Interface Bind

conn/conn.go:34–58

A Bind listens on a port for both IPv6 and IPv4 UDP traffic. A Bind interface may also be a PeekLookAtSocketFd or BindSocketToInterface, depending on the platform-specific implementation.

// A Bind interface may also be a PeekLookAtSocketFd or BindSocketToInterface,
// depending on the platform-specific implementation.
type Bind interface {
	// Open puts the Bind into a listening state on a given port and reports the actual
	// port that it bound to. Passing zero results in a random selection.
	// fns is the set of functions that will be called to receive packets.
	Open(port uint16) (fns []ReceiveFunc, actualPort uint16, err error)

	// Close closes the Bind listener.
	// All fns returned by Open must return net.ErrClosed after a call to Close.
	Close() error

	// SetMark sets the mark for each packet sent through this Bind.
	// This mark is passed to the kernel as the socket option SO_MARK.
	SetMark(mark uint32) error

	// Send writes one or more packets in bufs to address ep. The length of
	// bufs must not exceed BatchSize().
	Send(bufs [][]byte, ep Endpoint) error

	// ParseEndpoint creates a new endpoint from a string.
	ParseEndpoint(s string) (Endpoint, error)

	// BatchSize is the number of buffers expected to be passed to
	// the ReceiveFuncs, and the maximum expected to be passed to SendBatch.
	BatchSize() int
}

// BindSocketToInterface is implemented by Bind objects that support being
// tied to a single network interface. Used by wireguard-windows.