#20 DNS.revlookup crashes on server error

[Scott Kitterman]

Python 2.6.4 (r264:75706, Dec 7 2009, 18:45:15)
[GCC 4.4.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import DNS
>>> DNS.revlookup('96.51.148.193')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.6/dist-packages/DNS/lazy.py", line 20, in revlookup
return Base.DnsRequest(b, qtype = 'ptr').req().answers[0]['data']
IndexError: list index out of range

Patch to return the DNS status instead attached.

[Scott Kitterman]

Better patch

[Scott Kitterman]

Fixed in py3dns 3.0.0. Still open for python2.

[Stuart D. Gathman]

An exception for the status error is good. If there is no PTR, however, this should return None. Also, revlookup should call revlookupall() and return the shortest (first?) name.

[Stuart D. Gathman]

Concept incorporated in pydns-2.3.5