monero/external/unbound/libunbound/python/doc/examples/example5.rst
Erik de Castro Lopo a85b5759f3 Upgrade unbound library
These files were pulled from the 1.6.3 release tarball.

This new version builds against OpenSSL version 1.1 which will be
the default in the new Debian Stable which is due to be released
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2017-06-17 23:04:00 +10:00

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.. _example_resolver_only:
Resolver only
=============
This example program shows how to perform DNS resolution only.
Unbound contains two basic modules: resolver and validator.
In case, the validator is not necessary, the validator module can be turned off
using "module-config" option.
This option contains a list of module names separated by the space char. This
list determined which modules should be employed and in what order.
Source code
-----------
::
#!/usr/bin/python
import os
from unbound import ub_ctx,RR_TYPE_A,RR_CLASS_IN
ctx = ub_ctx()
ctx.set_option("module-config:","iterator")
ctx.resolvconf("/etc/resolv.conf")
status, result = ctx.resolve("www.google.com", RR_TYPE_A, RR_CLASS_IN)
if status == 0 and result.havedata:
print "Result:", result.data.address_list
.. note::
The :meth:`unbound.ub_ctx.set_option` method must be used before the first
resolution (i.e. before :meth:`unbound.ub_ctx.resolve` or
:meth:`unbound.ub_ctx.resolve_async` call).