Fix Issue10119 - test_urllibnet failure when using support.transient_internet.

Lib/test/test_urllibnet.py

@@ -11,21 +11,6 @@ import email.message
 import time
 
 
-def _open_with_retry(func, host, *args, **kwargs):
-    # Connecting to remote hosts is flaky.  Make it more robust
-    # by retrying the connection several times.
-    last_exc = None
-    for i in range(3):
-        try:
-            return func(host, *args, **kwargs)
-        except IOError as err:
-            last_exc = err
-            continue
-        except:
-            raise
-    raise last_exc
-
-
 class URLTimeoutTest(unittest.TestCase):
 
     TIMEOUT = 10.0
@@ -37,7 +22,8 @@ class URLTimeoutTest(unittest.TestCase):
         socket.setdefaulttimeout(None)
 
     def testURLread(self):
-        f = _open_with_retry(urllib.request.urlopen, "http://www.python.org/")
+        with support.transient_internet("www.python.org"):
+            f = urllib.request.urlopen("http://www.python.org/")
         x = f.read()
 
 class urlopenNetworkTests(unittest.TestCase):
@@ -55,8 +41,10 @@ class urlopenNetworkTests(unittest.TestCase):
 
     """
 
-    def urlopen(self, *args):
-        return _open_with_retry(urllib.request.urlopen, *args)
+    def urlopen(self, *args, **kwargs):
+        resource = args[0]
+        with support.transient_internet(resource):
+            return urllib.request.urlopen(*args, **kwargs)
 
     def test_basic(self):
         # Simple test expected to pass.
@@ -119,7 +107,7 @@ class urlopenNetworkTests(unittest.TestCase):
             # test can't pass on Windows.
             return
         # Make sure fd returned by fileno is valid.
-        open_url = self.urlopen("http://www.python.org/")
+        open_url = self.urlopen("http://www.python.org/", timeout=None)
         fd = open_url.fileno()
         FILE = os.fdopen(fd, encoding='utf-8')
         try:
@@ -146,7 +134,9 @@ class urlretrieveNetworkTests(unittest.TestCase):
     """Tests urllib.request.urlretrieve using the network."""
 
     def urlretrieve(self, *args):
-        return _open_with_retry(urllib.request.urlretrieve, *args)
+        resource = args[0]
+        with support.transient_internet(resource):
+            return urllib.request.urlretrieve(*args)
 
     def test_basic(self):
         # Test basic functionality.