conn, error)

Dial provides an easy way for upstream caller to create net.Conn through V2Ray. It dispatches the request to the given destination by the given V2Ray instance. Since it is under a proxy context, the LocalAddr() and RemoteAddr() in returned net.Conn will not show real addresses being used for communication.

v2ray:api:stable

func DialUDP

func DialUDP(ctx context.Context, v *Instance) (net.PacketConn, error)

DialUDP provides a way to exchange UDP packets through V2Ray instance to remote servers. Since it is under a proxy context, the LocalAddr() in returned PacketConn will not show the real address.

TODO: SetDeadline() / SetReadDeadline() / SetWriteDeadline() are not implemented.

v2ray:api:beta

func RegisterConfigLoader

func RegisterConfigLoader(format *ConfigFormat) error

RegisterConfigLoader add a new ConfigLoader.

func RequireFeatures

func RequireFeatures(ctx context.Context, callback interface{}) error

RequireFeatures is a helper function to require features from Instance in context. See Instance.RequireFeatures for more information.

func ServerType

func ServerType() interface{}

ServerType returns the type of the server.

func Version

func Version() string

Version returns V2Ray's version as a string, in the form of "x.y.z" where x, y and z are numbers. ".z" part may be omitted in regular releases.

func VersionStatement

func VersionStatement() []string

VersionStatement returns a list of strings representing the full version info.

Types

type Annotation

type Annotation struct {
	// API is for types or functions that can be used in other libs. Possible values are:
	//
	// * v2ray:api:beta for types or functions that are ready for use, but maybe changed in the future.
	// * v2ray:api:stable for types or functions with guarantee of backward compatibility.
	// * v2ray:api:deprecated for types or functions that should not be used anymore.
	//
	// Types or functions without api annotation should not be used externally.
	API string
}

Annotation is a concept in V2Ray. This struct is only for documentation. It is not used anywhere. Annotations begin with "v2ray:" in comment, as metadata of functions or types.

type Config

type Config struct {
	// Inbound handler configurations. Must have at least one item.
	Inbound []*InboundHandlerConfig `protobuf:"bytes,1,rep,name=inbound,proto3" json:"inbound,omitempty"`
	// Outbound handler configurations. Must have at least one item. The first item is used as default for routing.
	Outbound []*OutboundHandlerConfig `protobuf:"bytes,2,rep,name=outbound,proto3" json:"outbound,omitempty"`
	// App is for configurations of all features in V2Ray. A feature must implement the Feature interface, and its config type must be registered through common.RegisterConfig.
	App []*serial.TypedMessage `protobuf:"bytes,4,rep,name=app,proto3" json:"app,omitempty"`
	// Transport settings.
	// Deprecated. Each inbound and outbound should choose their own transport config.
	// Date to remove: 2020-01-13
	Transport *transport.Config `protobuf:"bytes,5,opt,name=transport,proto3" json:"transport,omitempty"` // Deprecated: Do not use.
	// Configuration for extensions. The config may not work if corresponding extension is not loaded into V2Ray.
	// V2Ray will ignore such config during initialization.
	Extension            []*serial.TypedMessage `protobuf:"bytes,6,rep,name=extension,proto3" json:"extension,omitempty"`
	XXX_NoUnkeyedLiteral struct{}               `json:"-"`
	XXX_unrecognized     []byte                 `json:"-"`
	XXX_sizecache        int32                  `json:"-"`
}

Config is the master config of V2Ray. V2Ray takes this config as input and functions accordingly.

func LoadConfig

func LoadConfig(formatName string, filename string, input io.Reader) (*Config, error)

LoadConfig loads config with given format from given source.

func (*Config) Descriptor

func (*Config) Descriptor() ([]byte, []int)

func (*Config) GetApp

func (m *Config) GetApp() []*serial.TypedMessage

func (*Config) GetExtension

func (m *Config) GetExtension() []*serial.TypedMessage

func (*Config) GetInbound

func (m *Config) GetInbound() []*InboundHandlerConfig

func (*Config) GetOutbound

func (m *Config) GetOutbound() []*OutboundHandlerConfig

func (*Config) GetTransport

func (m *Config) GetTransport() *transport.Config

Deprecated: Do not use.

