fix issue #8807: adds a context parameter to POP3_SSL class.
diff --git a/Lib/poplib.py b/Lib/poplib.py
index 1a529d0..84ea88d 100644
--- a/Lib/poplib.py
+++ b/Lib/poplib.py
@@ -331,16 +331,26 @@
         See the methods of the parent class POP3 for more documentation.
         """
 
-        def __init__(self, host, port=POP3_SSL_PORT,
-        keyfile=None, certfile=None,
-        timeout=socket._GLOBAL_DEFAULT_TIMEOUT):
+        def __init__(self, host, port=POP3_SSL_PORT, keyfile=None, certfile=None,
+                     timeout=socket._GLOBAL_DEFAULT_TIMEOUT, context=None):
+            if context is not None and keyfile is not None:
+                raise ValueError("context and keyfile arguments are mutually "
+                                 "exclusive")
+            if context is not None and certfile is not None:
+                raise ValueError("context and certfile arguments are mutually "
+                                 "exclusive")
             self.keyfile = keyfile
             self.certfile = certfile
+            self.context = context
             POP3.__init__(self, host, port, timeout)
 
         def _create_socket(self, timeout):
             sock = POP3._create_socket(self, timeout)
-            return ssl.wrap_socket(sock, self.keyfile, self.certfile)
+            if self.context is not None:
+                sock = self.context.wrap_socket(sock)
+            else:
+                sock = ssl.wrap_socket(sock, self.keyfile, self.certfile)
+            return sock
 
     __all__.append("POP3_SSL")
 
diff --git a/Lib/test/test_poplib.py b/Lib/test/test_poplib.py
index c831fb4..2adc849 100644
--- a/Lib/test/test_poplib.py
+++ b/Lib/test/test_poplib.py
@@ -122,6 +122,7 @@
         self.active = False
         self.active_lock = threading.Lock()
         self.host, self.port = self.socket.getsockname()[:2]
+        self.handler_instance = None
 
     def start(self):
         assert not self.active
@@ -145,8 +146,7 @@
 
     def handle_accept(self):
         conn, addr = self.accept()
-        self.handler = self.handler(conn)
-        self.close()
+        self.handler_instance = self.handler(conn)
 
     def handle_connect(self):
         self.close()
@@ -287,6 +287,23 @@
         def test__all__(self):
             self.assertIn('POP3_SSL', poplib.__all__)
 
+        def test_context(self):
+            ctx = ssl.SSLContext(ssl.PROTOCOL_TLSv1)
+            self.assertRaises(ValueError, poplib.POP3_SSL, self.server.host,
+                              self.server.port, keyfile=CERTFILE, context=ctx)
+            self.assertRaises(ValueError, poplib.POP3_SSL, self.server.host,
+                              self.server.port, certfile=CERTFILE, context=ctx)
+            self.assertRaises(ValueError, poplib.POP3_SSL, self.server.host,
+                              self.server.port, keyfile=CERTFILE,
+                              certfile=CERTFILE, context=ctx)
+
+            self.client.quit()
+            self.client = poplib.POP3_SSL(self.server.host, self.server.port,
+                                          context=ctx)
+            self.assertIsInstance(self.client.sock, ssl.SSLSocket)
+            self.assertIs(self.client.sock.context, ctx)
+            self.assertTrue(self.client.noop().startswith(b'+OK'))
+
 
 class TestTimeouts(TestCase):