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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
    Basic Support4123.510124?
    Feature Android Chrome for Android Edge Mobile Firefox for Android IE Mobile Opera Mobile Safari Mobile
    Basic Support2.1(Yes)(Yes)1.0(Yes)123.2

    See also

    Document Tags and Contributors

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