func (*Config) ProtoMessage

func (*Config) ProtoMessage()

func (*Config) Reset

func (m *Config) Reset()

func (*Config) String

func (m *Config) String() string

func (*Config) XXX_DiscardUnknown

func (m *Config) XXX_DiscardUnknown()

func (*Config) XXX_Marshal

func (m *Config) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*Config) XXX_Merge

func (m *Config) XXX_Merge(src proto.Message)

func (*Config) XXX_Size

func (m *Config) XXX_Size() int

func (*Config) XXX_Unmarshal

func (m *Config) XXX_Unmarshal(b []byte) error

type ConfigFormat

type ConfigFormat struct {
	Name      string
	Extension []string
	Loader    ConfigLoader
}

ConfigFormat is a configurable format of V2Ray config file.

type ConfigLoader

type ConfigLoader func(input io.Reader) (*Config, error)

ConfigLoader is a utility to load V2Ray config from external source.

type InboundHandlerConfig

type InboundHandlerConfig struct {
	// Tag of the inbound handler. The tag must be unique among all inbound handlers
	Tag string `protobuf:"bytes,1,opt,name=tag,proto3" json:"tag,omitempty"`
	// Settings for how this inbound proxy is handled.
	ReceiverSettings *serial.TypedMessage `protobuf:"bytes,2,opt,name=receiver_settings,json=receiverSettings,proto3" json:"receiver_settings,omitempty"`
	// Settings for inbound proxy. Must be one of the inbound proxies.
	ProxySettings        *serial.TypedMessage `protobuf:"bytes,3,opt,name=proxy_settings,json=proxySettings,proto3" json:"proxy_settings,omitempty"`
	XXX_NoUnkeyedLiteral struct{}             `json:"-"`
	XXX_unrecognized     []byte               `json:"-"`
	XXX_sizecache        int32                `json:"-"`
}

InboundHandlerConfig is the configuration for inbound handler.

func (*InboundHandlerConfig) Descriptor

func (*InboundHandlerConfig) Descriptor() ([]byte, []int)

func (*InboundHandlerConfig) GetProxySettings

func (m *InboundHandlerConfig) GetProxySettings() *serial.TypedMessage

func (*InboundHandlerConfig) GetReceiverSettings

func (m *InboundHandlerConfig) GetReceiverSettings() *serial.TypedMessage

func (*InboundHandlerConfig) GetTag

func (m *InboundHandlerConfig) GetTag() string

func (*InboundHandlerConfig) ProtoMessage

func (*InboundHandlerConfig) ProtoMessage()

func (*InboundHandlerConfig) Reset

func (m *InboundHandlerConfig) Reset()

func (*InboundHandlerConfig) String

func (m *InboundHandlerConfig) String() string

func (*InboundHandlerConfig) XXX_DiscardUnknown

func (m *InboundHandlerConfig) XXX_DiscardUnknown()

func (*InboundHandlerConfig) XXX_Marshal

func (m *InboundHandlerConfig) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*InboundHandlerConfig) XXX_Merge

func (m *InboundHandlerConfig) XXX_Merge(src proto.Message)

func (*InboundHandlerConfig) XXX_Size

func (m *InboundHandlerConfig) XXX_Size() int

func (*InboundHandlerConfig) XXX_Unmarshal

func (m *InboundHandlerConfig) XXX_Unmarshal(b []byte) error

type Instance

type Instance struct {
	// contains filtered or unexported fields
}

Instance combines all functionalities in V2Ray.

func FromContext

func FromContext(ctx context.Context) *Instance

FromContext returns an Instance from the given context, or nil if the context doesn't contain one.

func MustFromContext

func MustFromContext(ctx context.Context) *Instance

MustFromContext returns an Instance from the given context, or panics if not present.

func New

func New(config *Config) (*Instance, error)

New returns a new V2Ray instance based on given configuration. The instance is not started at this point. To ensure V2Ray instance works properly, the config must contain one Dispatcher, one InboundHandlerManager and one OutboundHandlerManager. Other features are optional.

func StartInstance

func StartInstance(configFormat string, configBytes []byte) (*Instance, error)

StartInstance starts a new V2Ray instance with given serialized config. By default V2Ray only support config in protobuf format, i.e., configFormat = "protobuf". Caller need to load other packages to add JSON support.

