github.com/v2fly/v2ray-core/v4@v4.45.2/features/routing/router.go (about)

     1  package routing
     2  
     3  import (
     4  	"github.com/v2fly/v2ray-core/v4/common"
     5  	"github.com/v2fly/v2ray-core/v4/features"
     6  )
     7  
     8  // Router is a feature to choose an outbound tag for the given request.
     9  //
    10  // v2ray:api:stable
    11  type Router interface {
    12  	features.Feature
    13  
    14  	// PickRoute returns a route decision based on the given routing context.
    15  	PickRoute(ctx Context) (Route, error)
    16  }
    17  
    18  // Route is the routing result of Router feature.
    19  //
    20  // v2ray:api:stable
    21  type Route interface {
    22  	// A Route is also a routing context.
    23  	Context
    24  
    25  	// GetOutboundGroupTags returns the detoured outbound group tags in sequence before a final outbound is chosen.
    26  	GetOutboundGroupTags() []string
    27  
    28  	// GetOutboundTag returns the tag of the outbound the connection was dispatched to.
    29  	GetOutboundTag() string
    30  }
    31  
    32  // RouterType return the type of Router interface. Can be used to implement common.HasType.
    33  //
    34  // v2ray:api:stable
    35  func RouterType() interface{} {
    36  	return (*Router)(nil)
    37  }
    38  
    39  // DefaultRouter is an implementation of Router, which always returns ErrNoClue for routing decisions.
    40  type DefaultRouter struct{}
    41  
    42  // Type implements common.HasType.
    43  func (DefaultRouter) Type() interface{} {
    44  	return RouterType()
    45  }
    46  
    47  // PickRoute implements Router.
    48  func (DefaultRouter) PickRoute(ctx Context) (Route, error) {
    49  	return nil, common.ErrNoClue
    50  }
    51  
    52  // Start implements common.Runnable.
    53  func (DefaultRouter) Start() error {
    54  	return nil
    55  }
    56  
    57  // Close implements common.Closable.
    58  func (DefaultRouter) Close() error {
    59  	return nil
    60  }