检测WebSocket的无效证书

Question

是否可以检测到由于证书无效而关闭了安全websocket？

若然，怎么样？

Answer 1

不，这是不可能的。

客户端将以1006代码关闭：

  

1006

  1006 is a reserved value and MUST NOT be set as a status code in a
  Close control frame by an endpoint.  It is designated for use in
  applications expecting a status code to indicate that the
  connection was closed abnormally, e.g., without sending or
  receiving a Close control frame.

此外，将调用onerror处理程序，但它没有提及证书或其他特定问题。

http://tools.ietf.org/html/rfc6455#section-7.4