Endpoint

SDK 提供在 Client 中配置 endpoint 并且同时配置 http/https 相关协议：

var client = new RPCClient({
  accessKeyId: '<accessKeyId>',
  accessKeySecret: '<accessKeySecret>',
  // http 
  endpoint: 'http://xxxxxx',
  // https
  // endpoint: 'https://xxxxxx',
  apiVersion: '<apiVersion>'
});