Errors when using package

Error: I want to use transport "foo", but it's not advertised

Example:

• $ rostopic list
  /camera/image
  /camera/image/compressed
  
  # No listing for /camera/image/foo

Solution:

• Does transport "foo" exist? Is the package providing it built?

  • See the Managing Transport Plugins tutorial, which will show you how to find out which transports are available and enabled on your system.