Revert "Add user-agent header for providers."

This reverts commit 2032e47.

Conflicts:
	gandi_dyndns.py

Author: foudfou

gandi_dyndns.py

@@ -15,9 +15,6 @@
 # multiple-provider agreement before returning an IP.
 IP_ADDRESS_REGEX = re.compile('\d{1,3}(?:\.\d{1,3}){3}')
 
-USER_AGENT = 'Mozilla/5.0'
-
-
 class GandiServerProxy(object):
   '''
   Proxy calls to an internal xmlrpclib.ServerProxy instance, accounting for the
@@ -66,9 +63,8 @@ def get_external_ip_from_url(url):
   '''Get all the IP addresses found at a given URL.'''
 
   # open the website, download its data, and return all IP strings found
-  opener = urllib2.build_opener()
-  opener.addheaders = [('User-agent', USER_AGENT)]
-  data = opener.open(url, timeout=10).read()
+  # we want to respect some site's filtering on User-Agent.
+  data = urllib2.urlopen(url, timeout=10).read()
   addys = IP_ADDRESS_REGEX.findall(data)
   return addys