mirror of
https://github.com/v2fly/v2ray-core.git
synced 2024-11-18 02:16:10 -05:00
240 lines
7.5 KiB
Go
240 lines
7.5 KiB
Go
package outbound
|
|
|
|
import (
|
|
"context"
|
|
|
|
core "github.com/v2fly/v2ray-core/v4"
|
|
"github.com/v2fly/v2ray-core/v4/app/proxyman"
|
|
"github.com/v2fly/v2ray-core/v4/common"
|
|
"github.com/v2fly/v2ray-core/v4/common/mux"
|
|
"github.com/v2fly/v2ray-core/v4/common/net"
|
|
"github.com/v2fly/v2ray-core/v4/common/session"
|
|
"github.com/v2fly/v2ray-core/v4/features/outbound"
|
|
"github.com/v2fly/v2ray-core/v4/features/policy"
|
|
"github.com/v2fly/v2ray-core/v4/features/stats"
|
|
"github.com/v2fly/v2ray-core/v4/proxy"
|
|
"github.com/v2fly/v2ray-core/v4/transport"
|
|
"github.com/v2fly/v2ray-core/v4/transport/internet"
|
|
"github.com/v2fly/v2ray-core/v4/transport/internet/tls"
|
|
"github.com/v2fly/v2ray-core/v4/transport/pipe"
|
|
)
|
|
|
|
func getStatCounter(v *core.Instance, tag string) (stats.Counter, stats.Counter) {
|
|
var uplinkCounter stats.Counter
|
|
var downlinkCounter stats.Counter
|
|
|
|
policy := v.GetFeature(policy.ManagerType()).(policy.Manager)
|
|
if len(tag) > 0 && policy.ForSystem().Stats.OutboundUplink {
|
|
statsManager := v.GetFeature(stats.ManagerType()).(stats.Manager)
|
|
name := "outbound>>>" + tag + ">>>traffic>>>uplink"
|
|
c, _ := stats.GetOrRegisterCounter(statsManager, name)
|
|
if c != nil {
|
|
uplinkCounter = c
|
|
}
|
|
}
|
|
if len(tag) > 0 && policy.ForSystem().Stats.OutboundDownlink {
|
|
statsManager := v.GetFeature(stats.ManagerType()).(stats.Manager)
|
|
name := "outbound>>>" + tag + ">>>traffic>>>downlink"
|
|
c, _ := stats.GetOrRegisterCounter(statsManager, name)
|
|
if c != nil {
|
|
downlinkCounter = c
|
|
}
|
|
}
|
|
|
|
return uplinkCounter, downlinkCounter
|
|
}
|
|
|
|
// Handler is an implements of outbound.Handler.
|
|
type Handler struct {
|
|
tag string
|
|
senderSettings *proxyman.SenderConfig
|
|
streamSettings *internet.MemoryStreamConfig
|
|
proxy proxy.Outbound
|
|
outboundManager outbound.Manager
|
|
mux *mux.ClientManager
|
|
uplinkCounter stats.Counter
|
|
downlinkCounter stats.Counter
|
|
}
|
|
|
|
// NewHandler create a new Handler based on the given configuration.
|
|
func NewHandler(ctx context.Context, config *core.OutboundHandlerConfig) (outbound.Handler, error) {
|
|
v := core.MustFromContext(ctx)
|
|
uplinkCounter, downlinkCounter := getStatCounter(v, config.Tag)
|
|
h := &Handler{
|
|
tag: config.Tag,
|
|
outboundManager: v.GetFeature(outbound.ManagerType()).(outbound.Manager),
|
|
uplinkCounter: uplinkCounter,
|
|
downlinkCounter: downlinkCounter,
|
|
}
|
|
|
|
if config.SenderSettings != nil {
|
|
senderSettings, err := config.SenderSettings.GetInstance()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
switch s := senderSettings.(type) {
|
|
case *proxyman.SenderConfig:
|
|
h.senderSettings = s
|
|
mss, err := internet.ToMemoryStreamConfig(s.StreamSettings)
|
|
if err != nil {
|
|
return nil, newError("failed to parse stream settings").Base(err).AtWarning()
|
|
}
|
|
h.streamSettings = mss
|
|
default:
|
|
return nil, newError("settings is not SenderConfig")
|
|
}
|
|
}
|
|
|
|
proxyConfig, err := config.ProxySettings.GetInstance()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
rawProxyHandler, err := common.CreateObject(ctx, proxyConfig)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
proxyHandler, ok := rawProxyHandler.(proxy.Outbound)
|
|
if !ok {
|
|
return nil, newError("not an outbound handler")
|
|
}
|
|
|
|
if h.senderSettings != nil && h.senderSettings.MultiplexSettings != nil {
|
|
config := h.senderSettings.MultiplexSettings
|
|
if config.Concurrency < 1 || config.Concurrency > 1024 {
|
|
return nil, newError("invalid mux concurrency: ", config.Concurrency).AtWarning()
|
|
}
|
|
h.mux = &mux.ClientManager{
|
|
Enabled: h.senderSettings.MultiplexSettings.Enabled,
|
|
Picker: &mux.IncrementalWorkerPicker{
|
|
Factory: mux.NewDialingWorkerFactory(
|
|
ctx,
|
|
proxyHandler,
|
|
h,
|
|
mux.ClientStrategy{
|
|
MaxConcurrency: config.Concurrency,
|
|
MaxConnection: 128,
|
|
},
|
|
),
|
|
},
|
|
}
|
|
}
|
|
|
|
h.proxy = proxyHandler
|
|
return h, nil
|
|
}
|
|
|
|
// Tag implements outbound.Handler.
