example2.rst revision 238106
1.. _example_setup_ctx: 2 3============================== 4Lookup from threads 5============================== 6 7This example shows how to use unbound module from a threaded program. 8In this example, three lookup threads are created which work in background. 9Each thread resolves different DNS record. 10 11:: 12 13 #!/usr/bin/python 14 from unbound import ub_ctx, RR_TYPE_A, RR_CLASS_IN 15 from threading import Thread 16 17 ctx = ub_ctx() 18 ctx.resolvconf("/etc/resolv.conf") 19 20 class LookupThread(Thread): 21 def __init__(self,ctx, name): 22 Thread.__init__(self) 23 self.ctx = ctx 24 self.name = name 25 26 def run(self): 27 print "Thread lookup started:",self.name 28 status, result = self.ctx.resolve(self.name, RR_TYPE_A, RR_CLASS_IN) 29 if status == 0 and result.havedata: 30 print " Result:",self.name,":", result.data.address_list 31 32 threads = [] 33 for name in ["www.fit.vutbr.cz","www.vutbr.cz","www.google.com"]: 34 thread = LookupThread(ctx, name) 35 thread.start() 36 threads.append(thread) 37 38 for thread in threads: 39 thread.join() 40 41 42