bpo-32069: Drop legacy SSL transport (#4451)

* Drop legacy SSL transport

* Drop unused import

* Fix Windows tests

* Drop never executed on Python 3.4+ code

1 files changed, 4 insertions, 16 deletions

diff --git a/Lib/asyncio/sslproto.py b/Lib/asyncio/sslproto.py
index 53e6d2b667..c231eb58ee 100644
--- a/Lib/asyncio/sslproto.py
+++ b/Lib/asyncio/sslproto.py
@@ -18,25 +18,13 @@ def _create_transport_context(server_side, server_hostname):
     # Client side may pass ssl=True to use a default
     # context; in that case the sslcontext passed is None.
     # The default is secure for client connections.
-    if hasattr(ssl, 'create_default_context'):
-        # Python 3.4+: use up-to-date strong settings.
-        sslcontext = ssl.create_default_context()
-        if not server_hostname:
-            sslcontext.check_hostname = False
-    else:
-        # Fallback for Python 3.3.
-        sslcontext = ssl.SSLContext(ssl.PROTOCOL_SSLv23)
-        sslcontext.options |= ssl.OP_NO_SSLv2
-        sslcontext.options |= ssl.OP_NO_SSLv3
-        sslcontext.set_default_verify_paths()
-        sslcontext.verify_mode = ssl.CERT_REQUIRED
+    # Python 3.4+: use up-to-date strong settings.
+    sslcontext = ssl.create_default_context()
+    if not server_hostname:
+        sslcontext.check_hostname = False
     return sslcontext
 
 
-def _is_sslproto_available():
-    return hasattr(ssl, "MemoryBIO")
-
-
 # States of an _SSLPipe.
 _UNWRAPPED = "UNWRAPPED"
 _DO_HANDSHAKE = "DO_HANDSHAKE"