|
|
func (h *Handler) Tag() string {
|
|
return h.tag
|
|
}
|
|
|
|
// Dispatch implements proxy.Outbound.Dispatch.
|
|
func (h *Handler) Dispatch(ctx context.Context, link *transport.Link) {
|
|
if h.mux != nil && (h.mux.Enabled || session.MuxPreferedFromContext(ctx)) {
|
|
if err := h.mux.Dispatch(ctx, link); err != nil {
|
|
err := newError("failed to process mux outbound traffic").Base(err)
|
|
session.SubmitOutboundErrorToOriginator(ctx, err)
|
|
err.WriteToLog(session.ExportIDToError(ctx))
|
|
common.Interrupt(link.Writer)
|
|
}
|
|
} else {
|
|
if err := h.proxy.Process(ctx, link, h); err != nil {
|
|
// Ensure outbound ray is properly closed.
|
|
err := newError("failed to process outbound traffic").Base(err)
|
|
session.SubmitOutboundErrorToOriginator(ctx, err)
|
|
err.WriteToLog(session.ExportIDToError(ctx))
|
|
common.Interrupt(link.Writer)
|
|
} else {
|
|
common.Must(common.Close(link.Writer))
|
|
}
|
|
common.Interrupt(link.Reader)
|
|
}
|
|
}
|
|
|
|
// Address implements internet.Dialer.
|
|
func (h *Handler) Address() net.Address {
|
|
if h.senderSettings == nil || h.senderSettings.Via == nil {
|
|
return nil
|
|
}
|
|
return h.senderSettings.Via.AsAddress()
|
|
}
|
|
|
|
// Dial implements internet.Dialer.
|
|
func (h *Handler) Dial(ctx context.Context, dest net.Destination) (internet.Connection, error) {
|
|
if h.senderSettings != nil {
|
|
if h.senderSettings.ProxySettings.HasTag() && !h.senderSettings.ProxySettings.TransportLayerProxy {
|
|
tag := h.senderSettings.ProxySettings.Tag
|
|
handler := h.outboundManager.GetHandler(tag)
|
|
if handler != nil {
|
|
newError("proxying to ", tag, " for dest ", dest).AtDebug().WriteToLog(session.ExportIDToError(ctx))
|
|
ctx = session.ContextWithOutbound(ctx, &session.Outbound{
|
|
Target: dest,
|
|
})
|
|
|
|
opts := pipe.OptionsFromContext(ctx)
|
|
uplinkReader, uplinkWriter := pipe.New(opts...)
|
|
downlinkReader, downlinkWriter := pipe.New(opts...)
|
|
|
|
go handler.Dispatch(ctx, &transport.Link{Reader: uplinkReader, Writer: downlinkWriter})
|
|
conn := net.NewConnection(net.ConnectionInputMulti(uplinkWriter), net.ConnectionOutputMulti(downlinkReader))
|
|
|
|
if config := tls.ConfigFromStreamSettings(h.streamSettings); config != nil {
|
|
tlsConfig := config.GetTLSConfig(tls.WithDestination(dest))
|
|
conn = tls.Client(conn, tlsConfig)
|
|
}
|
|
|
|
return h.getStatCouterConnection(conn), nil
|
|
}
|
|
|
|
newError("failed to get outbound handler with tag: ", tag).AtWarning().WriteToLog(session.ExportIDToError(ctx))
|
|
}
|
|
|
|
if h.senderSettings.Via != nil {
|
|
outbound := session.OutboundFromContext(ctx)
|
|
if outbound == nil {
|
|
outbound = new(session.Outbound)
|
|
ctx = session.ContextWithOutbound(ctx, outbound)
|
|
}
|
|
outbound.Gateway = h.senderSettings.Via.AsAddress()
|
|
}
|
|
}
|
|
|
|
if h.senderSettings != nil && h.senderSettings.ProxySettings != nil && h.senderSettings.ProxySettings.HasTag() && h.senderSettings.ProxySettings.TransportLayerProxy {
|
|
tag := h.senderSettings.ProxySettings.Tag
|
|
newError("transport layer proxying to ", tag, " for dest ", dest).AtDebug().WriteToLog(session.ExportIDToError(ctx))
|
|
ctx = session.SetTransportLayerProxyTagToContext(ctx, tag)
|
|
}
|
|
|
|
conn, err := internet.Dial(ctx, dest, h.streamSettings)
|
|
return h.getStatCouterConnection(conn), err
|
|
}
|
|
|
|
func (h *Handler) getStatCouterConnection(conn internet.Connection) internet.Connection {
|
|
if h.uplinkCounter != nil || h.downlinkCounter != nil {
|
|
return &internet.StatCouterConnection{
|
|
Connection: conn,
|
|
ReadCounter: h.downlinkCounter,
|
|
WriteCounter: h.uplinkCounter,
|
|
}
|
|
}
|
|
return conn
|
|
}
|
|
|
|
// GetOutbound implements proxy.GetOutbound.
|
|
func (h *Handler) GetOutbound() proxy.Outbound {
|
|
return h.proxy
|
|
}
|
|
|
|
// Start implements common.Runnable.
|
|
func (h *Handler) Start() error {
|
|
return nil
|
|
}
|
|
|
|
// Close implements common.Closable.
|
|
func (h *Handler) Close() error {
|
|
common.Close(h.mux)
|
|
return nil
|
|
}
|