fun allowHost(host: String, schemes: List<String> = listOf("http"), subDomains: List<String> = emptyList())

Allows requests from the specified domains and schemes. A wildcard is supported for either the host or any subdomain. If you specify a wildcard in the host, you cannot add specific subdomains. Otherwise, you can mix wildcard and non-wildcard subdomains as long as the wildcard is always in front of the domain, e.g. * but not sub.*