Struct Headers 

pub struct Headers { /* private fields */ }

An ordered, case-insensitive header list.

Implementations

impl Headers

pub fn new() -> Self

pub fn from_pairs(entries: Vec<(String, String)>) -> Self

Build from an ordered (name, value) list verbatim (duplicates and casing preserved) — the shape reqwest response headers arrive in.

pub fn get(&self, name: &str) -> Option<String>

WHATWG combined value: all same-name values joined with , (\n for set-cookie). None when the header is absent.

pub fn get_first(&self, name: &str) -> Option<&str>

The first value for name, uncombined (case-insensitive).

pub fn get_all(&self, name: &str) -> Vec<&str>

Every value stored under name, in insertion order.

pub fn get_set_cookie(&self) -> Vec<&str>

The Set-Cookie values, kept individually (WHATWG getSetCookie).

pub fn contains(&self, name: &str) -> bool

pub fn set(&mut self, name: &str, value: impl Into<String>)

Replace every value for name with a single value (WHATWG set). The first slot keeps its position; later duplicates drop.

pub fn set_if_absent(&mut self, name: &str, value: impl Into<String>)

Set name to value only if it is not already present.

pub fn append(&mut self, name: impl Into<String>, value: impl Into<String>)

Append a value under name without removing existing ones (WHATWG append).

pub fn append_combined(&mut self, name_lc: String, value: String)

WHATWG “append”, as the JS Headers class exposes it: set-cookie is never combined and stays a separate entry; every other repeat joins the existing value with , in place. name_lc must already be lowercased and value normalized.

pub fn get_joined(&self, name: &str) -> Option<String>

Combined value of name joined with , for EVERY header, set-cookie included — what the WHATWG Headers.get() returns. Self::get differs deliberately: it splits set-cookie with \n to match Playwright’s RawHeaders.

pub fn sorted_entries(&self) -> Vec<(String, String)>

The entries sorted by name — the order the WHATWG Headers iterators yield. The sort is stable, so repeated set-cookie entries keep insertion order.

pub fn remove(&mut self, name: &str)

Remove every value stored under name.

pub fn iter(&self) -> impl Iterator<Item = &(String, String)>

Iterate the (name, value) entries in insertion order.

pub fn entries(&self) -> &[(String, String)]

pub fn into_pairs(self) -> Vec<(String, String)>

pub fn to_object(&self) -> Vec<(String, String)>

Flattened header object: lowercased names, each mapped to its combined value, ordered by first appearance. Playwright’s RawHeaders.headers() (client/network.ts:959), which backs apiResponse.headers().

pub fn is_empty(&self) -> bool

Trait Implementations

impl Clone for Headers

fn clone(&self) -> Headers

Returns a duplicate of the value.

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

Performs copy-assignment from source.

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.

impl From<Vec<(String, String)>> for Headers

fn from(entries: Vec<(String, String)>) -> Self

Converts to this type from the input type.