FAQ

General FAQ

• I am having trouble running the samples, what can I do to debug them?
• I receive a timeout, "dxlclient.exceptions.WaitTimeoutException: Timeout waiting for response to message", or an error, "Exception: Error: Invalid Command. (0)", when attempting to invoke a valid ePO command via DXL
• I receive an error similar to the following, "Error: unable to locate service for request (-2147483647)", when attempting to invoke an ePO command via DXL

General

Q: I am having trouble running the samples, what can I do to debug them?

A: The following steps are generally useful for debugging the samples:

• Ensure the prerequisites for the ePO DXL client have been met.

• Switch from ERROR to DEBUG logging in the samples as shown below:

  # Configure local logger
  logging.getLogger().setLevel(logging.ERROR)

  Change to:

  # Configure local logger
  logging.getLogger().setLevel(logging.DEBUG)

Q: I receive a timeout, "dxlclient.exceptions.WaitTimeoutException: Timeout waiting for response to message", or an error, "Exception: Error: Invalid Command. (0)", when attempting to invoke a valid ePO remote command via DXL

A: This typically occurs due to the Python client not having permission to send the remote command to the ePO server.

The following page provides information about authorizing clients to access the ePO DXL service:

https://opendxl.github.io/opendxl-epo-client-python/pydoc/authorization.html

Q: I receive an error similar to the following, "Error: unable to locate service for request (-2147483647)", when attempting to invoke an ePO command via DXL

A: There are a couple common reasons why this error occurs:

• The ePO DXL service is not running.
• The uniqueId specified in the request (last portion of the request topic) does not match an ePO server currently exposed to the DXL fabric.