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Elastic Docs ›Elasticsearch-PHP [8.15] ›Configuration

HTTP Meta Data

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HTTP Meta Data

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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:

Elastic Meta Header

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The client sends a x-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 of x-elastic-client-meta can be es=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 of `es=Elasticsearch, t is the transport version (same of client), a is asyncronouts (0=false by default) and gu=Guzzle.

If you would like to disable it you can use the setElasticMetaHeader() method, as follows:

$client = Elasticsearch\ClientBuilder::create()
    ->setElasticMetaHeader(false)
    ->build();
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