Struct DaemonIdentity 

pub struct DaemonIdentity { /* private fields */ }

A client’s typed view of the daemon it is connected to.

The pre-capability value — DaemonIdentity::pre_capability — is not an error state and is not a fallback bolted on the side. It is what every client gets today, because the daemon running on this machine predates the probe. Treat it as the normal case.

Implementations

impl DaemonIdentity

pub fn pre_capability() -> Self

A daemon that could not answer Request::Hello: it predates the probe (or refused it). Protocol 0 — no capabilities.

pub fn from_hello(hello: DaemonHello) -> Self

Build from a daemon’s hello reply.

pub fn local(version: &str) -> Self

The identity an in-process backend has: it is this build, so it implements exactly what this build advertises.

pub fn version(&self) -> Option<&str>

The daemon’s own version, or None when it predates the probe. Never fall back to the client’s version here — that substitution is precisely the lie tear status used to tell.

pub fn is_pre_capability(&self) -> bool

True when the daemon could not answer the probe at all.

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

Wire names, sorted. Includes names this build cannot type.

pub fn has(&self, cap: Capability) -> bool

Does the daemon implement cap?

pub fn require(&self, cap: Capability, detail: &str) -> ControlResult<()>

Typed refusal for a call that needs cap.

Call this only on the branch that actually requires the capability — a caller who passes no args must not be refused by a daemon that cannot read args. That call-site-scoped shape is the whole point: the refusal is about one field, not a global “you are old” banner.

Errors

ControlError::Unsupported naming the capability, the daemon’s version (or that it predates the probe), and what to do about it.

Trait Implementations

impl Clone for DaemonIdentity

fn clone(&self) -> DaemonIdentity

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DaemonIdentity

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

Formats the value using the given formatter.

impl Default for DaemonIdentity

fn default() -> DaemonIdentity

Returns the “default value” for a type.

impl Eq for DaemonIdentity

impl PartialEq for DaemonIdentity

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DaemonIdentity