v2ray:api:stable

func (*Instance) AddFeature

func (s *Instance) AddFeature(feature features.Feature) error

AddFeature registers a feature into current Instance.

func (*Instance) Close

func (s *Instance) Close() error

Close shutdown the V2Ray instance.

func (*Instance) GetFeature

func (s *Instance) GetFeature(featureType interface{}) features.Feature

GetFeature returns a feature of the given type, or nil if such feature is not registered.

func (*Instance) RequireFeatures

func (s *Instance) RequireFeatures(callback interface{}) error

RequireFeatures registers a callback, which will be called when all dependent features are registered. The callback must be a func(). All its parameters must be features.Feature.

func (*Instance) Start

func (s *Instance) Start() error

Start starts the V2Ray instance, including all registered features. When Start returns error, the state of the instance is unknown. A V2Ray instance can be started only once. Upon closing, the instance is not guaranteed to start again.

v2ray:api:stable

func (*Instance) Type

func (s *Instance) Type() interface{}

Type implements common.HasType.

type OutboundHandlerConfig

type OutboundHandlerConfig struct {
	// Tag of this outbound handler.
	Tag string `protobuf:"bytes,1,opt,name=tag,proto3" json:"tag,omitempty"`
	// Settings for how to dial connection for this outbound handler.
	SenderSettings *serial.TypedMessage `protobuf:"bytes,2,opt,name=sender_settings,json=senderSettings,proto3" json:"sender_settings,omitempty"`
	// Settings for this outbound proxy. Must be one of the outbound proxies.
	ProxySettings *serial.TypedMessage `protobuf:"bytes,3,opt,name=proxy_settings,json=proxySettings,proto3" json:"proxy_settings,omitempty"`
	// If not zero, this outbound will be expired in seconds. Not used for now.
	Expire int64 `protobuf:"varint,4,opt,name=expire,proto3" json:"expire,omitempty"`
	// Comment of this outbound handler. Not used for now.
	Comment              string   `protobuf:"bytes,5,opt,name=comment,proto3" json:"comment,omitempty"`
	XXX_NoUnkeyedLiteral struct{} `json:"-"`
	XXX_unrecognized     []byte   `json:"-"`
	XXX_sizecache        int32    `json:"-"`
}

OutboundHandlerConfig is the configuration for outbound handler.

func (*OutboundHandlerConfig) Descriptor

func (*OutboundHandlerConfig) Descriptor() ([]byte, []int)

func (*OutboundHandlerConfig) GetComment

func (m *OutboundHandlerConfig) GetComment() string

func (*OutboundHandlerConfig) GetExpire

func (m *OutboundHandlerConfig) GetExpire() int64

func (*OutboundHandlerConfig) GetProxySettings

func (m *OutboundHandlerConfig) GetProxySettings() *serial.TypedMessage

func (*OutboundHandlerConfig) GetSenderSettings

func (m *OutboundHandlerConfig) GetSenderSettings() *serial.TypedMessage

func (*OutboundHandlerConfig) GetTag

func (m *OutboundHandlerConfig) GetTag() string

func (*OutboundHandlerConfig) ProtoMessage

func (*OutboundHandlerConfig) ProtoMessage()

func (*OutboundHandlerConfig) Reset

func (m *OutboundHandlerConfig) Reset()

func (*OutboundHandlerConfig) String

func (m *OutboundHandlerConfig) String() string

func (*OutboundHandlerConfig) XXX_DiscardUnknown

func (m *OutboundHandlerConfig) XXX_DiscardUnknown()

func (*OutboundHandlerConfig) XXX_Marshal

func (m *OutboundHandlerConfig) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*OutboundHandlerConfig) XXX_Merge

func (m *OutboundHandlerConfig) XXX_Merge(src proto.Message)

func (*OutboundHandlerConfig) XXX_Size

func (m *OutboundHandlerConfig) XXX_Size() int

func (*OutboundHandlerConfig) XXX_Unmarshal

func (m *OutboundHandlerConfig) XXX_Unmarshal(b []byte) error

type Server

type Server interface {
	common.Runnable
}

Server is an instance of V2Ray. At any time, there must be at most one Server instance running.