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urllib2 timeout issue

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  urllib2 timeout issue Jérôme <jerome@jolimont.fr> - 2013-10-16 11:21 +0200
    Re: urllib2 timeout issue Piet van Oostrum <piet@vanoostrum.org> - 2013-10-16 07:58 -0400

#56876 — urllib2 timeout issue

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.

-- 
Jérôme

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#56880

Jérôme <jerome@jolimont.fr> writes:

> 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 ?
>

I would guess the difference to be caused by DNS. Maybe the DNS configuration on the RPi is not optimal.
-- 
Piet van Oostrum <piet@vanoostrum.org>
WWW: http://pietvanoostrum.com/
PGP key: [8DAE142BE17999C4]

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