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57 lines
2.1 KiB
Python
57 lines
2.1 KiB
Python
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#!/usr/bin/python
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'''
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async-lookup.py : This example shows how to use asynchronous lookups
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Authors: Zdenek Vasicek (vasicek AT fit.vutbr.cz)
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Marek Vavrusa (xvavru00 AT stud.fit.vutbr.cz)
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Copyright (c) 2008. All rights reserved.
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This software is open source.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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'''
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import unbound
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import time
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ctx = unbound.ub_ctx()
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ctx.resolvconf("/etc/resolv.conf")
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def call_back(my_data,status,result):
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print("Call_back:", my_data)
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if status == 0 and result.havedata:
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print("Result:", result.data.address_list)
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my_data['done_flag'] = True
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my_data = {'done_flag':False,'arbitrary':"object"}
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status, async_id = ctx.resolve_async("www.nic.cz", my_data, call_back, unbound.RR_TYPE_A, unbound.RR_CLASS_IN)
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while (status == 0) and (not my_data['done_flag']):
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status = ctx.process()
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time.sleep(0.1)
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if (status != 0):
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print("Resolve error:", unbound.ub_strerror(status))
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