AsyncAPI channel · Amazon API Gateway · Amazon API Gateway WebSocket API Protocol

$default

Platform-reserved fallback route. Invoked when the inbound payload is not valid JSON, when `routeSelectionExpression` cannot be evaluated against the payload, or when no customer-defined route key matches the extracted value.

Provider: Amazon API Gateway AsyncAPI: v2.6.0 Spec: Amazon API Gateway WebSocket API Protocol Operations: 1 Messages: 1

Channel address

$default

Operations

onDefault
API Gateway delivers an unrouted inbound message to the `$default` integration.

Messages

DefaultMessage
Inbound message that did not match any custom route key, or that could not be parsed as JSON for route selection.
Content-Type:

About AsyncAPI

The AsyncAPI specification describes event-driven APIs the way OpenAPI describes request/response APIs. A channel is the named pipe — a webhook URL, a Kafka topic, a WebSocket route, an MQTT subject — that producers and consumers publish or subscribe to. Each channel carries one or more messages with structured payloads, and an operation declares whether a given party sends or receives on that channel.

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