Struct ArcChain 

pub struct ArcChain {
    pub sets: Vec<ArcSet>,
}

A complete ARC chain extracted from a message.

Fields

sets: Vec<ArcSet>

Sets in ascending instance order: sets[0].i == 1, etc.

Implementations

impl ArcChain

pub fn extract(raw_message: &[u8]) -> Result<Option<Self>, ArcError>

Walk the header block of raw_message and assemble every complete ARC instance into an ArcSet. The header block ends at the first CRLF CRLF (or LF LF) per RFC 5322 §2.1.

Returns Ok(None) if there are zero ARC headers (the message is unsigned by any forwarder — DMARC then evaluates as normal).

Returns Err(ArcError::IncompleteSet) if any instance has only 1 or 2 of the 3 required headers, and Err(ArcError::NonContiguousChain) if instances don’t form a contiguous run starting at 1.

pub fn highest_instance(&self) -> u32

Highest instance number in the chain.

Trait Implementations

impl Clone for ArcChain

fn clone(&self) -> ArcChain

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ArcChain

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

Formats the value using the given formatter.