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@sime sime/o2_google.txt
Last active Aug 29, 2015

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o2 resolving Google CDN static content
# o2 ADSL, Berlin Mitte
# Using cURL, fetch the jQuery library within ten seconds.
$ curl -m 10 http://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.js > /dev/null
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- 0:00:09 --:--:-- 0
curl: (28) Connection timed out after 10005 milliseconds
# Content from ajax.googleapis.com (and fonts.googleapis.com) time out!
# Let's check the DNS.
$ dig a fonts.googleapis.com +short @192.168.1.1
googleapis.l.google.com.
173.194.65.95
# Try cURL again without DNS, and hit the IP directly.
$ curl -m 10 -H 'Host: ajax.googleapis.com' http://173.194.67.95/ajax/libs/jquery/2.1.3/jquery.js > /dev/null
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 241k 0 241k 0 0 782k 0 --:--:-- --:--:-- --:--:-- 784k
# It works! So why does hitting the IP directly work, but looking up the domain fail?
# I have been using o2 since September 27 and have had the problem since day one.
# Previously I thought using Google DNS solved the problem, but I got the best
# results by hard coding Google IPs in my host file. But this does not scale.
# See previous Twitter conversations. https://twitter.com/search?f=realtime&q=from%3Asimonmales%20to%3Ao2de&src=typd
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