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Re: urllib2 timeout issue

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  Re: urllib2 timeout issue Vincent Vande Vyvre <vincent.vandevyvre@swing.be> - 2013-10-16 12:04 +0200
    Re: urllib2 timeout issue Tobiah <toby@tobiah.org> - 2013-10-16 09:06 -0700

#56877 — Re: urllib2 timeout issue

Le 16/10/2013 11:21, Jérôme a écrit :
> Hi all.
>
> I'm having troubles with urllib2 timeout.
>
> See the following script :
>
> ----------------------------
> import urllib2
> result = urllib2.urlopen("http://dumdgdfgdgmyurl.com/")
> print result.readline()
> ----------------------------
>
> If run on my Debian Wheezy computer, or on my Debian Squeeze server,
> the answer is instantaneous :
>
> [...]
> urllib2.URLError: <urlopen error [Errno -2] Name or service not known>
>
> When run on my Raspberry Pi with Raspian Wheezy, the answer is
> identical but it takes 10 seconds.
>
> I tried
>
>      result = urllib2.urlopen("http://dumdgdfgdgmyurl.com/", timeout=5)
>
> but I get the same results : instantaneous on Debian, 10 secondes on
> RPi.
>
> I also added this, as suggested on some StackOverflow pages :
>
>      import socket
>      socket.setdefaulttimeout(5)
>
> and it didn't make any difference.
>
> In both cases, Python version is "Python 2.7.3".
>
> Am I missing something ?
>
> Thanks.
>
The url "dumdgdfgdgmyurl.com/" is just an example ?

If not, the result  <urlopen error [Errno -2] Name or service not known> 
is normal.
-- 
Vincent V.V.
Oqapy <https://launchpad.net/oqapy> . Qarte 
<https://launchpad.net/qarte> . PaQager <https://launchpad.net/paqager>

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#56884

>> If run on my Debian Wheezy computer, or on my Debian Squeeze server,
>> the answer is instantaneous :
>>
>> [...]
>> urllib2.URLError: <urlopen error [Errno -2] Name or service not known>
>>
>> When run on my Raspberry Pi with Raspian Wheezy, the answer is
>> identical but it takes 10 seconds.

What happens when you use ping to resolve that address.  Do you get
the same results?  If so, I'd say you have a DNS problem.  Maybe
you have two DNS servers listed in /etc/resolv.conf or similar, and
the first one is unavailable, so it takes 10 seconds to fail over
to the second working server.

Tobiah

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