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bpo-34391: Fix ftplib test for TLS 1.3 (GH-8787)

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Read from data socket to avoid "[SSL] shutdown while in init" exception
during shutdown of the dummy server.

Signed-off-by: Christian Heimes <christian@python.org>


<!-- issue-number: [bpo-34391](https://www.bugs.python.org/issue34391) -->
https://bugs.python.org/issue34391
<!-- /issue-number -->
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Christian Heimes 2018-08-16 19:43:44 +02:00 • committed by GitHub
parent e6a4755e67
commit 1590c39336
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5
Lib/test/test_ftplib.py
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@ -880,18 +880,23 @@ class TestTLS_FTPClass(TestCase):
# clear text
with self.client.transfercmd('list') as sock:
self.assertNotIsInstance(sock, ssl.SSLSocket)
self.assertEqual(sock.recv(1024), LIST_DATA.encode('ascii'))
self.assertEqual(self.client.voidresp(), "226 transfer complete")
# secured, after PROT P
self.client.prot_p()
with self.client.transfercmd('list') as sock:
self.assertIsInstance(sock, ssl.SSLSocket)
# consume from SSL socket to finalize handshake and avoid
# "SSLError [SSL] shutdown while in init"
self.assertEqual(sock.recv(1024), LIST_DATA.encode('ascii'))
self.assertEqual(self.client.voidresp(), "226 transfer complete")
# PROT C is issued, the connection must be in cleartext again
self.client.prot_c()
with self.client.transfercmd('list') as sock:
self.assertNotIsInstance(sock, ssl.SSLSocket)
self.assertEqual(sock.recv(1024), LIST_DATA.encode('ascii'))
self.assertEqual(self.client.voidresp(), "226 transfer complete")
def test_login(self):