Expose SSL_set_shutdown and SSL_get_shutdown on Connection
diff --git a/src/ssl/ssl.c b/src/ssl/ssl.c
index 9d3abd2..1bd2d9e 100644
--- a/src/ssl/ssl.c
+++ b/src/ssl/ssl.c
@@ -180,6 +180,10 @@
     PyModule_AddIntConstant(module, "OP_NETSCAPE_CA_DN_BUG", SSL_OP_NETSCAPE_CA_DN_BUG);
     PyModule_AddIntConstant(module, "OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG", SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
 
+	/* For SSL_set_shutdown */
+    PyModule_AddIntConstant(module, "SENT_SHUTDOWN", SSL_SENT_SHUTDOWN);
+    PyModule_AddIntConstant(module, "RECEIVED_SHUTDOWN", SSL_RECEIVED_SHUTDOWN);
+
     dict = PyModule_GetDict(module);
     if (!init_ssl_context(dict))
         goto error;