description

# defaultResponseHeaders property Null safety

HttpHeaders defaultResponseHeaders

Default set of headers added to all response objects.

By default the following headers are in this set:

    Content-Type: text/plain; charset=utf-8
    X-Frame-Options: SAMEORIGIN
    X-Content-Type-Options: nosniff
    X-XSS-Protection: 1; mode=block

If the `Server` header is added here and the `serverHeader` is set as well then the value of `serverHeader` takes precedence.

## Implementation

    HttpHeaders get defaultResponseHeaders;