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mod_http_oauth2: Make allowed locales configurable Explicit > Implicit Instead of allowing anything after #, allow only the explicitly configured locales to be used. Default to empty list because using these is not supported yet. This potentially limits the size of the client_id, which is already quite large. Nothing prevents clients from registering a whole client_id per locale, which would not require translation support on this side.

local hostname = module:get_option_string("sasl_hostname", module.host);

module:hook("stream-features", function(event)
	local features = event.features;
	local mechs = features:get_child("mechanisms", "urn:ietf:params:xml:ns:xmpp-sasl");
	if mechs then
		mechs:tag("hostname", { xmlns = "urn:xmpp:domain-based-name:1" })
			:text(hostname):up();
	end
end);