mirror of https://github.com/v2ray/v2ray-core
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
140 lines
3.3 KiB
140 lines
3.3 KiB
package impl
|
|
|
|
import (
|
|
"time"
|
|
|
|
"v2ray.com/core/app"
|
|
"v2ray.com/core/app/dispatcher"
|
|
"v2ray.com/core/app/proxyman"
|
|
"v2ray.com/core/app/router"
|
|
"v2ray.com/core/common/buf"
|
|
"v2ray.com/core/common/errors"
|
|
"v2ray.com/core/common/log"
|
|
v2net "v2ray.com/core/common/net"
|
|
"v2ray.com/core/common/serial"
|
|
"v2ray.com/core/proxy"
|
|
"v2ray.com/core/transport/ray"
|
|
)
|
|
|
|
type DefaultDispatcher struct {
|
|
ohm proxyman.OutboundHandlerManager
|
|
router *router.Router
|
|
}
|
|
|
|
func NewDefaultDispatcher(space app.Space) *DefaultDispatcher {
|
|
d := &DefaultDispatcher{}
|
|
space.InitializeApplication(func() error {
|
|
return d.Initialize(space)
|
|
})
|
|
return d
|
|
}
|
|
|
|
// Initialize initializes the dispatcher.
|
|
// Private: Used by app.Space only.
|
|
func (v *DefaultDispatcher) Initialize(space app.Space) error {
|
|
if !space.HasApp(proxyman.APP_ID_OUTBOUND_MANAGER) {
|
|
return errors.New("DefaultDispatcher: OutboundHandlerManager is not found in the space.")
|
|
}
|
|
v.ohm = space.GetApp(proxyman.APP_ID_OUTBOUND_MANAGER).(proxyman.OutboundHandlerManager)
|
|
|
|
if space.HasApp(router.APP_ID) {
|
|
v.router = space.GetApp(router.APP_ID).(*router.Router)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (v *DefaultDispatcher) DispatchToOutbound(session *proxy.SessionInfo) ray.InboundRay {
|
|
dispatcher := v.ohm.GetDefaultHandler()
|
|
destination := session.Destination
|
|
|
|
if v.router != nil {
|
|
if tag, err := v.router.TakeDetour(session); err == nil {
|
|
if handler := v.ohm.GetHandler(tag); handler != nil {
|
|
log.Info("DefaultDispatcher: Taking detour [", tag, "] for [", destination, "].")
|
|
dispatcher = handler
|
|
} else {
|
|
log.Warning("DefaultDispatcher: Nonexisting tag: ", tag)
|
|
}
|
|
} else {
|
|
log.Info("DefaultDispatcher: Default route for ", destination)
|
|
}
|
|
}
|
|
|
|
direct := ray.NewRay()
|
|
var waitFunc func() error
|
|
if session.Inbound != nil && session.Inbound.AllowPassiveConnection {
|
|
waitFunc = noOpWait()
|
|
} else {
|
|
wdi := &waitDataInspector{
|
|
hasData: make(chan bool, 1),
|
|
}
|
|
direct.AddInspector(wdi)
|
|
waitFunc = waitForData(wdi)
|
|
}
|
|
|
|
go v.waitAndDispatch(waitFunc, destination, direct, dispatcher)
|
|
|
|
return direct
|
|
}
|
|
|
|
func (v *DefaultDispatcher) waitAndDispatch(wait func() error, destination v2net.Destination, link ray.OutboundRay, dispatcher proxy.OutboundHandler) {
|
|
if err := wait(); err != nil {
|
|
log.Info("DefaultDispatcher: Failed precondition: ", err)
|
|
link.OutboundInput().ForceClose()
|
|
link.OutboundOutput().Close()
|
|
return
|
|
}
|
|
|
|
dispatcher.Dispatch(destination, link)
|
|
}
|
|
|
|
type DefaultDispatcherFactory struct{}
|
|
|
|
func (v DefaultDispatcherFactory) Create(space app.Space, config interface{}) (app.Application, error) {
|
|
return NewDefaultDispatcher(space), nil
|
|
}
|
|
|
|
func (v DefaultDispatcherFactory) AppId() app.ID {
|
|
return dispatcher.APP_ID
|
|
}
|
|
|
|
func init() {
|
|
app.RegisterApplicationFactory(serial.GetMessageType(new(dispatcher.Config)), DefaultDispatcherFactory{})
|
|
}
|
|
|
|
type waitDataInspector struct {
|
|
hasData chan bool
|
|
}
|
|
|
|
func (wdi *waitDataInspector) Input(*buf.Buffer) {
|
|
select {
|
|
case wdi.hasData <- true:
|
|
default:
|
|
}
|
|
}
|
|
|
|
func (wdi *waitDataInspector) WaitForData() bool {
|
|
select {
|
|
case <-wdi.hasData:
|
|
return true
|
|
case <-time.After(time.Minute):
|
|
return false
|
|
}
|
|
}
|
|
|
|
func waitForData(wdi *waitDataInspector) func() error {
|
|
return func() error {
|
|
if wdi.WaitForData() {
|
|
return nil
|
|
}
|
|
return errors.New("DefaultDispatcher: No data.")
|
|
}
|
|
}
|
|
|
|
func noOpWait() func() error {
|
|
return func() error {
|
|
return nil
|
|
}
|
|
}
|