diff --git a/Allura/allura/scripts/trac_export.py b/Allura/allura/scripts/trac_export.py
index d53afbc..4d908bc 100644
--- a/Allura/allura/scripts/trac_export.py
+++ b/Allura/allura/scripts/trac_export.py
@@ -18,7 +18,6 @@
 #       under the License.
 
 import logging
-import socket
 import sys
 import csv
 import urlparse
@@ -28,14 +27,20 @@
 import re
 from optparse import OptionParser
 from itertools import islice
-from datetime import datetime
 
 import feedparser
 from BeautifulSoup import BeautifulSoup, NavigableString
 import dateutil.parser
 import pytz
 
-from allura.lib import helpers as h
+try:
+    from forgeimporters.base import ProjectExtractor
+    urlopen = ProjectExtractor.urlopen
+except ImportError:
+    try:
+        from allura.lib.helpers import urlopen
+    except ImportError:
+        from urllib2 import urlopen
 
 log = logging.getLogger(__name__)
 
@@ -124,7 +129,7 @@
 
     def csvopen(self, url):
         self.log_url(url)
-        f = h.urlopen(url)
+        f = urlopen(url)
         # Trac doesn't throw 403 error, just shows normal 200 HTML page
         # telling that access denied. So, we'll emulate 403 ourselves.
         # TODO: currently, any non-csv result treated as 403.
@@ -146,7 +151,7 @@
         from html2text import html2text
         url = self.full_url(self.TICKET_URL % id, 'rss')
         self.log_url(url)
-        d = feedparser.parse(h.urlopen(url))
+        d = feedparser.parse(urlopen(url))
         res = []
         for comment in d['entries']:
             c = {}
@@ -163,7 +168,7 @@
         # Scrape HTML to get ticket attachments
         url = self.full_url(self.ATTACHMENT_LIST_URL % id)
         self.log_url(url)
-        f = h.urlopen(url)
+        f = urlopen(url)
         soup = BeautifulSoup(f)
         attach = soup.find('div', id='attachments')
         list = []
diff --git a/ForgeImporters/forgeimporters/base.py b/ForgeImporters/forgeimporters/base.py
index e1af4f7..ee34ab3 100644
--- a/ForgeImporters/forgeimporters/base.py
+++ b/ForgeImporters/forgeimporters/base.py
@@ -16,6 +16,7 @@
 #       under the License.
 
 import logging
+import urllib2
 
 from pkg_resources import iter_entry_points
 
@@ -28,6 +29,7 @@
 from allura.lib.decorators import task
 from allura.lib.security import require_access
 from allura.lib.plugin import ProjectRegistrationProvider
+from allura.lib import helpers as h
 from allura.lib import exceptions
 
 from paste.deploy.converters import aslist
@@ -57,6 +59,20 @@
             mount_point=mount_point, mount_label=mount_label, **kw)
 
 
+class ProjectExtractor(object):
+    """Base class for project extractors.
+
+    Subclasses should use :meth:`urlopen` to make HTTP requests, as it provides
+    a custom User-Agent and automatically retries timed-out requests.
+
+    """
+    @staticmethod
+    def urlopen(url, retries=3, codes=(408,), **kw):
+        req = urllib2.Request(url, **kw)
+        req.add_header('User-Agent', 'Allura Data Importer (http://sf.net/p/allura)')
+        return h.urlopen(req, retries=retries, codes=codes)
+
+
 class ProjectImporter(BaseController):
     """
     Base class for project importers.
diff --git a/ForgeImporters/forgeimporters/google/__init__.py b/ForgeImporters/forgeimporters/google/__init__.py
index a307bcd..a12389b 100644
--- a/ForgeImporters/forgeimporters/google/__init__.py
+++ b/ForgeImporters/forgeimporters/google/__init__.py
@@ -17,7 +17,6 @@
 
 import re
 import urllib
-import urllib2
 from urlparse import urlparse, urljoin
 from collections import defaultdict
 try:
@@ -29,11 +28,12 @@
 from BeautifulSoup import BeautifulSoup
 
 from allura import model as M
+from forgeimporters.base import ProjectExtractor
 
 
 log = logging.getLogger(__name__)
 
-class GoogleCodeProjectExtractor(object):
+class GoogleCodeProjectExtractor(ProjectExtractor):
     BASE_URL = 'http://code.google.com'
     RE_REPO_TYPE = re.compile(r'(svn|hg|git)')
 
@@ -82,7 +82,7 @@
         self.url = (self.get_page_url(page_name_or_url) if page_name_or_url in
                 self.PAGE_MAP else page_name_or_url)
         self.page = self._page_cache[page_name_or_url] = \
-                BeautifulSoup(urllib2.urlopen(self.url))
+                BeautifulSoup(self.urlopen(self.url))
         return self.page
 
     def get_page_url(self, page_name):
@@ -103,7 +103,7 @@
         if icon_url == self.DEFAULT_ICON:
             return
         icon_name = urllib.unquote(urlparse(icon_url).path).split('/')[-1]
-        fp_ish = urllib2.urlopen(icon_url)
+        fp_ish = self.urlopen(icon_url)
         fp = StringIO(fp_ish.read())
         M.ProjectFile.save_image(
             icon_name, fp,
diff --git a/ForgeImporters/forgeimporters/tests/google/test_extractor.py b/ForgeImporters/forgeimporters/tests/google/test_extractor.py
index b4e64c0..9b6db45 100644
--- a/ForgeImporters/forgeimporters/tests/google/test_extractor.py
+++ b/ForgeImporters/forgeimporters/tests/google/test_extractor.py
@@ -19,12 +19,13 @@
 
