HTTP Meta Data
By default, the client sends some meta data about the HTTP connection using custom headers.
You can disable or enable it using the following methods:
The client sends ax-elastic-client-meta header by default. This header is used to collect meta data about the versions of the components used by the client. For instance, a value ofx-elastic-client-meta can bees=8.0.0-s,php=8.0.0,t=8.0.0-s,a=0,gu=7.4.2, where each value is the version ofes=Elasticsearch,tis the transport version (same of client),a is asyncronouts (0=falseby default) andgu=Guzzle`.
If you would like to disable it you can use thesetElasticMetaHeader() method, as follows:
$client = Elasticsearch\ClientBuilder::create() ->setElasticMetaHeader(false) ->build();