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84 lines
2.3 KiB
84 lines
2.3 KiB
package impl
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import (
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"v2ray.com/core/app"
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"v2ray.com/core/app/proxyman"
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"v2ray.com/core/app/router"
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"v2ray.com/core/common/alloc"
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"v2ray.com/core/common/log"
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v2net "v2ray.com/core/common/net"
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"v2ray.com/core/proxy"
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"v2ray.com/core/transport/ray"
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)
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type DefaultDispatcher struct {
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ohm proxyman.OutboundHandlerManager
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router *router.Router
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}
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func NewDefaultDispatcher(space app.Space) *DefaultDispatcher {
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d := &DefaultDispatcher{}
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space.InitializeApplication(func() error {
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return d.Initialize(space)
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})
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return d
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}
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// Private: Used by app.Space only.
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func (this *DefaultDispatcher) Initialize(space app.Space) error {
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if !space.HasApp(proxyman.APP_ID_OUTBOUND_MANAGER) {
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log.Error("DefaultDispatcher: OutboundHandlerManager is not found in the space.")
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return app.ErrMissingApplication
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}
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this.ohm = space.GetApp(proxyman.APP_ID_OUTBOUND_MANAGER).(proxyman.OutboundHandlerManager)
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if space.HasApp(router.APP_ID) {
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this.router = space.GetApp(router.APP_ID).(*router.Router)
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}
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return nil
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}
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func (this *DefaultDispatcher) Release() {
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}
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func (this *DefaultDispatcher) DispatchToOutbound(meta *proxy.InboundHandlerMeta, session *proxy.SessionInfo) ray.InboundRay {
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direct := ray.NewRay()
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dispatcher := this.ohm.GetDefaultHandler()
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destination := session.Destination
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if this.router != nil {
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if tag, err := this.router.TakeDetour(session); err == nil {
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if handler := this.ohm.GetHandler(tag); handler != nil {
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log.Info("DefaultDispatcher: Taking detour [", tag, "] for [", destination, "].")
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dispatcher = handler
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} else {
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log.Warning("DefaultDispatcher: Nonexisting tag: ", tag)
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}
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} else {
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log.Info("DefaultDispatcher: Default route for ", destination)
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}
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}
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if meta.AllowPassiveConnection {
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go dispatcher.Dispatch(destination, alloc.NewLocalBuffer(32).Clear(), direct)
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} else {
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go this.FilterPacketAndDispatch(destination, direct, dispatcher)
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}
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return direct
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}
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// Private: Visible for testing.
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func (this *DefaultDispatcher) FilterPacketAndDispatch(destination v2net.Destination, link ray.OutboundRay, dispatcher proxy.OutboundHandler) {
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payload, err := link.OutboundInput().Read()
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if err != nil {
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log.Info("DefaultDispatcher: No payload towards ", destination, ", stopping now.")
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link.OutboundInput().Release()
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link.OutboundOutput().Release()
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return
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}
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dispatcher.Dispatch(destination, payload, link)
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}
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