Struct http_auth::PasswordClientBuilder

pub struct PasswordClientBuilder(_);

Builds a PasswordClient from the supplied challenges; create via PasswordClient::builder.

Often you can just use PasswordClient’s TryFrom implementations to convert from a parsed challenge (crate::ChallengeRef) or unparsed challenges (str, http::header::HeaderValue, or http::header::GetAll).

The builder allows more flexibility. For example, if you are using a HTTP library which is not based on a http crate, you might need to create a PasswordClient from an iterator over multiple WWW-Authenticate headers. You can feed each to PasswordClientBuilder::challenges.

Prefers Digest over Basic, consistent with the RFC 7235 section 2.1 advice for a user-agent to pick the most secure auth-scheme it understands.

When there are multiple Digest challenges, currently uses the first, consistent with the RFC 7616 section 3.7 advice to “use the first challenge it supports, unless a local policy dictates otherwise”. In the future, it may prioritize by algorithm.

Ignores parse errors as long as there’s at least one parseable, supported challenge.

Example

use http_auth::PasswordClient;
let client = PasswordClient::builder()
    .challenges("UnsupportedSchemeA, Basic realm=\"foo\", UnsupportedSchemeB")
    .challenges("Digest \
                 realm=\"http-auth@example.org\", \
                 qop=\"auth, auth-int\", \
                 algorithm=MD5, \
                 nonce=\"7ypf/xlj9XXwfDPEoM4URrv/xwf94BcCAzFZH4GiTo0v\", \
                 opaque=\"FQhe/qaU925kfnzjCev0ciny7QMkPqMAFRtzCUYo5tdS\"")
    .build()
    .unwrap();
assert!(matches!(client, PasswordClient::Digest(_)));

Implementations

impl PasswordClientBuilder

pub fn header_value(self, value: &HeaderValue) -> Self

This is supported on crate feature http only.

Considers all challenges from the given http::HeaderValue challenge list.

pub fn challenges(self, value: &str) -> Self

Considers all challenges from the given &str challenge list.

pub fn challenge(self, challenge: &ChallengeRef<'_>) -> Self

Considers a single challenge.

pub fn build(self) -> Result<PasswordClient, String>

Returns a new PasswordClient or fails.

Trait Implementations

impl Default for PasswordClientBuilder

fn default() -> PasswordClientBuilder

Returns the “default value” for a type.