Struct Envelope 

pub struct Envelope {
    pub payload: Option<Payload>,
}

LAND-PATCH B7-S6 P2: streaming channel envelope.

One frame on the bidirectional OpenChannelFromCocoon / OpenChannelFromMountain streams. The sender chooses which payload arm to populate based on what the frame represents:

• Notification: fire-and-forget; no response expected.
• Request: paired with a Response carrying the same correlation_id; receiver reads the request, dispatches, sends the response back over the same stream.
• Response: replies to a previously received Request. Carries the request’s correlation_id verbatim.
• Cancel: request the receiver to abort an in-flight request (best-effort; receiver chooses whether to honour).

Each side maintains a HashMap<u64, oneshot::Sender> of pending requests keyed by correlation_id; the multiplexer routes incoming Response frames into the matching sender.

Notifications fan out to a tokio::sync::broadcast channel so any number of subscribers (Effect-TS fibers, dev-log, telemetry, etc.) can observe the same flow concurrently.

Fields

payload: Option<Payload>

Trait Implementations

impl Clone for Envelope

fn clone(&self) -> Envelope

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Envelope

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

Formats the value using the given formatter.

impl Default for Envelope

fn default() -> Self

Returns the “default value” for a type.

impl Hash for Envelope

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 Message for Envelope

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for Envelope

fn eq(&self, other: &Envelope) -> 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 Eq for Envelope

impl StructuralPartialEq for Envelope