Enum PortMapping 

pub enum PortMapping {
    Off,
    Auto,
    Always,
}

Whether a tunnel asks this network’s router (PCP, NAT-PMP or UPnP) to map its direct endpoint’s UDP port, so that a peer’s first packet gets in where the NAT drops what it has not seen. A mapping never holds up a session, is renewed while the tunnel runs and released when it stops, and is ignored while the tunnel keeps to the relay; TunnelDiagnostics::port_mapping says where it stands.

Variants

Off

Never ask the router.

Auto

The default: ask only once a direct attempt of this tunnel has failed to punch through, a sign that a NAT drops unsolicited packets; later sessions then offer the mapped address. Where punching works, the router is never asked. In a build without the port-mapping feature there is nothing to ask with, and this is Off.

Always

Ask as soon as the tunnel’s direct endpoint opens. Needs the port-mapping feature: a build without it refuses the tunnel.

Implementations

impl PortMapping

pub fn as_str(self) -> &'static str

Stable label, matching the serialized representation.

Trait Implementations

impl Clone for PortMapping

fn clone(&self) -> PortMapping

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for PortMapping

impl Debug for PortMapping

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for PortMapping

fn default() -> PortMapping

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for PortMapping

fn deserialize<__D>( __deserializer: __D, ) -> Result<PortMapping, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for PortMapping

impl PartialEq for PortMapping

fn eq(&self, other: &PortMapping) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for PortMapping

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for PortMapping