Crate rapace_core 

rapace-core: Core types and traits for the rapace RPC system.

This crate defines:

• Frame descriptors (MsgDescHot, MsgDescCold)
• Frame types (Frame, FrameView)
• Message header (MsgHeader)
• Transport traits (Transport, DynTransport)
• Encoding traits (EncodeCtx, DecodeCtx)
• Error codes and flags (ErrorCode, FrameFlags, Encoding)
• Control payloads (ControlPayload)
• Validation (validate_descriptor, DescriptorLimits)

Modules

control_method

Control method IDs.

Macros

try_stream

Asynchronous fallible stream

Structs

DescriptorLimits

Limits for descriptor validation.

Frame

Owned frame for sending or storage.

FrameFlags

Flags carried in each frame descriptor.

FrameView

Borrowed view of a frame for zero-copy receive.

MsgDescCold

Cold-path message descriptor (observability data).

MsgDescHot

Hot-path message descriptor (64 bytes, one cache line).

MsgHeader

Message header at the start of each payload.

ReceivedFrame

A frame that was received and routed.

RpcSession

RpcSession owns a transport and multiplexes frames between clients and servers.

TunnelChunk

A chunk received on a tunnel channel.

Enums

CancelReason

Reasons for cancelling a channel.

CloseReason

Reasons for closing a channel.

ControlPayload

Control channel payloads (channel 0).

DecodeError

Decoding errors.

EncodeError

Encoding errors.

Encoding

Body encoding format.

ErrorCode

RPC error codes.

RpcError

High-level RPC errors.

TransportError

Transport-level errors.

ValidationError

Descriptor validation errors.

Constants

INLINE_PAYLOAD_SIZE

Size of inline payload in bytes.

INLINE_PAYLOAD_SLOT

Sentinel value indicating payload is inline (not in a slot).

MSG_HEADER_SIZE

Size of MsgHeader in bytes.

MSG_HEADER_VERSION

Current message header version.

NO_DEADLINE

Sentinel value indicating no deadline.

Traits

DecodeCtx

Context for decoding frames into values.

DynTransport

Object-safe version of Transport for dynamic dispatch.

EncodeCtx

Context for encoding values into frames.

StreamExt

An extension trait for Streams that provides a variety of convenient combinator functions.

StreamSink

A sink for sending streaming items from server to client.

StreamSource

A source for receiving streaming items (used in client-streaming).

Streamable

Marker trait for types that can be streamed.

Transport

A transport moves frames between two peers.

Functions

parse_error_payload

Helper to parse an error from a response payload.

validate_descriptor

Validate a descriptor against the given limits.

Type Aliases

BoxFuture

Boxed future type for object-safe transport.

BoxedDispatcher

Type alias for a boxed async dispatch function.

Streaming

Type alias for streaming RPC results.