Struct Frontend 

pub struct Frontend {

    pub cluster_id: Option<ClusterId>,
    pub redirect: RedirectPolicy,
    pub redirect_scheme: RedirectScheme,
    pub redirect_template: Option<String>,
    pub capture_cap_host: usize,
    pub capture_cap_path: usize,
    pub rewrite_host: Option<RewriteParts>,
    pub rewrite_path: Option<RewriteParts>,
    pub rewrite_port: Option<u16>,
    pub headers_request: Rc<[HeaderEdit]>,
    pub headers_response: Rc<[HeaderEdit]>,
    pub required_auth: bool,
    pub tags: Option<Rc<CachedTags>>,
    pub inherits_listener_hsts: bool,
}

What to do with the traffic for a routed frontend.

Built once at frontend registration time. The expensive work (parsing rewrite templates, resolving headers into HeaderEdits) happens here so Router::lookup can run cheaply on the hot path.

A clusterless frontend with redirect == FORWARD is coerced to UNAUTHORIZED in Frontend::new to avoid a forward loop with no backend; the explicit UNAUTHORIZED policy then renders a 401.

Tags are wrapped in Rc<CachedTags> so the same frontend can be referenced from multiple routing slots (pre/tree/post) without copying.

Fields

cluster_id: Option<ClusterId>

redirect: RedirectPolicy

redirect_scheme: RedirectScheme

redirect_template: Option<String>

capture_cap_host: usize

Number of host captures the router will collect for this frontend. Sized from the matching DomainRule; the router skips capture extraction entirely when this is 0 (no rewrite references $HOST[…]).

capture_cap_path: usize

Number of path captures the router will collect for this frontend. Sized from the matching PathRule; the router skips capture extraction entirely when this is 0 (no rewrite references $PATH[…]).

rewrite_host: Option<RewriteParts>

rewrite_path: Option<RewriteParts>

rewrite_port: Option<u16>

headers_request: Rc<[HeaderEdit]>

headers_response: Rc<[HeaderEdit]>

required_auth: bool

tags: Option<Rc<CachedTags>>

inherits_listener_hsts: bool

true when the materialised HSTS edit (if any) in Self::headers_response came from the listener-default HttpsListenerConfig.hsts rather than the per-frontend RequestHttpFrontend.hsts block. Consulted by Router::refresh_inheriting_hsts so a UpdateHttpsListenerConfig.hsts patch reflows the new default onto inheriting frontends without overwriting explicit per-frontend HSTS overrides.

Implementations

impl Frontend

pub fn new( domain_rule: &DomainRule, path_rule: &PathRule, front: &HttpFrontend, redirect: RedirectPolicy, redirect_scheme: RedirectScheme, redirect_template: Option<String>, rewrite_host: Option<String>, rewrite_path: Option<String>, rewrite_port: Option<u16>, headers: &[Header], required_auth: bool, hsts_origin: HstsOrigin, ) -> Result<Self, RouterError>

Build a Frontend from a domain/path rule pair and an HttpFrontend configuration.

The richer proto-level fields (redirect, redirect_scheme, redirect_template, rewrite_*, headers, required_auth) are not yet carried on HttpFrontend; until they are, this constructor takes them as explicit arguments so the data flow is testable today and the call sites in add_http_front only need a one-line update once the fields are plumbed through.

Coercions:

• redirect == UNAUTHORIZED zeroes out rewrite/headers/auth — the request will be rejected with a 401 regardless.
• redirect == FORWARD on a clusterless frontend (cluster_id == None) is coerced to UNAUTHORIZED (logged as a warning) to avoid a forward loop with no backend.

Returns RouterError::InvalidHostRewrite / RouterError::InvalidPathRewrite when a rewrite template fails to parse against the rule’s capture caps.

Trait Implementations

impl Clone for Frontend

fn clone(&self) -> Frontend

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Frontend

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

Formats the value using the given formatter.

impl Eq for Frontend

impl Hash for Frontend

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Frontend

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Frontend

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Frontend

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.