[New-bugs-announce] [issue34391] test_ftplib is failing with TLS 1.3

[Christian Heimes]

New submission from Christian Heimes <lists at cheimes.de>:

Related to #32947

Four ftplib tests are failing with OpenSSL 1.1.1-pre8 and TLS 1.3 enabled. All failing tests use a separate data connection and transfer data on the server. For store operations, the client never calls recv(). This breaks bidirectional shutdown. I assume there are session tickets stuck on the wire.

======================================================================
ERROR: test_storbinary (test.test_ftplib.TestTLS_FTPClassMixin)
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Traceback (most recent call last):
  File "/home/heimes/dev/python/cpython/Lib/test/test_ftplib.py", line 591, in test_storbinary
    self.client.storbinary('stor', f)
  File "/home/heimes/dev/python/cpython/Lib/ftplib.py", line 514, in storbinary
    conn.unwrap()
  File "/home/heimes/dev/python/cpython/Lib/ssl.py", line 1091, in unwrap
    s = self._sslobj.shutdown()
OSError: [Errno 0] Error

======================================================================
ERROR: test_storbinary_rest (test.test_ftplib.TestTLS_FTPClassMixin)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/heimes/dev/python/cpython/Lib/test/test_ftplib.py", line 603, in test_storbinary_rest
    self.client.storbinary('stor', f, rest=r)
  File "/home/heimes/dev/python/cpython/Lib/ftplib.py", line 514, in storbinary
    conn.unwrap()
  File "/home/heimes/dev/python/cpython/Lib/ssl.py", line 1091, in unwrap
    s = self._sslobj.shutdown()
OSError: [Errno 0] Error

======================================================================
ERROR: test_storlines (test.test_ftplib.TestTLS_FTPClassMixin)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/heimes/dev/python/cpython/Lib/test/test_ftplib.py", line 608, in test_storlines
    self.client.storlines('stor', f)
  File "/home/heimes/dev/python/cpython/Lib/ftplib.py", line 545, in storlines
    conn.unwrap()
  File "/home/heimes/dev/python/cpython/Lib/ssl.py", line 1091, in unwrap
    s = self._sslobj.shutdown()
OSError: [Errno 0] Error

======================================================================
ERROR: test_data_connection (test.test_ftplib.TestTLS_FTPClass)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/heimes/dev/python/cpython/Lib/test/test_ftplib.py", line 889, in test_data_connection
    self.assertEqual(self.client.voidresp(), "226 transfer complete")
  File "/home/heimes/dev/python/cpython/Lib/ftplib.py", line 251, in voidresp
    resp = self.getresp()
  File "/home/heimes/dev/python/cpython/Lib/ftplib.py", line 236, in getresp
    resp = self.getmultiline()
  File "/home/heimes/dev/python/cpython/Lib/ftplib.py", line 222, in getmultiline
    line = self.getline()
  File "/home/heimes/dev/python/cpython/Lib/ftplib.py", line 204, in getline
    line = self.file.readline(self.maxline + 1)
  File "/home/heimes/dev/python/cpython/Lib/socket.py", line 589, in readinto
    return self._sock.recv_into(b)
socket.timeout: timed out

----------------------------------------------------------------------
Ran 88 tests in 9.402s

FAILED (errors=4, skipped=1)

----------
messages: 323472
nosy: christian.heimes
priority: normal
severity: normal
status: open
title: test_ftplib is failing with TLS 1.3

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue34391>
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