public boolean isNonProxyHost(String host) {
        return proxy != null && noProxyRegex.matcher(host).matches();
    }
Determine whether the given host should not be proxied.

@param host hostname to test
@return true if is a `non proxy` host
gateway/platforms/vertx3/vertx3/src/main/java/io/apiman/gateway/platforms/vertx3/engine/proxy/JavaSysPropsProxySettings.java