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bpo-42854: Use SSL_read/write_ex() (GH-25468)

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The ssl module now uses ``SSL_read_ex`` and ``SSL_write_ex``
internally. The functions support reading and writing of data larger
than 2 GB. Writing zero-length data no longer fails with a protocol
violation error.

Signed-off-by: Christian Heimes <christian@python.org>
This commit is contained in:
Christian Heimes 2021-04-19 06:55:30 +02:00 • committed by GitHub
parent 49fdf118ae
commit 89d1550d14
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4 changed files with 34 additions and 18 deletions
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11
Lib/test/test_ssl.py
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@ -1110,6 +1110,17 @@ class BasicSocketTests(unittest.TestCase):
)
self.assertIn(rc, errors)
def test_read_write_zero(self):
# empty reads and writes now work, bpo-42854, bpo-31711
client_context, server_context, hostname = testing_context()
server = ThreadedEchoServer(context=server_context)
with server:
with client_context.wrap_socket(socket.socket(),
server_hostname=hostname) as s:
s.connect((HOST, server.port))
self.assertEqual(s.recv(0), b"")
self.assertEqual(s.send(b""), 0)
class ContextTests(unittest.TestCase):