[apple/network_cmds.git] / unbound / libunbound / python / examples / async-lookup.py

#!/usr/bin/python
'''
 async-lookup.py : This example shows how to use asynchronous lookups

 Authors: Zdenek Vasicek (vasicek AT fit.vutbr.cz)
          Marek Vavrusa  (xvavru00 AT stud.fit.vutbr.cz)

 Copyright (c) 2008. All rights reserved.

 This software is open source.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions
 are met:
 
 Redistributions of source code must retain the above copyright notice,
 this list of conditions and the following disclaimer.
 
 Redistributions in binary form must reproduce the above copyright notice,
 this list of conditions and the following disclaimer in the documentation
 and/or other materials provided with the distribution.
 
 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGE.
'''
import unbound
import time

ctx = unbound.ub_ctx()
ctx.resolvconf("/etc/resolv.conf")

def call_back(my_data,status,result):
    print("Call_back:", my_data)
    if status == 0 and result.havedata:
        print("Result:", result.data.address_list)
        my_data['done_flag'] = True


my_data = {'done_flag':False,'arbitrary':"object"}
status, async_id = ctx.resolve_async("www.nic.cz", my_data, call_back, unbound.RR_TYPE_A, unbound.RR_CLASS_IN)
        
while (status == 0) and (not my_data['done_flag']):
    status = ctx.process()
    time.sleep(0.1)

if (status != 0):
    print("Resolve error:", unbound.ub_strerror(status))
Commit	Line	Data
89c4ed63 A	1	#!/usr/bin/python
	2	'''
	3	async-lookup.py : This example shows how to use asynchronous lookups
	4
	5	Authors: Zdenek Vasicek (vasicek AT fit.vutbr.cz)
	6	Marek Vavrusa (xvavru00 AT stud.fit.vutbr.cz)
	7
	8	Copyright (c) 2008. All rights reserved.
	9
	10	This software is open source.
	11
	12	Redistribution and use in source and binary forms, with or without
	13	modification, are permitted provided that the following conditions
	14	are met:
	15
	16	Redistributions of source code must retain the above copyright notice,
	17	this list of conditions and the following disclaimer.
	18
	19	Redistributions in binary form must reproduce the above copyright notice,
	20	this list of conditions and the following disclaimer in the documentation
	21	and/or other materials provided with the distribution.
	22
	23	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	24	"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
	25	TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	26	PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
	27	LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	28	CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	29	SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	30	INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	31	CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	32	ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	33	POSSIBILITY OF SUCH DAMAGE.
	34	'''
	35	import unbound
	36	import time
	37
	38	ctx = unbound.ub_ctx()
	39	ctx.resolvconf("/etc/resolv.conf")
	40
	41	def call_back(my_data,status,result):
	42	print("Call_back:", my_data)
	43	if status == 0 and result.havedata:
	44	print("Result:", result.data.address_list)
	45	my_data['done_flag'] = True
	46
	47
	48	my_data = {'done_flag':False,'arbitrary':"object"}
	49	status, async_id = ctx.resolve_async("www.nic.cz", my_data, call_back, unbound.RR_TYPE_A, unbound.RR_CLASS_IN)
	50
	51	while (status == 0) and (not my_data['done_flag']):
	52	status = ctx.process()
	53	time.sleep(0.1)
	54
	55	if (status != 0):
	56	print("Resolve error:", unbound.ub_strerror(status))