danicoin/external/unbound/libunbound/python/doc/examples/example5.rst

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2014-10-05 21:44:31 +00:00
.. _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.
::
#!/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).