Fixup from test_ssl test_default_ecdh_curve (GH-11877)

Partial backport from cb5b68abdeb1b1d56c581d5b4d647018703d61e3

Co-authored-by: Christian Heimes <christian@python.org>

diff --git a/Lib/test/test_ssl.py b/Lib/test/test_ssl.py
index 00c83023f0b1bb2d54b7c2d2951c50b1bd60c5f5..01e543241cfd64a19df2c89c2c22f3f8a464ce4f 100644 (file)
--- a/Lib/test/test_ssl.py
+++ b/Lib/test/test_ssl.py
@@ -2860,6 +2860,9 @@ else:
             # should be enabled by default on SSL contexts.
             context = ssl.SSLContext(ssl.PROTOCOL_SSLv23)
             context.load_cert_chain(CERTFILE)
+            # TLSv1.3 defaults to PFS key agreement and no longer has KEA in
+            # cipher name.
+            context.options |= ssl.OP_NO_TLSv1_3
             # Prior to OpenSSL 1.0.0, ECDH ciphers have to be enabled
             # explicitly using the 'ECCdraft' cipher alias.  Otherwise,
             # our default cipher list should prefer ECDH-based ciphers