{"json_modified": "2016-07-26T07:43:30.458094", "uuid": "305ead41-ee72-4539-9bfe-9e6d3359b96a", "title": "Entity header", "url": "/en-US/docs/Glossary/Entity_header", "tags": ["glossary", "WebMechanics", "Glossary"], "translations": [], "modified": "2016-07-26T07:43:30", "label": "Entity header", "localization_tags": [], "locale": "en-US", "id": 188885, "last_edit": "2016-07-19T04:35:11", "summary": "An entity header is an <a class=\"glossaryLink\" href=\"/en-US/docs/Glossary/header\" title=\"HTTP header: An HTTP header is a field of an HTTP request or response that passes additional information, altering or precising the semantics of the message or of the body. Headers are case-insensitive, begins at the start of a line and are immediately followed by a ':' and a value depending of the header itself. The value finish at the next CR or at the end of the message.\">HTTP header</a> describing the content of the body of the message. Entity headers are used in both, HTTP requests and responses. Headers like <a href=\"/en-US/docs/Web/HTTP/Headers/Content-Length\" title=\"The documentation about this has not yet been written; please consider contributing!\"><code>Content-Length</code></a>, <a href=\"/en-US/docs/Web/HTTP/Headers/Content-Language\" title=\"The Content-Language entity header is used to describe the language(s) intended for the audience, so that it allows a user to differentiate according to the users' own preferred language.\"><code>Content-Language</code></a>, <a href=\"/en-US/docs/Web/HTTP/Headers/Content-Encoding\" title=\"The Content-Encoding entity header is used compress the media-type. When present, its value indicates what additional content encoding has been applied to the entity-body. It lets the client know, how to decode in order to obtain the media-type referenced by the Content-Type header.\"><code>Content-Encoding</code></a> are entity headers.", "sections": [{"id": "Learn_more", "title": "Learn more"}, {"id": "Technical_knowledge", "title": "Technical knowledge"}], "slug": "Glossary/Entity_header", "review_tags": []}