Struct HeaderPreferences 

pub struct HeaderPreferences {
    pub headers: HeaderMap<FieldPreferences>,
    pub pseudo_headers: BTreeMap<PseudoHeader, FieldPreferences>,
}

Available on crate features http and std only.

Optional request/response head-field preferences consumed by the HTTP/3 encoder.

Regular fields match by name and occurrence, preserving duplicate-field choices. Pseudo-fields use their protocol names. Missing preferences retain native policy. No header values or connection-specific table indexes are stored here. Trailers retain the encoder’s connection policy.

Fields

headers: HeaderMap<FieldPreferences>

pseudo_headers: BTreeMap<PseudoHeader, FieldPreferences>

Implementations

impl HeaderPreferences

pub fn requires_encoder_stream(&self) -> bool

Whether encoding is worth waiting for peer SETTINGS and the encoder stream: explicit insertions and positioned dynamic families cannot be honoured before them. Whatever still does not fit falls back to native encoding.

pub fn has_insertions(&self) -> bool

Whether any field requests an explicit encoder-stream insertion.

Trait Implementations

impl Clone for HeaderPreferences

fn clone(&self) -> HeaderPreferences

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HeaderPreferences

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

Formats the value using the given formatter.

impl Default for HeaderPreferences

fn default() -> HeaderPreferences

Returns the “default value” for a type.

impl Extension for HeaderPreferences

impl HttpExtension for HeaderPreferences