8.9 Retrieve Capabilities Transaction

8.9 Retrieve Capabilities Transaction (Current)
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This transaction retrieves a Capabilities Description (see Annex H), which is a machine-readable description of the service(s) implemented by an origin server. All RESTful services defined by this Part of the Standard shall implement this transaction.

The Target Resource for this transaction is an origin server. The response contains a Capabilities Description, which describes the transactions, resources, representations, etc. that are supported by the service(s).

8.9.1 Request

The request shall have the following syntax:

OPTIONS SP / SP version CRLF

Accept: 1#media-type CRLF

*(header-field CRLF)

CRLF

8.9.1.1 Resource

The Target Resource for this transaction is the Base URI ("/") for the Service. See Section 8.2.

8.9.1.2 Query Parameters

This transaction has no Query Parameters.

8.9.1.3 Request Header Fields

Table 8.9.1-1. Request Header Fields

Name	Value	Usage		Description
Name	Value	User Agent	Origin Server	Description
Accept	media-type	M	M	The Acceptable Media Types for the response payload
Accept-Charset	charset	O	O	The Acceptable Character Sets of the response payload

8.9.1.4 Request Payload

The request has no payload.

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8.8.5 Selected Character Set	Home	8.9.2 Behavior