hapi-vary-accept

hapi pre-response handler to include Accept in the Vary header

Table of Contents

• Motivation
• Usage
  • Installation
• Contribution
  • Verification

Motivation

Google Chrome caches only the last response for any endpoint, regardless of content-type, which results in rendering json data instead of the rendered page based on the html representation. These values are cached even with the Cache-Control header set to no-cache in order to optimize operations like navigating back or duplicating a tab.

While normally unnecessary because of configuring the headers to prevent caching,including Accept in the Vary header does technically further inform a client that a single endpoint responds with different responses based on the Accept header of the request.

• https://bugs.chromium.org/p/chromium/issues/detail?id=94369
• https://bugs.chromium.org/p/chromium/issues/detail?id=108425
• https://stackoverflow.com/questions/1975416/what-is-the-function-of-the-vary-accept-http-header

Usage

Installation

⚠️ This plugin does not yet support hapi v17

$ npm install hapi-vary-accept --save

Contribution

Verification

$ npm test