PubSubConnection.BadTopicException Class

Bad topic exceptions are thrown when an application tries to perform an operation using a topic that does not conform to the topic grammar. All topics must conform as follows:

• Topics cannot start with '.'.
• Topics cannot end in '.'.
• Topics cannot contain Unicode characters.
• Topics must only contain printable characters or 'space'.
• Topics cannot contain consecutive '.' characters.
• Topics that contain a '|' character, which denotes a filter, must have a matching '|'.
• Topics starting with "pubsub" are reserved and the use is restricted.