Crate rift_nat 

NAT traversal helpers (STUN, hole punching, TURN integration).

This module provides:

• STUN binding discovery for public addresses
• UDP hole punching between peers
• TURN relay allocation helpers (via turn module)

Structs

NatConfig

PeerEndpoint

TurnCandidate

TurnRelay

TurnServerConfig

Enums

HolePunchError

NatType

StunError

TurnError

Functions

allocate_turn_relay

attempt_hole_punch

Attempt UDP hole punching with a peer and return the first successful socket.

detect_nat_type

Compare local and public address lists to detect NAT behavior.

gather_local_candidates

Collect local (host) candidates for a given listen port. Loopback, unspecified, and link-local addresses are excluded.

gather_public_addrs

Query STUN servers to discover public-facing addresses.

gather_turn_candidates

Allocate TURN relays and return candidates if successful.

parse_turn_server

Parse a TURN server URI into a config struct.

spawn_keepalive

Spawn periodic keep-alive packets to keep NAT bindings warm.

spawn_turn_keepalive

Periodically send empty datagrams to keep the TURN allocation alive.