mod_http_admin_api: metrics: Filter out a value that is commonly nan at startup The upload bytes count is typically nan at startup, which cannot legally be encoded in JSON. I haven't assessed whether any other metrics might emit nan under other circumstances, but this fixes the most visible issue right now.

module:depends("smacks");

module:hook("smacks-ack-delayed", function (event)
	if event.origin.type == "s2sin" or event.origin.type == "s2sout" then
		event.origin:close("connection-timeout");
		return true;
	end
end);