getdns will throw an exception,
getdns.error, under certain conditions. Those conditions include:
- a required parameter having a bad value
- a badly-formed domain name in the query
- a bad
- a failed
- an out-of-bounds error for a getdns data structure
- requesting an extension that doesn’t exist
- requesting DNSSEC validation while using stub resolution
Please note that a successful return from a getdns method does not indicate that the query returned the records being requested, but rather that the query is formed correctly and has been submitted to the DNS. A getdns exception is typically the result of a coding error.
getdns will set the exception message to a diagnostic string, which may be examined for help in resolving the error.
import getdns, sys c = getdns.Context() try: results = c.address('www.example.com', foo='bar') except getdns.error, e: print(str(e)) sys.exit(1)
This will result in “A required parameter had an invalid value” being printed to the screen.