Struct Headers 

pub struct Headers { /* private fields */ }

Type-safe header collection keyed by TypeId. Thread-safe: all values implement Send + Sync (via HeaderValue bounds).

Implementations

impl Headers

pub fn new() -> Self

Create an empty header collection.

pub fn insert<H: HeaderValue>(&mut self, value: H)

Insert a typed header. Replaces any existing header of the same type.

pub fn get<H: HeaderValue + 'static>(&self) -> Option<&H>

Get a reference to a typed header, if present.

pub fn remove<H: HeaderValue + 'static>( &mut self, ) -> Option<Box<dyn HeaderValue>>

Remove a typed header, returning it if present.

pub fn insert_boxed(&mut self, value: Box<dyn HeaderValue>)

Insert a boxed header value. Used by wire deserialization to insert headers whose concrete type is resolved at runtime via a registry.

pub fn is_empty(&self) -> bool

Check if the headers collection is empty.

pub fn len(&self) -> usize

Number of headers.

pub fn to_wire(&self) -> WireHeaders

Convert typed headers to wire-format WireHeaders.

Iterates all headers and calls HeaderValue::to_bytes() on each. Headers that return None (local-only) are skipped.

Trait Implementations

impl Debug for Headers

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

Formats the value using the given formatter.

impl Default for Headers

fn default() -> Headers

Returns the “default value” for a type.