Module protocol 

Schema-driven ServerProtocol implementations and protocol registration.

ProtocolRegistry::BUILTIN documents the built-in claim priority order, how custom protocols fit into it, and its effect on ambiguous requests.

Each protocol frames modeled errors with its discriminator:

Protocol	Discriminator
restJson1	x-amzn-errortype header, shape name only; none in body
awsJson1.0	__type body member, full namespace#Name, written last
awsJson1.1	__type body member, shape name only, written last
rpcv2Cbor	__type body member, full namespace#Name, written first
restXml	none

@httpHeader-bound error members are split out of the body on the REST protocols.

Structs

AwsJson1_0

Stateful schema-driven AWS JSON 1.0 protocol implementation. Defaults to skipping escape validation in discarded strings. Set customizationConfig.protocols for this protocol to {"validateSkippedValues":true} to validate escape syntax without decoding Unicode escapes. UTF-8, unescaped control characters, and structural syntax remain checked in either mode.

AwsJson1_1

Stateful schema-driven AWS JSON 1.1 protocol implementation. Defaults to skipping escape validation in discarded strings. Set customizationConfig.protocols for this protocol to {"validateSkippedValues":true} to validate escape syntax without decoding Unicode escapes. UTF-8, unescaped control characters, and structural syntax remain checked in either mode.

EventStreamFraming

The event-frame capability of a metadata-routed protocol, as plain data.

ProtocolBuildContext

Everything a protocol factory sees.

ProtocolRegistration

A single protocol’s entry in a ProtocolRegistry.

ProtocolRegistry

A const collection of ProtocolRegistrations.

RestJson1

Stateful schema-driven restJson1 protocol implementation. Defaults to skipping escape validation in discarded strings. Set customizationConfig.protocols for this protocol to {"validateSkippedValues":true} to validate escape syntax without decoding Unicode escapes. UTF-8, unescaped control characters, and structural syntax remain checked in either mode.

RestXml

Stateful schema-driven restXml protocol implementation.

RpcV2Cbor

Stateful schema-driven Smithy RPC v2 CBOR protocol implementation.

SharedServerProtocol

Shared, erased server protocol selected by routing.

Enums

BodyDirective

Whether request deserialization needs the body to be collected.

ProtocolOrder

Places a protocol relative to another protocol, by shape ID, in a multi-protocol service’s claim order. Constraints resolve transitively over every registered protocol, so a constraint against a protocol the service does not serve still orders the ones it does.

RequestBodyCollectionError

Traits

BodyRoutedProtocol

A ServerProtocol that reads the request body to select operations.

MetadataRoutedProtocol

A ServerProtocol that selects operations from request metadata alone.

ServerProtocol

Schema-driven serialization for one protocol, keyed on struct schemas.

Functions

collect_request_body

Type Aliases

ProtocolFactory

Builds a protocol from its registered configuration into the erased handle carrying its routing kind. Produced by ProtocolRegistration::metadata_routed and ProtocolRegistration::body_routed, never written by hand.