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Disable DNS prefetching

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Simon Ser 2020-01-20 18:26:22 +01:00
parent a66ef1059b
commit b9a180b154
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1 changed files with 2 additions and 0 deletions
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2
server.go
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@ -305,6 +305,8 @@ func New(e *echo.Echo, options *Options) (*Server, error) {
// `style-src 'unsafe-inline'` is required for e-mails with
// embedded stylesheets
ectx.Response().Header().Set("Content-Security-Policy", "default-src 'self'; style-src 'self' 'unsafe-inline'")
// DNS prefetching has privacy implications
ectx.Response().Header().Set("X-DNS-Prefetch-Control", "off")
return next(ectx)
}
})