Enum LeafSource 

#[non_exhaustive]
pub enum LeafSource {
    WelcomeTree,
    CommitAdd,
    CommitUpdate,
    CommitPath,
    MessageSender,
    RosterEntry,
}

Which validation gate refused a leaf in MlsError::LeafAddressMismatch.

RFC 9420 §7.3 names two moments at which a client validates a ratchet tree — joining, and processing a Commit — and the SDK adds a third at use time (the sender’s own leaf, checked where the message is attributed). They fail for the same reason but mean different things operationally: a Welcome refusal is an invite that was never joined, a commit refusal is a member of a group you are already in forging identities, and a sender refusal on a leaf that passed the first two means local group state was written behind the SDK’s back.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

WelcomeTree

A leaf in the ratchet tree of a Welcome being joined.

CommitAdd

A leaf added by an Add proposal in a staged commit.

CommitUpdate

A leaf replaced by an Update proposal in a staged commit.

CommitPath

The committer’s own leaf, carried in the commit’s update path.

MessageSender

The leaf a decrypted message is attributed to.

RosterEntry

A leaf read back out of stored group state to build a roster.

Trait Implementations

impl Clone for LeafSource

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for LeafSource

impl Debug for LeafSource

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

Formats the value using the given formatter.

impl Display for LeafSource

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

Formats the value using the given formatter.

impl Eq for LeafSource

impl PartialEq for LeafSource

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for LeafSource