core

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 Go to latest Published: Apr 6, 2020 License: MIT Imports: 27 Imported by: 0

README

fensor

"fensor" means "f**k censor(ship)", it's a tool for circumventing censorship.

This project is based on v2ray, and the modifications are mainly guided by the paper Incentivizing censorship measurements via circumvention from SIGCOMM'18.

Modifications

On mechanism - adaptive circumvention on the fly

Every URL will be stored as a tuple (URL, status) in a Redis database, fensor will choose different proxy protocol based on the URL status.

URL status Protocol
DNS blocked Freedom
TCP conn. blocked/reset Shadowsocks/Vmess
Wrong/Blank webpage returned Shadowsocks/Vmess
On protocols

Playground for development

  1. Make sure you have golang install on your computer, and your GOPATH is set properly.
  2. Pull the code by go get -u github.com/jiahao42/fensor
  3. Run fensor/playground/build.sh, and you shall see two executables: v2ray and v2ctl under fensor/playground.
  4. Run fensor/playground/run.sh, v2ray will run as both client and server separately on your computer with the default config file (inbound.json and outbound.json). Check the status of client and server by using screen -r v2ray.
  5. Set your proxy properly (e.g. in your browser) and you are ready to go.

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

Constants

This section is empty.

Variables

This section is empty.

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 interface{}) (*Config, error)

LoadConfig loads config with given format from given source. input accepts 2 different types: * []string slice of multiple filename/url(s) to open to read * io.Reader that reads a config content (the original way)

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 deprecated 

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 interface{}) (*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.

Source Files

View all Source files

Directories

Path Synopsis
app
Package app contains feature implementations of V2Ray.
 Package app contains feature implementations of V2Ray.
commander
dispatcher
dns
Package dns is an implementation of core.DNS feature.
 Package dns is an implementation of core.DNS feature.
log
log/command
policy
Package policy is an implementation of policy.Manager feature.
 Package policy is an implementation of policy.Manager feature.
proxyman
Package proxyman defines applications for managing inbound and outbound proxies.
 Package proxyman defines applications for managing inbound and outbound proxies.
proxyman/command
proxyman/inbound
proxyman/outbound
reverse
router
stats
stats/command
Package common contains common utilities that are shared among other packages.
 Package common contains common utilities that are shared among other packages.
bitmask
buf
Package buf provides a light-weight memory allocation mechanism.
 Package buf provides a light-weight memory allocation mechanism.
bytespool
cmdarg
crypto
Package crypto provides common crypto libraries for V2Ray.
 Package crypto provides common crypto libraries for V2Ray.
crypto/internal
db
db/model
dice
Package dice contains common functions to generate random number.
 Package dice contains common functions to generate random number.
errors
Package errors is a drop-in replacement for Golang lib 'errors'.
 Package errors is a drop-in replacement for Golang lib 'errors'.
errors/errorgen
log
mux
net
Package net is a drop-in replacement to Golang's net package, with some more functionalities.
 Package net is a drop-in replacement to Golang's net package, with some more functionalities.
peer
platform
platform/ctlcmd
platform/filesystem
protocol
protocol/bittorrent
protocol/dns
protocol/http
protocol/tls
protocol/tls/cert
protocol/udp
retry
serial
session
Package session provides functions for sessions of incoming requests.
 Package session provides functions for sessions of incoming requests.
signal
signal/done
signal/pubsub
signal/semaphore
stack
strmatcher
task
uuid
external
github.com/cheekybits/genny/generic
Package generic contains the generic marker types.
 Package generic contains the generic marker types.
github.com/cloudflare/sidh/internal/arith
github.com/cloudflare/sidh/internal/isogeny
github.com/cloudflare/sidh/internal/utils
github.com/cloudflare/sidh/p503
github.com/cloudflare/sidh/p751
github.com/cloudflare/sidh/sidh
github.com/lucas-clemente/quic-go
github.com/lucas-clemente/quic-go/internal/ackhandler
github.com/lucas-clemente/quic-go/internal/congestion
github.com/lucas-clemente/quic-go/internal/crypto
github.com/lucas-clemente/quic-go/internal/flowcontrol
github.com/lucas-clemente/quic-go/internal/handshake
github.com/lucas-clemente/quic-go/internal/protocol
github.com/lucas-clemente/quic-go/internal/qerr
github.com/lucas-clemente/quic-go/internal/utils
github.com/lucas-clemente/quic-go/internal/utils/linkedlist
github.com/lucas-clemente/quic-go/internal/wire
github.com/marten-seemann/qtls
Package tls partially implements TLS 1.2, as specified in RFC 5246.
 Package tls partially implements TLS 1.2, as specified in RFC 5246.
dns
dns/localdns
inbound
outbound
policy
routing
stats
infra
conf
conf/command
conf/json
conf/serial
control
control/main
vprotogen
confloader
confloader/external
distro/all
distro/debug
json
jsonem
Package proxy contains all proxies used by V2Ray.
 Package proxy contains all proxies used by V2Ray.
blackhole
dns
dokodemo
freedom
http
mtproto
shadowsocks
Package shadowsocks provides compatible functionality to Shadowsocks.
 Package shadowsocks provides compatible functionality to Shadowsocks.
socks
Package socks provides implements of Socks protocol 4, 4a and 5.
 Package socks provides implements of Socks protocol 4, 4a and 5.
vmess
Package vmess contains the implementation of VMess protocol and transportation.
 Package vmess contains the implementation of VMess protocol and transportation.
vmess/encoding
vmess/inbound
vmess/outbound
testing
mocks
Package mocks is a generated GoMock package.
 Package mocks is a generated GoMock package.
scenarios
servers/http
servers/tcp
servers/udp
internet
internet/domainsocket
internet/headers/http
internet/headers/noop
internet/headers/srtp
internet/headers/tls
internet/headers/utp
internet/headers/wechat
internet/headers/wireguard
internet/http
internet/kcp
Package kcp - A Fast and Reliable ARQ Protocol Acknowledgement: skywind3000@github for inventing the KCP protocol xtaci@github for translating to Golang
 Package kcp - A Fast and Reliable ARQ Protocol Acknowledgement: skywind3000@github for inventing the KCP protocol xtaci@github for translating to Golang
internet/quic
internet/tcp
internet/tls
internet/udp
internet/websocket
Package websocket implements Websocket transport Websocket transport implements an HTTP(S) compliable, surveillance proof transport method with plausible deniability.
 Package websocket implements Websocket transport Websocket transport implements an HTTP(S) compliable, surveillance proof transport method with plausible deniability.
pipe

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