In article <mailman.3666.1352873042.27098.python-l...@python.org>, William Ray Wing <w...@mac.com> wrote:
> On Nov 13, 2012, at 11:41 PM, Roy Smith <r...@panix.com> wrote: > > > In article <mailman.3664.1352867713.27098.python-l...@python.org>, > > w...@mac.com wrote: > > > >> I need to time the operation of a command-line utility (specifically > >> nslookup) from within a python program I'm writing. > > > > Ugh. Why are you doing this? Shelling out to nslookup is an incredibly > > slow and clumsy way of doing name translation. What you really want to > > be doing is calling getaddrinfo() directly. > > > > See http://docs.python.org/2/library/socket.html#socket.getaddrinfo for > > details. > > -- > Because, unless I'm badly mistaken (very possible), getaddrinfo doesn't let > me specify the server from which the name is returned. I'm really not after > the name, what I'm REALLY after is the fact that a path exists to the name > server I specify (and how long it takes to respond). In the "good old days" I > would just have ping'd it, but these days more and more DNS boxes (and > servers of all sorts) are shutting off their ping response. > > Thanks, Bill Oh, my. You're using DNS as a replacement for ping? Fair enough. In that case, all you really care about is that you can connect to port 53 on the server... import socket import time s = socket.socket() t0 = time.time() s.connect(('8.8.8.8', 53)) t1 = time.time() print "it took %f seconds to connect" % (t1 - t0) -- http://mail.python.org/mailman/listinfo/python-list
