natpmp

Documentation

Overview

Package natpmp implements https://tools.ietf.org/html/rfc6886

Index

• func ExternalAddress() (net.IP, error)
• func MapTCP(port int, notifyChan chan interface{}) (int, error)
• func MapUDP(port int, notifyChan chan interface{}) (int, error)
• func UnmapTCP(port int) error
• func UnmapUDP(port int) error

Functions

func ExternalAddress

func ExternalAddress() (net.IP, error)

ExternalAddress returns the external address the internet sees you as having.

func MapTCP

func MapTCP(port int, notifyChan chan interface{}) (int, error)

MapTCP maps the specified TCP port for external access. It returns the port on the external address that can be used to connect to the internal port. If you wish to be notified of changes to the external port mapping, provide a notify channel. It will be sent an int containing the updated external port mapping when it changes or an error if a renewal fails. The channel will only be sent to if it is ready.

func MapUDP

func MapUDP(port int, notifyChan chan interface{}) (int, error)

MapUDP maps the specified UDP port for external access. It returns the port on the external address that can be used to connect to the internal port. If you wish to be notified of changes to the external port mapping, provide a notify channel. It will be sent an int containing the updated external port mapping when it changes or an error if a renewal fails. The channel will only be sent to if it is ready.

func UnmapTCP

func UnmapTCP(port int) error

UnmapTCP unmaps a previously mapped internal TCP port.

func UnmapUDP

func UnmapUDP(port int) error

UnmapUDP unmaps a previously mapped internal UDP port.