506 Variant Also Negotiates

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The HyperText Transfer Protocol (HTTP) 506 Variant Also Negotiates response status code may be given in the context of Transparent Content Negotiation (see RFC 2295). This protocol enables a client to retrieve the best variant of a given resource, where the server supports multiple variants.

The Variant Also Negotiates status code indicates an internal server configuration error in which the chosen variant is itself configured to engage in content negotiation, so is not a proper negotiation endpoint.

Status

506 Variant Also Negotiates

Specifications

Specification Title
RFC 2295, section 8.1: 506 Variant Also Negotiates Transparent Content Negotiation in HTTP