Struct FourTuple 

pub struct FourTuple {
    pub remote: SocketAddr,
    pub local_ip: Option<IpAddr>,
}

Identifies a network path by the combination of remote and local addresses

Including the local ensures good behavior when the host has multiple IP addresses on the same subnet and zero-length connection IDs are in use or when multipath is enabled and multiple paths exist with the same remote, but different local IP interfaces.

Fields

remote: SocketAddr

The remote side of this tuple

local_ip: Option<IpAddr>

The local side of this tuple.

The socket is irrelevant for our intents and purposes: When we send, we can only specify the src_ip, not the source port. So even if we track the port, we won’t be able to make use of it.

Implementations

impl FourTuple

pub fn is_probably_same_path(&self, other: &Self) -> bool

Returns whether we think the other address probably represents the same path as ours.

If we have a local IP set, then we’re exact and only match if the 4-tuples are exactly equal. If we don’t have a local IP set, then we only check the remote addresses for equality.

pub fn update_local_if_same_remote(&mut self, other: &Self) -> bool

Updates this tuple’s local address iff

• it was unset before,
• the other tuple has the same remote, and
• the other tuple has a local address set.

Returns whether this and the other remote are now fully equal.

Trait Implementations

impl Clone for FourTuple

fn clone(&self) -> FourTuple

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FourTuple

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

Formats the value using the given formatter.

impl Display for FourTuple

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

Formats the value using the given formatter.

impl Hash for FourTuple

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for FourTuple

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for FourTuple

impl Eq for FourTuple

impl StructuralPartialEq for FourTuple