請問 connection client是連接哪一個網址?
非常抱歉漏看了您的问题，关于CONNECTION Client需要链接哪些网址，您可以参考如下帖子中的 Which domains does the CONNECTION Client access? 部分查看，目前为止列出了如下网址，需要加入访问白名单，谢谢：
Whitelist *.Bentley.com AND *.signalr.net, or the following. A description of each domain's purpose is provided below:
We do not give IP addresses as they are not static and could change at any time. IP range is also not available, also see IP Address Hosted Server.
The web services above may not have web pages for display in a browser since their intended audience is a Bentley product, not an end user. The list provided is to ensure any outgoing web traffic to these addresses is not blocked.