Issue #13635: Add ssl.OP_CIPHER_SERVER_PREFERENCE, so that SSL servers
choose the cipher based on their own preferences, rather than on the
client's.
diff --git a/Modules/_ssl.c b/Modules/_ssl.c
index 5772d90..0f3d2c1 100644
--- a/Modules/_ssl.c
+++ b/Modules/_ssl.c
@@ -2450,6 +2450,8 @@
     PyModule_AddIntConstant(m, "OP_NO_SSLv2", SSL_OP_NO_SSLv2);
     PyModule_AddIntConstant(m, "OP_NO_SSLv3", SSL_OP_NO_SSLv3);
     PyModule_AddIntConstant(m, "OP_NO_TLSv1", SSL_OP_NO_TLSv1);
+    PyModule_AddIntConstant(m, "OP_CIPHER_SERVER_PREFERENCE",
+                            SSL_OP_CIPHER_SERVER_PREFERENCE);
 
 #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
     r = Py_True;