noVNC cannot connect to the virtual machine under Xen?
  
the platform version of the problem and what methods you have tried
 latest version of noVNC 
 xenserver6.1 
what result do you expect? What is the error message actually seen?
 error message is shown in figure 
 according to officials, the novnc connection to the back-end VNC server only wraps the OpenStack 
 XenServer virtual machine VNC console connection. How to further configure? Or how to customize it to support it? 
