natmap

package

v0.1.7 Latest Latest Go to latest Published: Apr 23, 2026 License: MPL-2.0 Imports: 6 Imported by: 0

Details

Valid go.mod file
Redistributable license
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Stable version
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Repository

github.com/a2al/a2al

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Documentation ¶

Overview ¶

Package natmap provides optional NAT helpers (Phase 2b: UPnP IGD port mapping). TURN and other relays are out of scope until Phase 3+.

Index ¶

func LocalIPv4ForUPnP() string
func MapUDPPort(ctx context.Context, internalPort int, internalClient string) (externalIP string, externalPort int, cleanup func(), err error)
func QUICURL(host string, port int) string

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func LocalIPv4ForUPnP ¶

func LocalIPv4ForUPnP() string

LocalIPv4ForUPnP returns an IPv4 address suitable as IGD "internal client" (typically the LAN address used for outbound UDP).

func MapUDPPort ¶

func MapUDPPort(ctx context.Context, internalPort int, internalClient string) (externalIP string, externalPort int, cleanup func(), err error)

MapUDPPort asks the LAN IGD to forward UDP externalPort -> internalClient:internalPort using the same port number on the WAN side (required for predictable QUIC URLs). Returns cleanup (DeletePortMapping). Errors if no gateway or mapping is rejected.

func QUICURL ¶

func QUICURL(host string, port int) string

QUICURL builds a quic:// URL for an endpoint string (host + port).

Types ¶

This section is empty.

Source Files ¶

View all Source files

upnp.go

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