1. If it has a default extension:
(1). user didn't provide -> use default.
(2). user provided -> use provided one.
2. If not:
(1). user didn't provide -> throw exception.
(2). user provided -> use provided one.`String extName = (url.getProtocol() == null ? "dubbo" : url.getProtocol());` This is useful into case 1. :) [ Full content available at: https://github.com/apache/incubator-dubbo/issues/2398 ] This message was relayed via gitbox.apache.org for [email protected]
