This contains a number of things:

1) Improve the documentation of the SSL module, with a fuller
   explanation of certificate usage, another reference, proper
   formatting of this and that.

2) Fix Windows bug in ssl.py, and general bug in sslsocket.close().
   Remove some unused code from ssl.py.  Allow accept() to be called on
   sslsocket sockets.

3) Use try-except-else in import of ssl in socket.py.  Deprecate use of
   socket.ssl().

4) Remove use of socket.ssl() in every library module, except for
   test_socket_ssl.py and test_ssl.py.

1 files changed, 28 insertions, 12 deletions

diff --git a/Lib/socket.py b/Lib/socket.py
index 48bb4f6..313151c 100644
--- a/Lib/socket.py
+++ b/Lib/socket.py
@@ -46,15 +46,37 @@ the setsockopt() and getsockopt() methods.
 import _socket
 from _socket import *
 
-_have_ssl = False
 try:
     import _ssl
-    from _ssl import *
-    _have_ssl = True
 except ImportError:
+    # no SSL support
     pass
-
-import os, sys
+else:
+    def ssl(sock, keyfile=None, certfile=None):
+        # we do an internal import here because the ssl
+        # module imports the socket module
+        import ssl as _realssl
+        warnings.warn("socket.ssl() is deprecated.  Use ssl.sslsocket() instead.",
+                      DeprecationWarning, stacklevel=2)
+        return _realssl.sslwrap_simple(sock, keyfile, certfile)
+
+    # we need to import the same constants we used to...
+    from _ssl import \
+         sslerror, \
+         RAND_add, \
+         RAND_egd, \
+         RAND_status, \
+         SSL_ERROR_ZERO_RETURN, \
+         SSL_ERROR_WANT_READ, \
+         SSL_ERROR_WANT_WRITE, \
+         SSL_ERROR_WANT_X509_LOOKUP, \
+         SSL_ERROR_SYSCALL, \
+         SSL_ERROR_SSL, \
+         SSL_ERROR_WANT_CONNECT, \
+         SSL_ERROR_EOF, \
+         SSL_ERROR_INVALID_ERROR_CODE
+
+import os, sys, warnings
 
 try:
     from errno import EBADF
@@ -63,15 +85,9 @@ except ImportError:
 
 __all__ = ["getfqdn"]
 __all__.extend(os._get_exports_list(_socket))
-if _have_ssl:
-    __all__.extend(os._get_exports_list(_ssl))
+
 
 _realsocket = socket
-if _have_ssl:
-    def ssl(sock, keyfile=None, certfile=None):
-        import ssl as realssl
-        return realssl.sslwrap_simple(sock, keyfile, certfile)
-    __all__.append("ssl")
 
 # WSA error codes
 if sys.platform.lower().startswith("win"):