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WellKnownToken

Enum WellKnownToken 

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#[repr(u32)]
pub enum WellKnownToken { EndpointNotFound = 0, Ping = 1, UnauthorizedEndpoint = 2, FirstAvailable = 3, }
Expand description

Well-known endpoint tokens.

These tokens are used for system services that need deterministic addressing without service discovery. Clients can construct endpoints directly using these well-known tokens.

§FDB Reference

From FlowTransport.h:

enum { WLTOKEN_ENDPOINT_NOT_FOUND = 0, WLTOKEN_PING_PACKET,
       WLTOKEN_UNAUTHORIZED_ENDPOINT, WLTOKEN_FIRST_AVAILABLE };

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EndpointNotFound = 0

Response sent when an endpoint is not found. Used to notify senders that their target doesn’t exist.

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Ping = 1

Ping for connection health checks. Used by the connection monitor to detect failures.

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UnauthorizedEndpoint = 2

Unauthorized endpoint access response. Sent when a client tries to access a protected endpoint.

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FirstAvailable = 3

First available token for user services. User-defined well-known services should use this value or higher.

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impl WellKnownToken

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pub const fn as_u32(self) -> u32

Convert to u32 for UID creation.

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pub const fn uid(self) -> UID

Create a UID for this well-known token.

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impl Clone for WellKnownToken

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fn clone(&self) -> WellKnownToken

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Copy for WellKnownToken

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impl Debug for WellKnownToken

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

Formats the value using the given formatter. Read more
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impl Eq for WellKnownToken

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impl Hash for WellKnownToken

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for WellKnownToken

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

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

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

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more