[[http-clients]] === HTTP/REST Clients and Security {security} works with standard HTTP {wikipedia}/Basic_access_authentication[basic authentication] headers to authenticate users. Since Elasticsearch is stateless, this header must be sent with every request: [source,shell] -------------------------------------------------- Authorization: Basic <TOKEN> <1> -------------------------------------------------- <1> The `<TOKEN>` is computed as `base64(USERNAME:PASSWORD)` [float] ==== Client examples This example uses `curl` without basic auth to create an index: [source,shell] ------------------------------------------------------------------------------- curl -XPUT 'localhost:9200/idx' ------------------------------------------------------------------------------- [source,js] ------------------------------------------------------------------------------- { "error": "AuthenticationException[Missing authentication token]", "status": 401 } ------------------------------------------------------------------------------- Since no user is associated with the request above, an authentication error is returned. Now we'll use `curl` with basic auth to create an index as the `rdeniro` user: [source,shell] --------------------------------------------------------- curl --user rdeniro:taxidriver -XPUT 'localhost:9200/idx' --------------------------------------------------------- [source,js] --------------------------------------------------------- { "acknowledged": true } --------------------------------------------------------- [float] ==== Client Libraries over HTTP For more information about how to use {security} with the language specific clients please refer to https://github.com/elasticsearch/elasticsearch-ruby/tree/master/elasticsearch-transport#authentication[Ruby], http://elasticsearch-py.readthedocs.org/en/master/#ssl-and-authentication[Python], https://metacpan.org/pod/Search::Elasticsearch::Cxn::HTTPTiny#CONFIGURATION[Perl], http://www.elastic.co/guide/en/elasticsearch/client/php-api/current/_security.html[PHP], http://nest.azurewebsites.net/elasticsearch-net/security.html[.NET], http://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/auth-reference.html[Javascript] //// Groovy - TODO link ////