[SOLVED] VMware HTML Console SDK connection failed

VMware HTML Console SDK connection failed

Hello VMware Community,

I'm encountering an issue when trying to connect to an HTML console via WebSocket. Below is the process I followed and the error I'm experiencing. Any guidance would be greatly appreciated.

Using Python, I retrieved VNC connection information for a virtual machine. The code snippet used is as follows:

try:
    ticket = vm.AcquireMksTicket()
    print("VNC connection information for {}:".format(vm_name))
    print("Host: {}".format(ticket.host))
    print("Port: {}".format(ticket.port))
    print("Ticket: {}".format(ticket.ticket))
    print("SSL thumbprint: {}".format(ticket.sslThumbprint))
except vmodl.MethodFault as e:
    print("Failed to get VNC connection information: {}".format(e.msg))
    exit(1)

This resulted in the following

VNC connection information for dev-test - 10.xxxxxxxxxxxx:
Host: ch1-dev-esxi1.lab.local
Port: 902
Ticket: 52xxxxxxxxxxxxxxxxxxxxxxxx
SSL thumbprint: [Thumbprint]

Issue:

However, when attempting to use this information to connect to the HTML console, I'm facing a WebSocket connection failure. The error message is:

WebSocket connection to 'wss://[IP]:[Port]/ticket/[Ticket-ID]' failed

Here's the HTML and JavaScript code I used for the connection:

<!DOCTYPE html>
... [Rest of the HTML code] ...
<script>
var wmks = WMKS.createWMKS("wmksContainer",{})
  .register(WMKS.CONST.Events.CONNECTION_STATE_CHANGE, function(event, data){
    if(data.state == WMKS.CONST.ConnectionState.CONNECTED){
      console.log("connection state change: connected");
    }
  });
wmks.connect("wss://ch1-dev-esxi1.lab.local:902/ticket/52dxxxxxxxxxxxxxxx");
</script>
</body>
</html>

Additional Checks:

The VM is running without issues.

VMware Tools are installed, current, and running (Version 12288, 12.0.0).

I'm unsure why this WebSocket connection is failing. Has anyone experienced a similar issue or can provide some insights into what might be going wrong?

Thank you in advance for your help!

Solution

The issue is resolved now. The issue was related to ticket that was created by following line in my Python Script

ticket = vm.AcquireMksTicket()

I replaced above line with the following line.

 ticket = vm.AcquireTicket(ticketType='webmks')

AcquireMksTicket only works with very old vSphere versions.