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    Access-Control-Request-Headers

    The Access-Control-Request-Headers request header is used when issuing a preflight request to let the server know which HTTP headers will be used when the actual request is made.

    Header type Request header
    Forbidden header name yes

    Syntax

    Access-Control-Request-Headers: <header-name>, <header-name>, ...

    Directives

    <header-name>
    A comma-delimited list of HTTP headers that are included in the request.

    Examples

    Access-Control-Request-Headers: X-PINGOTHER, Content-Type

    Specifications

    Specification Status Comment
    Fetch
    The definition of 'Access-Control-Request-Headers' in that specification.    		 Living Standard Initial definition.

    Browser compatibility

    Feature Chrome Edge Firefox Internet Explorer Opera Safari Servo
    Access-Control-Request-Headers4123.510124?
    Feature Android Chrome for Android Edge Mobile Firefox for Android IE Mobile Opera Mobile Safari Mobile
    Access-Control-Request-Headers2.1(Yes)(Yes)1.0(Yes)123.2

    See also

    Document Tags and Contributors

    Tags: 
     Contributors to this page: fscholz, teoli
     Last updated by: fscholz,