ssl.SSLWantReadError in version 3.3.0

Version: 3.3.0

Platform: Python3.7 aws Lambda and Python 3.6 Ubuntu 18.04

Description:

Hello

We upgraded today version to the last one - 3.3.0 from 3.2.1. When we did that we started to get ssl error.

reverting version to 3.2.1 fix the issue…

code:

from redis import StrictRedis
cache = StrictRedis(
    host=SESSION_CACHE_HOST,
    db=int(SESSION_CACHE_DB),
    password=SESSION_CACHE_PASS,
    ssl=True)
print(cache.keys())

traceback:

Traceback (most recent call last):
...
 File "/var/task/redis/client.py", line 1307, in exists
 return self.execute_command('EXISTS', *names)
 File "/var/task/redis/client.py", line 836, in execute_command
 conn = self.connection or pool.get_connection(command_name, **options)
 File "/var/task/redis/connection.py", line 1049, in get_connection
 if connection.can_read():
 File "/var/task/redis/connection.py", line 666, in can_read
 return self._parser.can_read(timeout)
 File "/var/task/redis/connection.py", line 280, in can_read
 return self._buffer and self._buffer.can_read(timeout)
 File "/var/task/redis/connection.py", line 190, in can_read
 raise_on_timeout=False)
 File "/var/task/redis/connection.py", line 159, in _read_from_socket
 data = recv(self._sock, socket_read_size)
 File "/var/task/redis/_compat.py", line 58, in recv
 return sock.recv(*args, **kwargs)
 File "/var/lang/lib/python3.7/ssl.py", line 1037, in recv
 return self.read(buflen)
 File "/var/lang/lib/python3.7/ssl.py", line 913, in read
 return self._sslobj.read(len)
ssl.SSLWantReadError: The operation did not complete (read) (_ssl.c:2488)

[andymccurdy]

@jzillioux Thanks. I’m looking into this now. I have an assumption and need to setup an SSL connection to test.

[andymccurdy]

FYI I just released redis-py 3.3.4. This version supports all versions of Python 2.7 and also checks to ensure that nonblocking socket reads behave correctly.

3.3.1, 3.3.2 and 3.3.3 could potentially fail to report a real socket error.