v2ray-core/app/dispatcher/impl/default.go

82 lines
2.1 KiB
Go

package impl
import (
"context"
"v2ray.com/core/app"
"v2ray.com/core/app/dispatcher"
"v2ray.com/core/app/log"
"v2ray.com/core/app/proxyman"
"v2ray.com/core/app/router"
"v2ray.com/core/common"
"v2ray.com/core/common/errors"
"v2ray.com/core/common/net"
"v2ray.com/core/proxy"
"v2ray.com/core/transport/ray"
)
type DefaultDispatcher struct {
ohm proxyman.OutboundHandlerManager
router *router.Router
}
func NewDefaultDispatcher(ctx context.Context, config *dispatcher.Config) (*DefaultDispatcher, error) {
space := app.SpaceFromContext(ctx)
if space == nil {
return nil, errors.New("DefaultDispatcher: No space in context.")
}
d := &DefaultDispatcher{}
space.OnInitialize(func() error {
d.ohm = proxyman.OutboundHandlerManagerFromSpace(space)
if d.ohm == nil {
return errors.New("DefaultDispatcher: OutboundHandlerManager is not found in the space.")
}
d.router = router.FromSpace(space)
return nil
})
return d, nil
}
func (DefaultDispatcher) Start() error {
return nil
}
func (DefaultDispatcher) Close() {}
func (DefaultDispatcher) Interface() interface{} {
return (*dispatcher.Interface)(nil)
}
func (v *DefaultDispatcher) Dispatch(ctx context.Context, destination net.Destination) (ray.InboundRay, error) {
dispatcher := v.ohm.GetDefaultHandler()
if !destination.IsValid() {
panic("Dispatcher: Invalid destination.")
}
ctx = proxy.ContextWithTarget(ctx, destination)
if v.router != nil {
if tag, err := v.router.TakeDetour(ctx); 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(ctx)
go dispatcher.Dispatch(ctx, direct)
return direct, nil
}
func init() {
common.Must(common.RegisterConfig((*dispatcher.Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
return NewDefaultDispatcher(ctx, config.(*dispatcher.Config))
}))
}