Struct MessageContract 

pub struct MessageContract {
    pub id: MessageId,
    pub scope: ContractScope,
    pub route: MessageRoute,
    pub codec: CodecSupport,
    pub payload_layout: PayloadLayout,
    pub fixed_payload_bytes: Option<usize>,
    pub payload_size_bounds: Option<PayloadSizeBounds>,
    pub emission: EmissionSupport,
    pub runtime_use: RuntimeUse,
    pub field_fidelity: FieldFidelity,
    pub response: ResponseExpectation,
    pub verification: ContractVerification,
}

Machine-readable support record for one known message identifier.

This is an implementation inventory, not a claim that every cataloged message is safe to send. OpaqueOnly entries exist for bounded forwarding and remain non-emittable through the typed API. response describes SCCP transaction acknowledgement; TCP acknowledgement is intentionally not treated as application-level acceptance.

Fields

id: MessageId

scope: ContractScope

route: MessageRoute

codec: CodecSupport

payload_layout: PayloadLayout

fixed_payload_bytes: Option<usize>

Canonical typed-encoder payload size when there is one stable, independently useful value. This excludes the 12-byte frame header; nominally empty decoders may still accept bounded extension bytes.

payload_size_bounds: Option<PayloadSizeBounds>

Accepted payload-size range when both bounds are known.

emission: EmissionSupport

Typed construction versus explicit opaque preservation.

runtime_use: RuntimeUse

Production/runtime use, distinct from mere encoder availability.

field_fidelity: FieldFidelity

Whether the typed model retains every accepted semantic wire field.

response: ResponseExpectation

SCCP response/acknowledgement family, when one exists.

verification: ContractVerification

Depth of contract validation performed by the codec.

Trait Implementations

impl Clone for MessageContract

fn clone(&self) -> MessageContract

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for MessageContract

impl Debug for MessageContract

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

Formats the value using the given formatter.

impl Eq for MessageContract

impl Hash for MessageContract

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 PartialEq for MessageContract

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for MessageContract