green urlopen was blocking on https

fixes #457

eventlet/green/http/client.py

@@ -1443,7 +1443,7 @@ def getresponse(self):
             raise
 
 try:
-    import ssl
+    from eventlet.green import ssl
 except ImportError:
     pass
 else:

tests/green_http_test.py

@@ -1,6 +1,13 @@
-import eventlet
+import sys
+
 import six
+from nose.plugins.skip import SkipTest
+
+import eventlet
+import eventlet.debug
 import tests
+from eventlet.green.urllib.request import urlopen
+from tests import tool_server
 
 __test__ = six.PY3
 
@@ -22,3 +29,23 @@ def test_http_request_encode_chunked_kwarg():
     addr = server_sock.getsockname()
     h = client.HTTPConnection(host=addr[0], port=addr[1])
     h.request('GET', '/', encode_chunked=True)
+
+
+def test_urlopen_http_concurrent():
+    if sys.version_info < (3,):
+        raise SkipTest()
+    eventlet.debug.hub_blocking_detection(True)
+    with tool_server.http_server_const() as url:
+        r = urlopen(url, timeout=1)
+        assert r.status == 200
+    eventlet.debug.hub_blocking_detection(False)
+
+
+def test_urlopen_https_concurrent():
+    if sys.version_info < (3,):
+        raise SkipTest()
+    eventlet.debug.hub_blocking_detection(True)
+    with tool_server.http_server_const(tls=True) as url:
+        r = urlopen(url, timeout=1, cafile=tool_server.CA_CERTS)
+        assert r.status == 200
+    eventlet.debug.hub_blocking_detection(False)