 import mock
 
-from ... import google
+from forgeimporters import google
+from forgeimporters import base
 
 
 class TestGoogleCodeProjectExtractor(TestCase):
     def setUp(self):
-        self._p_urlopen = mock.patch.object(google.urllib2, 'urlopen')
+        self._p_urlopen = mock.patch.object(base.ProjectExtractor, 'urlopen')
         self._p_soup = mock.patch.object(google, 'BeautifulSoup')
         self.urlopen = self._p_urlopen.start()
         self.soup = self._p_soup.start()
@@ -105,7 +106,7 @@
 
     def _make_extractor(self, html):
         from BeautifulSoup import BeautifulSoup
-        with mock.patch.object(google, 'urllib2'):
+        with mock.patch.object(base.ProjectExtractor, 'urlopen'):
             extractor = google.GoogleCodeProjectExtractor(self.project, 'my-project')
         extractor.page = BeautifulSoup(html)
         extractor.get_page = lambda pagename: extractor.page
diff --git a/ForgeImporters/forgeimporters/tests/test_base.py b/ForgeImporters/forgeimporters/tests/test_base.py
index 68be24d..57ed227 100644
--- a/ForgeImporters/forgeimporters/tests/test_base.py
+++ b/ForgeImporters/forgeimporters/tests/test_base.py
@@ -23,6 +23,19 @@
 from .. import base
 
 
+class TestProjectExtractor(TestCase):
+    @mock.patch('forgeimporters.base.h.urlopen')
+    @mock.patch('forgeimporters.base.urllib2.Request')
+    def test_urlopen(self, Request, urlopen):
+        r = base.ProjectExtractor.urlopen('myurl', data='foo')
+        Request.assert_called_once_with('myurl', data='foo')
+        req = Request.return_value
+        req.add_header.assert_called_once_with(
+                'User-Agent', 'Allura Data Importer (http://sf.net/p/allura)')
+        urlopen.assert_called_once_with(req, retries=3, codes=(408,))
+        self.assertEqual(r, urlopen.return_value)
+
+
 @mock.patch.object(base.ToolImporter, 'by_name')
 @mock.patch.object(base, 'c')
 def test_import_tool(c, by_name):
diff --git a/ForgeTracker/forgetracker/import_support.py b/ForgeTracker/forgetracker/import_support.py
index 04d453a..e22c50e 100644
--- a/ForgeTracker/forgetracker/import_support.py
+++ b/ForgeTracker/forgetracker/import_support.py
@@ -34,6 +34,12 @@
 # Local imports
 from forgetracker import model as TM
 
+try:
+    from forgeimporters.base import ProjectExtractor
+    urlopen = ProjectExtractor.urlopen
+except ImportError:
+    urlopen = h.urlopen
+
 log = logging.getLogger(__name__)
 
 class ImportException(Exception):
@@ -276,15 +282,13 @@
         comment.import_id = c.api_token.api_key
 
     def make_attachment(self, org_ticket_id, ticket_id, att_dict):
-        import urllib2
         if att_dict['size'] > self.ATTACHMENT_SIZE_LIMIT:
             self.errors.append('Ticket #%s: Attachment %s (@ %s) is too large, skipping' %
                                (org_ticket_id, att_dict['filename'], att_dict['url']))
             return
-        f = urllib2.urlopen(att_dict['url'])
+        f = urlopen(att_dict['url'])
         TM.TicketAttachment.save_attachment(att_dict['filename'], ResettableStream(f),
                                             artifact_id=ticket_id)
-        f.close()
 
 
     #
diff --git a/ForgeWiki/forgewiki/scripts/wiki_from_trac/extractors.py b/ForgeWiki/forgewiki/scripts/wiki_from_trac/extractors.py
index 7f111d7..af07f50 100644
--- a/ForgeWiki/forgewiki/scripts/wiki_from_trac/extractors.py
+++ b/ForgeWiki/forgewiki/scripts/wiki_from_trac/extractors.py
@@ -24,15 +24,18 @@
 from urlparse import urljoin, urlsplit
 
 try:
-    import requests
-except:
-    # Ignore this import if the requests package is not installed
-    pass
+    from forgeimporters.base import ProjectExtractor
+    urlopen = ProjectExtractor.urlopen
+except ImportError:
+    try:
+        from allura.lib.helpers import urlopen
+    except ImportError:
+        from urllib2 import urlopen
 
 try:
     # Ignore this import if the html2text package is not installed
     import html2text
-except:
+except ImportError:
     pass
 
 from BeautifulSoup import BeautifulSoup
@@ -128,8 +131,8 @@
         glue = '&' if '?' in suburl else '?'
         return  url + glue + 'format=' + type
 
-    def fetch(self, url, **kwargs):
-        return requests.get(url, **kwargs)
+    def fetch(self, url):
+        return urlopen(url)
 
     def page_list(self):
         url = urljoin(self.base_url, self.PAGE_LIST_URL)