addrutil

Documentation

Index

• func DefaultLocalIP(ctx context.Context, sdConn sciond.Connector) (net.IP, error)
• func ResolveLocal(dst net.IP) (net.IP, error)
• type Pather
  • func (p Pather) GetPath(svc addr.HostSVC, ps *seg.PathSegment) (*snet.SVCAddr, error)

Functions

func DefaultLocalIP

func DefaultLocalIP(ctx context.Context, sdConn sciond.Connector) (net.IP, error)

DefaultLocalIP returns _an_ IP of this host in the local AS.

This returns a sensible but arbitrary local IP. In the general case the local IP would depend on the next hop of selected path. This approach will not work in more complicated setups where e.g. different network interfaces are used to talk to different AS interfaces.

This is a simple workaround for not being able to use wildcard addresses with snet. Once available, a wildcard address should be used instead and this should be removed.

func ResolveLocal

func ResolveLocal(dst net.IP) (net.IP, error)

ResolveLocal returns the local IP address used for traffic destined to dst.

Types

type Pather

type Pather struct {
	// UnderlayNextHop determines the next hop underlay address for the
	// specified interface id.
	UnderlayNextHop func(ifID uint16) (*net.UDPAddr, bool)
}

Pather computes the remote address with a path based on the provided segment.

func (Pather) GetPath

func (p Pather) GetPath(svc addr.HostSVC, ps *seg.PathSegment) (*snet.SVCAddr, error)

GetPath computes the remote address with a path based on the provided segment.