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Response

WWW-Authenticate

Defines the authentication method the server requires to access a protected resource.

Syntax

WWW-Authenticate: <scheme> realm="<realm>"

Example

WWW-Authenticate: Bearer realm="api.enterno.io", error="invalid_token"

Description

The WWW-Authenticate response header is sent alongside a 401 Unauthorized status. It defines the authentication scheme(s) that can be used to gain access, such as Basic, Digest, or Bearer.

The client then includes matching credentials in subsequent requests using the Authorization header.

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Related Headers

Connection
Controls whether the network connection stays open after the current transaction finishes.
Content-Disposition
Indicates whether the response should be displayed inline or downloaded as a file attachment.
Content-Encoding
Specifies the compression algorithm applied to the response body, such as gzip or brotli.
Content-Length
Specifies the size of the response body in bytes.
Content-Type
Indicates the media type of the response body, telling the browser how to interpret and display the content.
Date
Indicates the date and time at which the response was generated by the server.

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