User Agent

Oh, my god, we have a brand new user agent by default:

>>> br = Browser()
...  we can have the output from the config creation there
>>> br.open('http://localhost:45678')
>>> FF2_USERAGENT in br.contents
True
>>> br2 = Browser('http://localhost:45678')
>>> FF2_USERAGENT in br2.contents
True

Proxy mode

But, we want to be anonymous, and we ll set a proxy To define those proxies, just just a config.ini file like:

[collective.anonymousbrowser]
proxies =
    host1:port
    host2:port

When the browser has many proxies defined, it will circly through those ones. But, it will not use the same host indefinitivly, just set the proxy_max_use argument:

>>> from StringIO import StringIO
>>> from tempfile import mkstemp
>>> __, config = mkstemp()
>>> open(config, 'w').write("""[collective.anonymousbrowser]
... proxies =
...     127.0.0.1:45675
...     127.0.0.1:45676
...     127.0.0.1:45677
...     127.0.0.1:45678
...     127.0.0.1:45679
...     """)
>>> b = Browser(config=config)
>>> b._config._sections
{'collective.anonymousbrowser': {'__name__': 'collective.anonymousbrowser', 'proxies': '\n127.0.0.1:45675\n127.0.0.1:45676\n127.0.0.1:45677\n127.0.0.1:45678\n127.0.0.1:45679'}}
>>> b.proxies
['127.0.0.1:45675', '127.0.0.1:45676', '127.0.0.1:45677', '127.0.0.1:45678', '127.0.0.1:45679']
>>> b.proxified
True
>>> b.open('http://localhost:45678')
>>> 'Host: localhost:45678' in b.contents
True
>>> b._lastproxy['count'] == 1 and b._lastproxy['proxy'] in [0,1,2,3,4]
True

We can have a normal unproxified brower too

>>> b1 = Browser(proxify=False)
>>> b1.proxified
False

Next thing to verify is that we have our pseudo-random loop running First thing is we will choose 2 times the 2nd proxy, then the third And of course, we will set the mocker to change the proxy at each row.:

>>> import mocker
>>> import random
>>> mocked = mocker.Mocker()
>>> custom_random_int = mocked.replace('random.randint')
>>> custom_random_int(0, 4)
<mocker.Mock ...
>>> mocked.result(2)
>>> custom_random_int(0,1)
<mocker.Mock ...
>>> mocked.result(0)
>>> custom_random_int(0, 4)
<mocker.Mock ...
>>> mocked.result(2)
>>> custom_random_int(0,1)
<mocker.Mock ...
>>> mocked.result(0)
>>> custom_random_int(0, 4)
<mocker.Mock ...
>>> mocked.result(2)
>>> custom_random_int(0,1)
<mocker.Mock ...
>>> mocked.result(0)
>>> custom_random_int(0, 4)
<mocker.Mock ...
>>> mocked.result(3)
>>> custom_random_int(0,1)
<mocker.Mock ...
>>> mocked.result(0)
>>> custom_random_int(0, 4)
<mocker.Mock ...
>>> mocked.result(4)
>>> custom_random_int(0,1)
<mocker.Mock ...
>>> mocked.result(0)
>>> custom_random_int(0, 4)
<mocker.Mock ...
>>> mocked.result(2)
>>> custom_random_int(0,1)
<mocker.Mock ...
>>> mocked.result(0)
>>> custom_random_int(0, 4)
<mocker.Mock ...
>>> mocked.result(1)
>>> custom_random_int(0,1)
<mocker.Mock ...
>>> mocked.result(0)
>>> mocked.replay()
>>> b = Browser('http://localhost:45678', config=config)
>>> b.open('http://localhost:45678')
>>> b._lastproxy
{'count': 1, 'proxy': 2}
>>> b.open('http://localhost:45678')
>>> b._lastproxy
{'count': 2, 'proxy': 2}
>>> b.open('http://localhost:45678')
>>> b._lastproxy
{'count': 3, 'proxy': 2}
>>> b.open('http://localhost:45678')
>>> b._lastproxy
{'count': 1, 'proxy': 0}
>>> b.open('http://localhost:45678')
>>> b._lastproxy
{'count': 1, 'proxy': 3}
>>> b.open('http://localhost:45678')
>>> b._lastproxy
{'count': 1, 'proxy': 4}
>>> b.open('http://localhost:45678')
>>> b._lastproxy
{'count': 1, 'proxy': 2}
>>> b.open('http://localhost:45678')
>>> b._lastproxy
{'count': 1, 'proxy': 1}
>>> mocked.restore()

If the proxies are dead, we remove them from the list:

>>> __, config = mkstemp()
>>> open(config, 'w').write("""[collective.anonymousbrowser]
... proxies =
...     127.0.0.1:35675
...     127.0.0.1:35676
...     127.0.0.1:35677
...     127.0.0.1:45678
...     """)
>>> mybrowser = Browser(config=config)
>>> mybrowser.proxies
['127.0.0.1:35675', '127.0.0.1:35676', '127.0.0.1:35677', '127.0.0.1:45678']
>>> mybrowser.open('http://localhost:45678')
>>> mybrowser.proxies
['127.0.0.1:45678']

The loop is recursion protected. If we return always the same host, so the chooser cannot choose anything else. It will loop until it crashes or it handle the recursion:

>>> def randomint(a,b):
...     return 2
>>> import random; random.randint = randomint
>>> b2 = Browser(config=config)
>>> b2.proxy_max_use
3
>>> b2._lastproxy['count']
0
>>> b2.chooseProxy()
'...
>>> b2._lastproxy['count']
1
>>> b2.chooseProxy()
'...
>>> b2._lastproxy['count']
2
>>> b2.chooseProxy()
'...
>>> b2._lastproxy['count']
3
>>> b2.chooseProxy()
'...
>>> b2.chooseProxy()
Ho, seems we got the max wills to choose, something has gone wrong
'127.0.0.1:35675'

0.2

• Adding proxy fallback facility

0.1

• Initial release